CN102779529B - Read head sensor, magnetic head, magnetic head fold piece combination and hard disk drive - Google Patents
Read head sensor, magnetic head, magnetic head fold piece combination and hard disk drive Download PDFInfo
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Abstract
The invention discloses a kind of read head sensor, it includes the first screen layer, secondary shielding layer, the reading component being formed between described first screen layer and described secondary shielding layer and is respectively placed in the magnetic layer on described reading component both sides for a pair；Wherein, also including the magnetic field generation device being formed at the side of described reading component, described magnetic field generation device is for being perpendicular to described first screen layer and the magnetic field of described secondary shielding layer to the offer of described reading component, thus stablizes the reading performance of described read head sensor.The read head sensor of the present invention can be stablized reading performance, improve unstable defect reading component, and reduces waste and reduce manufacturing cost.The invention also discloses a kind of magnetic head, magnetic head fold piece combination and disc driver.
Description
Technical field
The present invention relates to information recording disk driver element, particularly relate to a kind of read head sensor, magnetic head, magnetic head fold piece combination (headgimbalassembly, HGA) and hard disk drive.
Background technology
The hard disk drive comprising multiple spinning disk is commonly used in the magnetic media storing data in its magnetic disk surface, and the removable magnetic head comprising read transducer is used as to read data from the track of magnetic disk surface.
Fig. 1 a illustrates the axonometric chart of a kind of traditional read head sensor 600, and Fig. 1 b is the schematic diagram of the read head sensor 600 looked in the air bearing face (airbearingsurface, ABS) from head-slider.As seen in figure la and lb, this read head sensor 600 includes the reading component 650 that the first screen layer 601, secondary shielding layer 602, layer are sandwiched between this first, second screen layer 601,602, and is positioned over a pair magnetic layer 603 of these reading component 650 both sides.
Usually, this magnetic layer 603 provides a longitudinally bias magnetic field to reading component 650, and in order to stablize reading component 650 to a certain extent, its magnetic direction 11 is parallel to ABS.Normally, to reading component 650 apply one from magnetizing mediums, such as the external signal field of disc driver, the magnetic direction 10 of this signal field is perpendicular to ABS.Known to all, the free layer in reading component 650 has shape anisotropy effect, and its direction of magnetization can rotate with the change of external magnetic field, and therefore, the direction of magnetization can optionally change.Therefore, this kind have fixed-direction longitudinal direction bias magnetic field can stablize free layer to a certain extent.
But, due to change and the impact of other inner member of external environment condition, this kind of read head sensor is the most unstable, affects the reading performance of magnetic head.If too much noise occur in the stability of magnetic head is tested and significantly quivering, the magnetic head with this read head sensor then can be rejected.Therefore, this magnetic head is abandoned as bad product, thus causes waste and make manufacturing cost increase.
It would therefore be highly desirable to the read head sensor for magnetic head of a kind of improvement is to overcome drawbacks described above.
Summary of the invention
It is an object of the present invention to provide a kind of read head sensor, it can be stablized reading performance, improve unstable defect reading component, and reduces waste and reduce manufacturing cost.
Further object is that a kind of magnetic head with read head sensor of offer, it can be stablized reading performance, improve unstable defect reading component, and reduces waste and reduce manufacturing cost.
It is yet a further object of the present invention to provide a kind of magnetic head fold piece combination with read head sensor, it can be stablized reading performance, improve unstable defect reading component, and reduces waste and reduce manufacturing cost.
A further object of the present invention is to provide a kind of disc driver with read head sensor, and it can be stablized reading performance, improve unstable defect reading component, and reduces waste and reduce manufacturing cost.
For reaching object above, the present invention provides a kind of read head sensor, including the first screen layer, secondary shielding layer, the reading component being formed between described first screen layer and described secondary shielding layer and the magnetic layer being respectively placed in described reading component both sides for a pair；Wherein, also including the magnetic field generation device being formed at the side of described reading component, described magnetic field generation device is for being perpendicular to described first screen layer and the magnetic field of described secondary shielding layer to the offer of described reading component, thus stablizes the reading performance of described read head sensor.
It is preferred that described reading component includes for rear surface, top surface and the basal surface relative with described top surface that the front surface forming air bearing face is relative with described front surface.
As a preferred embodiment, described magnetic field generation device is formed at described top surface and/or the side of described basal surface, and layer is sandwiched between described first screen layer and described secondary shielding layer.
As another preferred embodiment, described magnetic field generation device is formed at the side of described rear surface, and layer is sandwiched between described first screen layer and described secondary shielding layer.
It is preferred that described magnetic field generation device is formed on described first screen layer and/or described secondary shielding layer.
As further embodiment, described magnetic field generation device includes at least one permanent magnet, it is preferred that the coercivity of described permanent magnet is different from the coercivity of described magnetic layer.
As another preferred embodiment, described magnetic field generation device includes at least one electromagnet.
Alternatively, described magnetic field generation device includes at least one electric wire.
The magnetic head of the present invention includes read head sensor and is formed at the writing head on described read head sensor；Described read head sensor includes: the first screen layer, secondary shielding layer, the reading component being formed between described first screen layer and described secondary shielding layer and be respectively placed in the magnetic layer on described reading component both sides for a pair.Wherein, described read head sensor also includes the magnetic field generation device being formed at the side of described reading component, described magnetic field generation device is for being perpendicular to described first screen layer and the magnetic field of described secondary shielding layer to the offer of described reading component, thus stablizes the reading performance of described read head sensor.
The magnetic head fold piece combination of the present invention includes the head-slider with magnetic head and for supporting the cantilever part of described head-slider；Described magnetic head includes read head sensor and is formed at the writing head on described read head sensor；Described read head sensor includes the first screen layer, secondary shielding layer, the reading component being formed between described first screen layer and described secondary shielding layer and is respectively placed in the magnetic layer on described reading component both sides for a pair.Wherein, described read head sensor also includes the magnetic field generation device being formed at the side of described reading component, described magnetic field generation device is for being perpendicular to described first screen layer and the magnetic field of described secondary shielding layer to the offer of described reading component, thus stablizes the reading performance of described read head sensor.
The hard disk drive of the present invention, drives arm, rotatable disk and for rotating the spindle motor of described disk including what the magnetic head fold piece combination with head-slider was connected with described magnetic head fold piece combination；Described head-slider has read head sensor, and described read head sensor includes the first screen layer, secondary shielding layer, the reading component being formed between described first screen layer and described secondary shielding layer and is respectively placed in the magnetic layer on described reading component both sides for a pair.Wherein, described read head sensor also includes the magnetic field generation device being formed at the side of described reading component, described magnetic field generation device is for being perpendicular to described first screen layer and the magnetic field of described secondary shielding layer to the offer of described reading component, thus stablizes the reading performance of described read head sensor.
Compared with the read head sensor of prior art, the read head sensor of the present invention arranges magnetic field generation device at reading component side, it applies to be perpendicular to the magnetic field of first, second screen layer to reading component, secondary shielding layer can be pointed to from the first screen layer in the direction in this magnetic field, or points to the first screen layer from secondary shielding layer.This kind of bias magnetic field that the present invention applies can stablize reading component, finally stablizes the reading performance of read head sensor.Again and, unstable defective reading component can be improved as stable read head sensor by the present invention, thus reduces waste and reduce production cost.
By description below and combine accompanying drawing, the present invention will become more fully apparent, and these accompanying drawings are used for explaining embodiments of the invention.
Accompanying drawing explanation
Fig. 1 a is the partial perspective view of the simplification of traditional read head sensor.
Fig. 1 b is the read head sensor shown in Fig. 1 a, the schematic diagram as viewed from the ABS of head-slider.
Fig. 2 is the sectional view of an embodiment of the head-slider with magnetic head of the present invention.
Fig. 3 a is the partial perspective view of the simplification of the first embodiment of the read head sensor of the present invention.
Fig. 3 b is the partial perspective view of the simplification of the second embodiment of the read head sensor of the present invention.
Fig. 4 a is the partial perspective view of the simplification of the 3rd embodiment of the read head sensor of the present invention.
Fig. 4 b is the partial perspective view of the simplification of the 4th embodiment of the read head sensor of the present invention.
Fig. 5 is the partial perspective view of the simplification of the 5th embodiment of the read head sensor of the present invention.
Fig. 6 is the partial perspective view of the simplification of the sixth embodiment of the read head sensor of the present invention.
Fig. 7 is the partial perspective view of the simplification of the 7th embodiment of the read head sensor of the present invention.
Fig. 8 is the partial perspective view of the simplification of the 8th embodiment of the read head sensor of the present invention.
Fig. 9 is the partial perspective view of the simplification of the 9th embodiment of the read head sensor of the present invention.
Figure 10 is the top view of an embodiment of magnetic head fold piece combination of the present invention.
Figure 11 is the axonometric chart of an embodiment of hard disk drive of the present invention.
Detailed description of the invention
Illustrating the several different most preferred embodiment of the present invention below with reference to the accompanying drawings, wherein in different figures, identical label represents identical parts.As mentioned above, a kind of read head sensor of offer is provided, this this read head sensor has the magnetic field generation device being formed at reading component side, it provides the magnetic field being perpendicular to first, second screen layer to reading component, thus stablize the reading performance of reading component, improve unstable reading component, and reduce waste and reduce manufacturing cost.
Some embodiments of the read head sensor of the magnetic head of HGA in hard disk drive explained below.It should be noted that this read head sensor is applicable to arbitrary suitable HGA and/or the hard disk drive with the read head sensor with above advantage.That is, present invention can apply to any industrial arbitrary suitable devices with read head sensor.
The magnetic head being traditionally used for head-slider generally comprises the read head for reading data from disk and the writing head to disk write data.Read head is generally made up of a read head sensor, such as, have current-perpendicular-to-the-plane type (CPP) sensor, electric current planar type (CIP) sensor, tunnel magnetoresistive (TMR) sensor, giant magnetoresistance (GMR) sensor or anisotropy (AMR) sensor etc..For ease of understanding, the present invention using as a example by CPP-TMR sensor as description.Obviously, those skilled in the art are after reading this specification, it is to be understood that the present invention is being applied to the situation of other sensors.The preferred embodiment of the magnetic head with read head sensor of the present invention will be described below.
Fig. 2 is the sectional view of an embodiment of head-slider 60 of the present invention.The one side of this head-slider 60 is ground and forms ABS15, this ABS15 by air bearing from disk 10 (with reference to Figure 10) spaced apart from surfaces rotated.This head-slider 60 includes substrate 214 and is formed at the magnetic head 200 on this substrate 214, in order to read and write data.Specifically, this magnetic head 200 includes read head sensor 210 and the writing head 220 being formed on read head sensor 210.This read head sensor 210 includes the first screen layer 211, the secondary shielding layer 212 being formed on substrate 214, and layer is clipped in the reading component 250 between this first screen layer 211 and secondary shielding layer 212.Writing head 220 includes that first write pole the 221, second write pole 222 and layer are clipped in the coil 223 between this two write pole 221,222 and insulating barrier 224.The surface of said elements, i.e. towards on the surface of ABS15, is coated with a protective layer 205, with the erosion preventing or reducing magnetic head to be subject to.Clearance layer 225 is formed between secondary shielding layer 212 and first write pole 221 of read head sensor 210.
When carrying out write operation, signal code is conducted by coil 223, and in first and second write pole 221, produces magnetic flux so that magnetic flux flows round pole tip on ABS15 on 222.This kind of magnetic flux makes to be magnetized by the annular track of spinning disk 10 when carrying out write operation.When carrying out read operation, magnetic flux is injected in read head sensor 210 by the region that spinning disk 10 is magnetized so that the resistance of read head sensor 210 changes.Changing of this kind of resistance is changed by the voltage of read head sensor 210 and detects.
Fig. 3 a is the axonometric chart of the simplification of the first embodiment of the read head sensor 210 of the present invention.In conjunction with Fig. 2, this read head sensor 210 also includes including a pair magnetic layer 238 being positioned over reading component 250 both sides, in order to the magnetic of the longitudinally free layer of bias reading component 250.This magnetic layer 238 is made up of the material such as CoPtCr alloy with high-coercivity.Specifically, this magnetic layer 238 has a magnetic direction 258, this magnetic direction 258 towards being roughly parallel to first, second screen layer 211,212 and being 0 degree of angle with ABS15.
Under the design of the present invention, this read head sensor 210 also includes the magnetic field generation device being formed at reading component 250 side, in order to stable reading component 250.In the present embodiment, this magnetic field generation device includes two permanent magnets 241,242.As shown in Figure 3 a, this reading component 250 has and forms front surface 251 rear surface 252 relative with this front surface 251 of ABS15, top surface 253 and the basal surface (figure do not indicate) relative with this top surface.Specifically, these two permanent magnets 241,242 are respectively formed in the side of top surface 253 and basal surface, and layer is sandwiched between the first screen layer 211 and secondary shielding layer 212.More specifically, the line of two magnetic poles of each permanent magnet 241,242 is perpendicular to the first shielding 211 and secondary shielding layer 212.This permanent magnet 241,242 applies to pass perpendicularly through top surface 253 to reading component 250, is i.e. perpendicular to the first screen layer 211 and the bias magnetic field of secondary shielding layer 212 (hand designations is 248).
Alternatively, the direction 248 includes two kinds of situations: point to secondary shielding layer 212 from the first screen layer 211；The first screen layer 211 is pointed to from secondary shielding layer 212.Both directions can be at phase co-conversion under external action.In the present embodiment, the direction 248 is initially from the first shielding 211 sensing secondary shielding layer 212.
Through substantial amounts of test, inventor finds that the good magnetic head with this kind of read head element is insensitive to the bias magnetic field of the direction 248 (being i.e. perpendicular to first, second screen layer 211,212), does not have strong response.But, one at high temperature uses the defect magnetic head producing much noise, then has significantly response for having the bias magnetic field of the direction 248.Specifically, for the reading sensor of the defect of reading performance instability, when permanent magnet 241,242 is carried out peripheral operation, magnetic direction 248 is made to change.After change, this permanent magnet 241,242 applies to be perpendicular to first, second screen layer 211,212 to reading component 250, and points to the bias magnetic field of the first screen layer 211 from secondary shielding layer 212.There is the magnetic field with the direction of magnetization the most in opposite direction and can stablize the reading performance of reading component 250.Embodying as one, the output of this reading sensor 210 is stable, the most significantly quivers in curve of output.Therefore, the sensor that reads of this defect is improved as good reading sensor.
Otherwise, if the inceptive direction of the bias magnetic field reading sensor of defect is for point to the first screen layer 211 from secondary shielding layer 212, the direction can be converted into points to secondary shielding layer 212 from the first screen layer 211, thus stablizes reading component, and then stablizes reading performance.Embodying as one, the output of this reading sensor 210 is stable, the most significantly quivers in curve of output.Therefore, the sensor that reads of this defect is improved as good reading sensor.
In sum, owing to permanent magnet 241,242 is formed at reading component 250 side, and applying to be perpendicular to the magnetic field of first, second screen layer 211,212 to it, this magnetic direction can point to secondary shielding layer 212 from the first screen layer 211, or point to the first screen layer 211 from secondary shielding layer 212.This kind of bias magnetic field that the present invention applies can stablize reading component 250, finally stablizes the reading performance of read head sensor 210.Again and, unstable defective read head sensor can be improved as good read head sensor by the present invention, thus reduces waste and reduce production cost.
It is preferred that the coercivity of this permanent magnet 241,242 is different with the coercivity of magnetic layer 238, thus the change of the magnetic direction of easily controllable permanent magnet 241,242.
Alternatively, the number of this permanent magnet can be one, equally improves the stability of reading component.
Alternatively, as shown in Figure 3 b, this permanent magnet 241,242 can be placed on first, second screen layer 211,212, and it equally stablizes reading component 250.
As a preferred embodiment, as shown in fig. 4 a, permanent magnet 241,242 can be replaced by two electromagnets 261,262.The position of this electromagnet 261,262 is arranged as permanent magnet 241,242, omits at this and describes.Similarly, the bias magnetic field that this electromagnet 261,262 provides has the direction 268 being perpendicular to first, second screen layer 211,212.In the present embodiment, intensity and the direction in this magnetic field can be adjusted by putting on the electric current 263 on coil 264.
Alternatively, the number of this electromagnet can be one, equally improves the stability of reading component.
Alternatively, as shown in Figure 4 b, this electromagnet 261,262 can be placed on first, second screen layer 211,212, and it equally stablizes reading component 250.
Fig. 5 illustrates the 5th embodiment of the read head sensor of the present invention.This magnetic field generation device includes a permanent magnet 271, and it is arranged at the side of rear surface 252 of reading component 250, i.e. in the side away from ABS15.Similarly, this permanent magnet 271 layers is sandwiched between the first screen layer 211 and secondary shielding layer 212.As in the first embodiment, this permanent magnet 271 applies to be perpendicular to first, second screen layer 211,212 (direction 278) to reading component 250, i.e. passes perpendicularly through the bias magnetic field of the top surface 253 of reading component 250.
Fig. 6 illustrates the sixth embodiment of the read head sensor of the present invention.This embodiment is similar with the 5th embodiment, and difference is: electromagnet 281 instead of permanent magnet 271.Similarly, the bias magnetic field that this electromagnet 281 provides has the direction 288 being perpendicular to first, second screen layer 211,212.In the present embodiment, intensity and the direction in this magnetic field can be adjusted by putting on the electric current 283 on coil 284.
Alternatively, as it is shown in fig. 7, permanent magnet 271 can be by electric wire 291 replacement.This electric wire 291 is arranged on the side of the rear surface 252 of reading component 250.When applying the variable-current with direction 292 to this electric wire 291, the magnetic field (i.e. direction 298) passing perpendicularly through top surface 251 can be produced.Specifically, this sense of current 292 applies along the length direction of magnetic layer 238.
Based on first embodiment, Fig. 8 illustrates another design improved.In the present embodiment, two permanent magnets 241 ', 242 ' are arranged on the side of reading component 250.Difference is, this permanent magnet 241 ', 242 ' is arranged on the side of the rear surface 252 of reading component 250, and lays respectively on top surface 253 and basal surface.This two permanent magnet 241 ', 242 ' is parallel to each other, and is parallel to first, second screen layer 211,212.Arranging based on this, the bias magnetic field that permanent magnet 241 ', 242 ' provides has the direction 248 ' being perpendicular to first, second screen layer 211,212.Similarly, the present embodiment can include the technical characteristic similar to first embodiment, therefore omits identical description.
As an optional embodiment, as it is shown in figure 9, this permanent magnet 241 ', 242 ' can be by two electromagnets 241 ", 242 " replace, reading component 250 can be stablized equally.Similarly, this electromagnet 241 ", 242 " bias magnetic field that provides has the direction 248 being perpendicular to first, second screen layer 211,212 ".And, the intensity in this magnetic field and direction can be by putting on coil 284 " on electric current 283 " be adjusted.
Above-mentioned all embodiments all can apply to be perpendicular to the magnetic field of first, second screen layer 211,212 to reading component 250, and this magnetic direction can point to secondary shielding layer 212 from the first screen layer 211, or point to the first screen layer 211 from secondary shielding layer 212.This kind of bias magnetic field that the present invention applies can stablize reading component 250, finally stablizes the reading performance of read head sensor 210.Again and, unstable defective read head sensor can be improved as good read head sensor by the present invention, thus reduces waste and reduce production cost.
Figure 10 illustrates the embodiment of magnetic head fold piece combination 20 that the present invention has the head-slider 60 of above-mentioned band read head sensor 210.As it can be seen, this magnetic head fold piece combination 20 generally comprises said head slide block 60 and supports the cantilever part 810 of this head-slider 60.This cantilever part 810 includes substrate 802, articulated part 807, flexible element 803 and load beam 804, and above element is all assembled together.Articulated part 807 is by self assembling with substrate 802.Head-slider 60 is supported by flexible element 803.Owing to the structure of cantilever part and the assembling process of magnetic head fold piece combination are known to persons skilled in the art, so omitting about its structure and the detailed description of assembling at this.
Figure 11 illustrates an embodiment of the hard disk drive that the present invention comprises said head slide block 60 and magnetic head fold piece combination 20.This hard disk drive 100 includes spindle motor 30, a series of rotatable disc 10 being installed on this spindle motor 30, magnetic head fold piece combination 20, the driving arm 50 being connected with this magnetic head fold piece combination 20, is arranged at this driving arm 50 far-end and includes the head-slider 60 of read head sensor 210 (see Fig. 2) of the present invention, and by said elements assembling housing 70 together.As well known to the skilled person, when hard disk drive 100 operates, disk 10 is driven rotation by spindle motor 30, and consequent air pressure can make head-slider 60 fly above disk 10, and then makes the read head sensor 210 on head-slider 60 access data in disc tracks.
The above disclosed presently preferred embodiments of the present invention that is only, certainly can not limit the interest field of the present invention, the equivalent variations therefore made according to scope of the present invention patent with this, still belong to the scope that the present invention is contained.
Claims (20)
1. a read head sensor, including the first screen layer, secondary shielding layer, the reading component being formed between described first screen layer and described secondary shielding layer and be respectively placed in described reading component both sides and the magnetic layer between described first screen layer and described secondary shielding layer for a pair；
It is characterized in that: also include being formed at the magnetic field generation device of the side of described reading component, described magnetic field generation device is for being perpendicular to described first screen layer and the magnetic field of described secondary shielding layer to the offer of described reading component, thus stablizes the reading performance of described read head sensor.
2. read head sensor as claimed in claim 1, it is characterised in that: described reading component includes for rear surface, top surface and the basal surface relative with described top surface that the front surface forming air bearing face is relative with described front surface.
3. read head sensor as claimed in claim 2, it is characterised in that: described magnetic field generation device is formed at described top surface and/or the side of described basal surface, and layer is sandwiched between described first screen layer and described secondary shielding layer.
4. read head sensor as claimed in claim 2, it is characterised in that: described magnetic field generation device is formed at the side of described rear surface, and layer is sandwiched between described first screen layer and described secondary shielding layer.
5. read head sensor as claimed in claim 1, it is characterised in that: described magnetic field generation device is formed on described first screen layer and/or described secondary shielding layer.
6. read head sensor as claimed in claim 1, it is characterised in that: described magnetic field generation device includes at least one permanent magnet.
7. read head sensor as claimed in claim 1, it is characterised in that: described magnetic field generation device includes at least one electromagnet.
8. read head sensor as claimed in claim 1, it is characterised in that: described magnetic field generation device includes at least one electric wire.
9. read head sensor as claimed in claim 6, it is characterised in that: the coercivity of described permanent magnet is different from the coercivity of described magnetic layer.
10. a magnetic head, including read head sensor and be formed at the writing head on described read head sensor；Described read head sensor includes: the first screen layer, secondary shielding layer, the reading component being formed between described first screen layer and described secondary shielding layer and be respectively placed in described reading component both sides and the magnetic layer between described first screen layer and described secondary shielding layer for a pair；
It is characterized in that: described read head sensor also includes being formed at the magnetic field generation device of the side of described reading component, described magnetic field generation device is for being perpendicular to described first screen layer and the magnetic field of described secondary shielding layer to the offer of described reading component, thus stablizes the reading performance of described read head sensor.
11. magnetic heads as claimed in claim 10, it is characterised in that: described reading component includes for rear surface, top surface and the basal surface relative with described top surface that the front surface forming air bearing face is relative with described front surface.
12. magnetic heads as claimed in claim 11, it is characterised in that: described magnetic field generation device is formed at described top surface and/or the side of described basal surface, and layer is sandwiched between described first screen layer and described secondary shielding layer.
13. magnetic heads as claimed in claim 11, it is characterised in that: described magnetic field generation device is formed at the side of described rear surface, and layer is sandwiched between described first screen layer and described secondary shielding layer.
14. magnetic heads as claimed in claim 10, it is characterised in that: described magnetic field generation device is formed on described first screen layer and/or described secondary shielding layer.
15. magnetic heads as claimed in claim 10, it is characterised in that: described magnetic field generation device includes at least one permanent magnet.
16. magnetic heads as claimed in claim 10, it is characterised in that: described magnetic field generation device includes at least one electromagnet.
17. magnetic heads as claimed in claim 10, it is characterised in that: described magnetic field generation device includes at least one electric wire.
18. magnetic heads as claimed in claim 15, it is characterised in that: the coercivity of described permanent magnet is different from the coercivity of described magnetic layer.
19. 1 kinds of magnetic head fold piece combination, including having the head-slider of magnetic head and for supporting the cantilever part of described head-slider；Described magnetic head includes read head sensor and is formed at the writing head on described read head sensor；Described read head sensor includes the first screen layer, secondary shielding layer, the reading component being formed between described first screen layer and described secondary shielding layer and is respectively placed in described reading component both sides and the magnetic layer between described first screen layer and described secondary shielding layer for a pair；
It is characterized in that: described read head sensor also includes being formed at the magnetic field generation device of the side of described reading component, described magnetic field generation device is for being perpendicular to described first screen layer and the magnetic field of described secondary shielding layer to the offer of described reading component, thus stablizes the reading performance of described read head sensor.
20. 1 kinds of hard disk drives, drive arm, rotatable disk and for rotating the spindle motor of described disk including what the magnetic head fold piece combination with head-slider was connected with described magnetic head fold piece combination；Described head-slider has read head sensor, and described read head sensor includes the first screen layer, secondary shielding layer, the reading component being formed between described first screen layer and described secondary shielding layer and is respectively placed in described reading component both sides and the magnetic layer between described first screen layer and described secondary shielding layer for a pair；
It is characterized in that: described read head sensor also includes being formed at the magnetic field generation device of the side of described reading component, described magnetic field generation device is for being perpendicular to described first screen layer and the magnetic field of described secondary shielding layer to the offer of described reading component, thus stablizes the reading performance of described read head sensor.
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| CN201110123074.0A CN102779529B (en) | 2011-05-12 | 2011-05-12 | Read head sensor, magnetic head, magnetic head fold piece combination and hard disk drive |
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| CN201110123074.0A CN102779529B (en) | 2011-05-12 | 2011-05-12 | Read head sensor, magnetic head, magnetic head fold piece combination and hard disk drive |
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| Publication Number | Publication Date |
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| CN102779529A CN102779529A (en) | 2012-11-14 |
| CN102779529B true CN102779529B (en) | 2016-08-03 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1674093A (en) * | 2004-03-08 | 2005-09-28 | 日立环球储存科技荷兰有限公司 | Magnetic head of magnetic recording head sensor with adaptive domain stabilization |
| CN1766998A (en) * | 2004-10-29 | 2006-05-03 | 日立环球储存科技荷兰有限公司 | Winged pole and shield structure for reducing stray field in a perpendicular write head |
| KR20070010649A (en) * | 2005-07-19 | 2007-01-24 | 삼성전자주식회사 | A magnetic head and driving system employing the same |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1674093A (en) * | 2004-03-08 | 2005-09-28 | 日立环球储存科技荷兰有限公司 | Magnetic head of magnetic recording head sensor with adaptive domain stabilization |
| CN1766998A (en) * | 2004-10-29 | 2006-05-03 | 日立环球储存科技荷兰有限公司 | Winged pole and shield structure for reducing stray field in a perpendicular write head |
| KR20070010649A (en) * | 2005-07-19 | 2007-01-24 | 삼성전자주식회사 | A magnetic head and driving system employing the same |
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