CN1252682C - Magnetic medium of rotary polar electronic and device and method of recording data on it - Google Patents
Magnetic medium of rotary polar electronic and device and method of recording data on it Download PDFInfo
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- CN1252682C CN1252682C CN 200310102677 CN200310102677A CN1252682C CN 1252682 C CN1252682 C CN 1252682C CN 200310102677 CN200310102677 CN 200310102677 CN 200310102677 A CN200310102677 A CN 200310102677A CN 1252682 C CN1252682 C CN 1252682C
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Abstract
A magnetic medium using spin-polarized electrons, and an apparatus and method of recording data on the magnetic medium are provided. The magnetic medium includes a polarization layer and a magnetic recording layer. The polarization layer spin-polarizes electrons. In the magnetic recording layer, the direction of magnetization varies depending on the direction of the spin-polarization of the electrons. The data recording apparatus includes a light source and a probe. The light source radiates circularly polarized light, and the probe injects electrons spin-polarized by the circularly polarized light into a magnetic medium and changes the direction of the magnetization of the magnetic medium to record data on the magnetic medium. Because the direction of magnetization is adjusted using spin-polarized electrons, fast data recording can be achieved.
Description
Technical field
The present invention relates to a kind of magnetic medium and in the apparatus and method of this magnetic medium identifying recording layer, relate in particular to a kind of magnetic medium that uses the electron scattering that rotation relies on, in the apparatus and method of this magnetic medium identifying recording layer.
Background technology
In traditional data storage device, if with magnetic medium as recording medium, on magnetic recording medium, store data by the direction of magnetization that counter-rotating is caused by magnetic field.When the recording density of traditional data storage device increases, the just minimum record cell of fritter will become littler, therefore, and for the magnetic field of record data also must reduce so that focus on very little area corresponding to this fritter.Yet opposite one side is that along with the increase on the size of magnetospheric magnetic anisotropy, the magnetized magnetic field intensity of magnetosphere that is used for reversing also must increase.
In order to overcome the technical matters of conventional art, United States Patent (USP) NO.6,304,481 disclose a kind of with spin-polarized electrons data storing method and device.
Comprise the electron source 40 of most advanced and sophisticated 2b, spin-polarized electrons 3 is provided, most advanced and sophisticated 2b collects electronics.Extractor 4 is from most advanced and sophisticated 2b sucking-off spin-polarized electrons, and collimating apparatus 6,7 and 9 is spin-polarized electrons bundle 19 to spin-polarized electrons 3 collimations.Electrostatic lens 10,11 and 12 focuses on spin-polarized electrons bundle 19, and the microdeflector 14 and 15 of coarse adjustment and fine setting is directed at a magnetic field that generates in certain part of data storage layer 17 to spin-polarized electrons bundle 19 separately, and data are in Data store layer stores.
Data storage layer 17 comprises the conducting material 27 of a large amount of arrange regional 22 and insulated body 28 and data storage layer electronics 17 electrical isolations.
Disclosed data storage device at specific data area focused beam, must critically be adjusted electromotive force.Accurate adjustment electromotive force is very difficult, and from the place of record data accurately output signal also be not easy, this will cause the data reproduction difficulty.And, owing to use traditional magnetic medium, limiting the increase of magnetic medium data recording density, and the complex structure of disclosed data storage device.
Summary of the invention
The electronics that the invention provides the single-rotating direction that a kind of high density, jumbo usefulness receive thereon record data magnetic recording medium and use the apparatus and method of probe magnetropism media injections electronics at high speed.
According to one aspect of the present invention, provide a kind of pen recorder that comprises a light source and a probe.The polarized light of radiation of light source circle.Probe is injected into magnetic medium by the electronics with the polarized light rotary polarization of circle, and the direction of magnetization that changes magnetic medium is with at the magnetic medium identifying recording layer.
According to this aspect of the present invention, light source is a laser.
According to this aspect of the present invention, a kind of data recording equipment that its tip is covered with a probe of thin magnetic film that is included in also is provided, this thin magnetic film spin-polarized electrons, the probe electron injection enters a magnetic medium, and the direction of magnetization of a magnetic recording layer that changes magnetic medium is with at the magnetic medium identifying recording layer.
According to this aspect of the present invention, provide a kind of pen recorder that comprises a magnetic medium and a probe.This magnetic medium comprises the polarization layer and the recording layer that are used for spin-polarized electrons.The direction of magnetization of recording layer changes along with electronics rotary polarization direction.Probe is at the magnetic medium identifying recording layer.
According to another aspect of the present invention, a kind of polarization layer of a rotary polarization (spinpolarized) electronics and magnetic medium of a magnetic recording layer of comprising is provided, direction of magnetization changes according to the rotary polarization direction of electronics in recording layer.
According to another aspect further of the present invention, a kind of data record method is provided, this method comprises with a probe injection spin-polarized electrons advancing a magnetic medium and changing the direction of magnetization of a recording layer of magnetic medium at the magnetic medium identifying recording layer by the rotary polarization direction according to electronics.
According to another aspect further of the present invention, electronics is by the circular polarized light rotary polarization, and this circular polarization is laser only.
According to another aspect further of the present invention, probe has a tip that is covered with film that can polarized electron.
According to another aspect further of the present invention, a kind of method for recording data is provided, this method comprises that preparing one has the magnetic medium of a recording layer and a polarization layer and the probe of record data when it is mobile on magnetic medium, changes the direction of magnetization of magnetic medium recording layer at the magnetic medium identifying recording layer with the polarization layer polarized electron with by the rotary polarization direction according to electronics.
According to another aspect further of the present invention, electronics is injected by probe or magnetic medium.
According to another aspect further of the present invention, each magnetic recording layer and polarization layer have one of them of magnetic anisotropy on the magnetic anisotropy and orthogonal directions longitudinally.
According to another aspect further of the present invention, magnetic recording layer and polarization layer are continuous films, and each fritter is arranged continuously on it, or forms pattern wholly or in part.
According to another aspect further of the present invention, magnetic recording layer and polarization layer are that their each fritter is the film that is formed by minimum particulate.
According to another aspect further of the present invention, an oxide layer is arranged at polarization layer or on magnetic recording layer, this oxide layer of electron tunneling further is formed on the interface between magnetic recording layer and the polarization layer or is formed on the polarization layer or is formed on the magnetic recording layer.
According to another aspect further of the present invention, on the interface between magnetic recording layer and the polarization layer, further form a metal level.
As mentioned above, there is its polarised direction to be rotated the magnetic recording layer of rotation-rotary torque change of power and spin-polarized electrons about magnetic medium of the present invention.In the method for relevant data recording equipment of the present invention, there is the electronics of single-rotating direction to be injected into magnetic medium, therefore, because this data recording equipment fast recording that can realize data simple in structure.
Description of drawings
With reference to the accompanying drawing in the specific embodiment, above-mentioned and other characteristics of the present invention and advantage will seem clearer by the specific descriptions of embodiment, wherein:
Accompanying drawing 1 is laid-open U.S. Patents NO.6, the sectional view of 304,481 data recording equipment;
Accompanying drawing 2 is the block diagrams about the data recording equipment of first embodiment of the invention;
Accompanying drawing 3 is the block diagrams about the data recording equipment of second embodiment of the invention;
Accompanying drawing 4A shows is the block diagram at the data recording equipment of magnetic medium identifying recording layer about the magnetic medium of the third embodiment of the present invention and third embodiment of the invention; With
Accompanying drawing 4B shows is the block diagram at the data recording equipment of magnetic medium identifying recording layer about the magnetic medium of the fourth embodiment of the present invention and fourth embodiment of the invention.
Embodiment
With reference to accompanying drawing 2, comprise magnetic medium 115, probe 111 and controller 117 about the data storage device of first embodiment of the invention.Magnetic medium 115 is made up of substrate 115b and the upper surface magnetic recording layer 115a that is formed on substrate 115b.Probe 111 is made up of the semi-girder 111b that a most advanced and sophisticated 111a and an end are equipped with most advanced and sophisticated 111a.Controller 117 not only is electrically connected with probe 111 but also with magnetic medium 115, and electric current is provided for probe 111.
For at the magnetic recording layer 115a of magnetic medium 115 record data, probe 111 contacts with magnetic recording layer 115a, and controller 117 provides voltage to most advanced and sophisticated 111a.At this moment, the electronics that inspires of most advanced and sophisticated 111a is all changed into a direction by the circular polarized light pole of rotation of the left-handed or dextrorotation that gives off from the light source 113 that is installed on the probe 111.Magnetic recording layer 115a is sent and be injected into to spin-polarized electrons from most advanced and sophisticated 111a.The rotary power of each electronics or rotation-rotary torque are transferred to the direction of magnetization that changes these fritters on the fritter of magnetic recording layer 115a.
Most advanced and sophisticated 111a can be a traditional semiconductor tip or metallic conductor tip.The signal type that semi-girder relies on slave controller 117 to receive changes the position of most advanced and sophisticated 111a.Controller 117 can comprise the circuit of the position of common control semi-girder 111b, and can adjust the amount of electric current.
Magnetic recording layer 115a can by have vertically or orthogonal directions on the numerous film that the ferromagnetic material of magnetic anisotropy forms or continuous film or a monoblock have minimum particulate to form.Magnetic recording layer 115a can completely or partially form pattern.There is the magnetosphere of unidirectional magnetiztion direction can further be formed on the interface between substrate 115b and the magnetic recording layer 115a.
Accompanying drawing 3 is about the data recording equipment of second embodiment of the invention and the block diagram of method.With reference to accompanying drawing 3, data storage device comprises: probe 121, magnetic medium 125 and controller 127.Probe 121 has most advanced and sophisticated 121a that the thin magnetic film of unidirectional magnetiztion direction is arranged of a cover.Magnetic medium 125 comprises magnetic recording layer 125a.When by thin magnetic film 123 by the electronics of a direction rotary polarization when probe 121 is directed magnetic medium 125, with the direction of magnetization of that piece on the probe 121 contacted magnetic recording layer 125a by consistent with the rotary polarization direction of electronics and arrange.Controller 127 provide electric current to probe 121 so that electronic energy is guided into probe 121.In other words, spin-polarized electrons is with being transferred to the rotary power of magnetic recording layer 125a or the direction of magnetization that rotation-rotary torque changes magnetic recording layer 125a.Magnetic medium 125 can be that common magnetic medium also can be any magnetic medium of recording layer of being magnetic.Magnetic recording layer 125a can have the numerous fritters that formed by minimum particulate.
Accompanying drawing 4A shows is about the magnetic medium 135 of the third embodiment of the present invention with about the block diagram of the data recording equipment of the third embodiment of the invention that comprises magnetic medium 135.With reference to accompanying drawing 4A, about the magnetic medium 135 of the third embodiment of the present invention comprise substrate 135b, be formed on substrate 135b upper surface magnetic recording layer 135a and be formed on the polarization layer 134 of the upper surface of magnetic recording layer 135a.Polarization layer 134 is that single direction of magnetization magnetosphere is arranged, and the spin-polarized electrons that penetrates from probe 131 is received by a direction, and transmission rotary polarization electric current is to magnetic recording layer 135a.Magnetic recording layer 135a can be a continuous films, and each piece of there is arranged continuously, or formation pattern complete or part.Fritter can be formed by minimum particulate.The direction of magnetization of each piece changes according to the rotary polarization direction of the electronics of layer 134 rotary polarization that are magnetized, so data are recorded on the magnetic recording layer 135a.
About the data recording equipment of third embodiment of the invention at magnetic medium 135 identifying recording layers.For reaching this purpose, add magnetic medium 135, data recording equipment comprises probe 131 and controller 137.Probe 131 comprises that a common conductor tip 131a and an end are connected with the semi-girder 131b of most advanced and sophisticated 131a.Controller 117 provides electric current to probe 131, and for mobile semi-girder 131b at each fritter identifying recording layer of magnetic recording layer 135a and on polarization layer 134.Most advanced and sophisticated 131a, magnetic medium 135 and controller 137 form a circuit, and electronics is expelled to magnetic medium 135 by most advanced and sophisticated 131a.The electronics that receives is by magnetized layer 134 rotary polarizations of magnetic medium 135.The direction of magnetization of each piece of magnetic recording layer 135a changes according to the rotary polarization direction of electronics, so data are recorded on the magnetic recording layer 135a.
If magnetized layer 134 is different with the direction of magnetization of magnetic recording layer 135a, electronics is injected into magnetic medium 135 by most advanced and sophisticated 131a.Injected electronics is rotated polarization by the direction of magnetization of magnetized layer 134 by polarization layer 134 time.The direction of magnetization of each piece of magnetic recording layer 135a changes according to the rotary polarization direction of injected electronics, so data are recorded.If the direction of magnetization of magnetized layer 134 and magnetic recording layer is identical, electronics is injected into magnetic medium 135 by substrate 136.The electron-osmosis identical with the rotary polarization direction of polarization layer 134 in the middle of injected electronics is to magnetic recording layer 135a and polarization layer 134.On the other hand, the electronics different with the rotary polarization direction of polarization layer 134 turn back to magnetic recording layer 135a from polarization layer 134, and the direction of magnetization of each piece of magnetic recording layer 135a to be record data change according to the rotary polarization direction of return electron.
Accompanying drawing 4B shows is magnetic medium 145 and another block diagram about the data recording equipment of fourth embodiment of the invention about fourth embodiment of the invention, and data are recorded on the magnetic medium 145.With magnetic medium 135 contrasts of accompanying drawing 4A, the magnetic medium 145 of accompanying drawing 4B has a magnetized layer and a magnetic recording layer structure out of position therein, and just, magnetic recording layer 145a is formed on the polarization layer 144.In the structure that this is put upside down, electronics is injected into magnetic medium 145 from an opposite path.The conductor probe is identical with controller 137 with the probe among Fig. 4 A 131 with control circuit, can be used as probe 141, and it can electron injection arrive recording medium 145 and controller 147, and it provide electric current can for probe 141.Label 141a represents a tip, and label 141b represents a semi-girder that supports most advanced and sophisticated 141a.
If magnetized layer 144 is identical with the direction of magnetization of magnetic recording layer 145a, electronics is injected into magnetic medium 145 by most advanced and sophisticated 141a.The electron-osmosis identical with the rotary polarization direction of polarization layer 144 in the middle of injected electronics is to magnetic recording layer 134a and polarization layer 144.On the other hand, the electronics different with the rotary polarization direction of polarization layer 144 turn back to magnetic recording layer 145a from polarization layer 144, and the direction of magnetization of each piece of magnetic recording layer 145a to be record data change according to the rotary polarization direction of return electron.If magnetized layer 144 is different with the direction of magnetization of magnetic recording layer 145a, electronics is injected into magnetic medium 145 by substrate 145b.By polarization layer 144 time, be rotated polarization by substrate 145b electrons transmitted.Arranged according to the rotary polarization direction of electronics with the direction of magnetization of each piece of probe 141 contacted magnetic recording layer 145a.
Data recording equipment about the present invention third and fourth embodiment comprises probe 131 and probe 141, reproduces data from the magnetic medium 135 and 145 about the present invention third and fourth embodiment respectively.And data recording equipment is at magnetic medium 135 and 145 identifying recording layers, according to different polarization layer 134 and 144 and the arrangement of magnetic recording layer 135a and 145a in different directions electron injection enter magnetic medium 135 and 145.
In the present invention, spin-polarized electrons has comprised light source probe and polarization layer in one direction, and the direction of magnetization of magnetic recording layer is arranged according to the direction of the rotary polarization of electric current.Like this, can realize fast recording.
Although embodiment wherein is by the demonstration and the description of part for the present invention's reference,, one of ordinary skill in the art will appreciate that, can the change that the present invention carries out on formal and the details not broken away from the claim scope.
As mentioned above, about of the present inventionly comprise the magnetic medium of polarization layer, in the apparatus and method of this magnetic medium identifying recording layer, the direction of magnetization of each piece by magnetic recording layer changes according to the rotary polarization direction of electronics can realize fast recording.
Claims (7)
1. data recording equipment comprises:
The light source of a radiation circular polarized light; With
A probe, this probe be being injected into magnetic medium by the electronics of circular polarized light rotary polarization, and the direction of magnetization that changes magnetic medium is with at the magnetic medium identifying recording layer.
2. data recording equipment as claimed in claim 1, wherein light source is a laser.
3. data recording equipment, this device is included in the probe that its tip is covered with thin magnetic film, this thin magnetic film spin-polarized electrons, the probe electron injection is advanced magnetic medium, and the direction of magnetization of magnetic recording layer that changes magnetic medium is with at the magnetic medium identifying recording layer.
4. data record method, this method comprises:
Spin-polarized electrons is injected into a magnetic medium by a probe; With
Utilization change according to the rotary polarization direction of electronics magnetic medium recording layer direction of magnetization and at the magnetic medium identifying recording layer.
5. data record method as claimed in claim 4, wherein electronics is by the circular polarized light rotary polarization.
6. data record method as claimed in claim 5, wherein circular polarization laser only.
7. data record method as claimed in claim 4, a tip of its middle probe is covered with thin magnetic film, this thin magnetic film spin-polarized electrons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310102677 CN1252682C (en) | 2002-10-14 | 2003-10-14 | Magnetic medium of rotary polar electronic and device and method of recording data on it |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR62481/02 | 2002-10-14 | ||
| KR62481/2002 | 2002-10-14 | ||
| KR56423/03 | 2003-08-14 | ||
| KR56423/2003 | 2003-08-14 | ||
| CN 200310102677 CN1252682C (en) | 2002-10-14 | 2003-10-14 | Magnetic medium of rotary polar electronic and device and method of recording data on it |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510072696XA Division CN100437753C (en) | 2002-10-14 | 2003-10-14 | Magnetic medium using spin-polarized electrons and apparatus and method of recording data on the magnetic medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1497533A CN1497533A (en) | 2004-05-19 |
| CN1252682C true CN1252682C (en) | 2006-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200310102677 Expired - Fee Related CN1252682C (en) | 2002-10-14 | 2003-10-14 | Magnetic medium of rotary polar electronic and device and method of recording data on it |
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| CN (1) | CN1252682C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100657947B1 (en) * | 2005-02-02 | 2006-12-14 | 삼성전자주식회사 | Electrical Read HeadProbe having high sensitivity and resolution power and method of operating the same |
| US9190500B2 (en) * | 2012-08-14 | 2015-11-17 | Japan Science And Technology Agency | Spin polarization transistor element |
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| CN1497533A (en) | 2004-05-19 |
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Granted publication date: 20060419 Termination date: 20091116 |