CN204303491U - A kind of magnetic field applicator - Google Patents
A kind of magnetic field applicator Download PDFInfo
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- CN204303491U CN204303491U CN201420666571.4U CN201420666571U CN204303491U CN 204303491 U CN204303491 U CN 204303491U CN 201420666571 U CN201420666571 U CN 201420666571U CN 204303491 U CN204303491 U CN 204303491U
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Abstract
The utility model provides a kind of magnetic field applicator.This device comprises permanent magnet, soft magnetic bodies and coil; Soft magnetic bodies and permanent magnet form magnetic loop, carry out magnetic conduction for the D.C. magnetic field produced by permanent magnet; Coil detours in soft magnetic bodies, for generation of AC magnetic field; During duty, the D.C. magnetic field that permanent magnet produces is through soft magnetic bodies magnetic conduction, and form the D.C. magnetic field after magnetic conduction, sample is placed in the D.C. magnetic field after this magnetic conduction, sample is subject to D.C. magnetic field effect; Apply alternating current to coil, sample is subject to AC magnetic field effect.This apparatus structure is simple, flexible function, easy to use, has a good application prospect, and can be used for nanometer many reference amounts coupling in-situ detecting system, can original position, synchronously, in real time detect the magnetic property etc. of sample under direct current or AC magnetic field effect.
Description
Technical field
The utility model relates to a kind of magnetic field applicator.
Background technology
Magnetic field applicator is a kind of device providing magnetic field, can be applicable to many fields.But current magnetic field applicator is divided into D.C. magnetic field bringing device and AC magnetic field bringing device, therefore design that a kind of structure is simple, flexible function more, the magnetic field applicator of D.C. magnetic field and AC magnetic field can be provided simultaneously then to have great importance.
Such as, along with the development of nanosecond science and technology, more and more stronger to the requirement of the means of testing of micro-nano signal.The use of scanning probe microscopy greatly improves the ability in the cognitive micro-nano world of researcher.Micro-nano device in use can be subject to the various effects from the external world, comprises magnetic action, electric field action, light action and heat effect etc., and the performance of micro-nano device, under the effect in these outfields, the problem what kind of change is people's general concern can occur.But the magnetic field applicator on existing scanning probe microscopy also exists that to apply magnetic field large not and only have the shortcomings such as single magnetic field, the change of micro-nano device performance under on-spot study magnetic fields cannot be met.
Utility model content
The utility model provides a kind of magnetic field applicator, utilizes this device can provide D.C. magnetic field or AC magnetic field to sample.
The technical solution of the utility model is: a kind of magnetic field applicator, comprises permanent magnet, soft magnetic bodies and coil;
Permanent magnet, for generation of D.C. magnetic field;
Soft magnetic bodies, forms magnetic loop with permanent magnet, carries out magnetic conduction for the D.C. magnetic field produced by permanent magnet;
Coil, detours in soft magnetic bodies, for generation of AC magnetic field;
During duty, the D.C. magnetic field that permanent magnet produces is through soft magnetic bodies magnetic conduction, and form the D.C. magnetic field after magnetic conduction, sample is placed in the D.C. magnetic field after this magnetic conduction, sample is subject to D.C. magnetic field effect; Apply alternating current to coil, form AC magnetic field, sample is subject to AC magnetic field effect.
In the utility model, permanent magnet is adjustable relative to the azimuth of soft magnetic bodies.Permanent magnet produces D.C. magnetic field, and soft magnetic bodies is by this D.C. magnetic field magnetic conduction to certain area, and this magnetic conduction degree is decided by the angle that is coupled of permanent magnet and soft magnetic bodies, that is, the magnetic line of force of permanent magnet passes the degree of soft magnetic bodies.Adjustment permanent magnet, relative to the azimuth of soft magnetic bodies, makes the magnetic line of force of permanent magnet larger through the degree of soft magnetic bodies, then the angle that is coupled is larger, and the magnetic field intensity of the D.C. magnetic field after magnetic conduction is larger.Therefore, the size of the D.C. magnetic field after magnetic conduction can be changed relative to the azimuth of soft magnetic bodies by change permanent magnet.
Described permanent magnet material is not limit, and comprises Al-Ni-Co series permanent-magnet alloy, siderochrome cobalt system permanent-magnet alloy, permanent-magnet ferrite, rare earth cobalt permanent magnets, Nd-Fe-Bo permanent magnet material, and a kind of material in composite magnetic etc. or several composite materials.
Described soft magnet material is not limit, comprise iron Si system alloy, iron aluminum series alloy, iron silicon aluminum series alloy, nickel iron-based alloy, iron Co-based alloy, soft magnetic ferrite, amorphous soft magnetic alloy, and a kind of material in super-microcrystalline soft magnetic alloy etc. or several composite materials.
As a kind of implementation, soft magnetic bodies is made up of the soft magnetic bodies of flexure type and the second soft magnetic bodies of flexure type; One end of first soft magnetic bodies is A1, and the other end is A2, and one end of the second soft magnetic bodies is B1, and the other end is B2; Permanent magnet, between the A1 end of the first soft magnetic bodies and the B1 of the second soft magnetic bodies are held, forms magnetic loop with the first soft magnetic bodies, the second soft magnetic bodies; Sample is between the A2 end of the first soft magnetic bodies and the B2 of the second soft magnetic bodies are held; Coil detours in the first soft magnetic bodies and the second soft magnetic bodies.During duty, the D.C. magnetic field that permanent magnet produces, through the first soft magnetic bodies and the second soft magnetic bodies magnetic conduction, forms the D.C. magnetic field E1 ' after magnetic conduction, applies alternating current to coil, and form AC magnetic field E2, therefore, sample is subject to AC magnetic field E2 effect.
Permanent magnet is adjustable relative to the azimuth of the first soft magnetic bodies and the second soft magnetic bodies.D.C. magnetic field E1 ' is decided by the coupling angle of permanent magnet relative to soft magnetic bodies, that is, the magnetic line of force of permanent magnet passes the degree of the first soft magnetic bodies and the second soft magnetic bodies.Adjustment permanent magnet, relative to the azimuth of the first soft magnetic bodies and the second soft magnetic bodies, makes the magnetic line of force of permanent magnet larger through the degree of the first soft magnetic bodies, then coupling angle is larger, and the magnetic field intensity of the D.C. magnetic field E1 ' after magnetic conduction is larger.Therefore, the size of the D.C. magnetic field E1 ' after magnetic conduction can be changed relative to the azimuth of the first soft magnetic bodies and the second soft magnetic bodies by changing permanent magnet.As preferably, centered by permanent magnet, the first soft magnetic bodies and the second soft magnetic bodies are that geometry symmetry is placed.
In sum, the utility model utilizes the coupling of permanent magnet and soft magnetic bodies to realize applying D.C. magnetic field to sample, the D.C. magnetic field being greater than 1500 more than Oe can be produced, simultaneously, AC magnetic field can also be applied to sample, therefore be a kind of Multifunction bringing device, flexible function, easy to use, have a good application prospect, such as, for nano magnetic-electricity-Re many reference amounts coupling in-situ detecting system, this system can original position, synchronously, in real time detect the magnetic property of sample under direct current or AC magnetic field effect, and electrical properties and/or thermal property.
Accompanying drawing explanation
Fig. 1 is the magnetic field applicator working state schematic representation in the utility model embodiment 1;
Fig. 2 is the magnetic field applicator working state schematic representation in the utility model embodiment 2.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail, it is pointed out that the following stated embodiment is intended to be convenient to understanding of the present utility model, and any restriction effect is not play to it.
The Reference numeral of Fig. 1 and Fig. 2 is: 101-sample, 102-first soft magnetic bodies, 103-coil, 104-permanent magnet, 105-second soft magnetic bodies.
Embodiment 1:
As shown in Figure 1, magnetic field applicator comprises permanent magnet 104, soft magnetic bodies and coil 103.Soft magnetic bodies is made up of with the second soft magnetic bodies 105 of flexure type the first soft magnetic bodies 102 of flexure type.One end of first soft magnetic bodies 102 is A1, and the other end is A2, and one end of the second soft magnetic bodies 105 is B1, and the other end is B2.Permanent magnet 104, between the A1 end of the first soft magnetic bodies 102 and the B1 of the second soft magnetic bodies 105 are held, forms magnetic loop with the first soft magnetic bodies 102 and the second soft magnetic bodies 105.Centered by permanent magnet 104, the first soft magnetic bodies 102 and the second soft magnetic bodies 105 are that geometry symmetry is placed.
Sample 101 is between the A2 end of the first soft magnetic bodies 102 and the B2 of the second soft magnetic bodies 105 are held.Coil 103 detours in the first soft magnetic bodies 102 and the second soft magnetic bodies 105, and its one end is positioned at the A1 end of the first soft magnetic bodies 102, and the other end is positioned at the B1 end of the second soft magnetic bodies 105.
During duty, the D.C. magnetic field E1 that permanent magnet 1 produces, through soft magnetic bodies 21 and soft magnetic bodies 22 magnetic conduction, forms the D.C. magnetic field E1 ' after magnetic conduction.Apply alternating current to coil 3, form AC magnetic field E2.Therefore, sample 4 can be subject to D.C. magnetic field E1 ' or AC magnetic field E2 effect.
In the present embodiment, D.C. magnetic field E1 ' be decided by permanent magnet 1 relative to soft magnetic bodies 2 coupling angle, namely, the magnetic line of force of permanent magnet 1 passes completely through the first soft magnetic bodies 102 and the second soft magnetic bodies 105, namely the angle that is coupled is maximum, and the magnetic field intensity of the D.C. magnetic field E1 ' after magnetic conduction is maximum, is 2000 Oe.
Embodiment 2:
In the present embodiment, the structure of magnetic field applicator and embodiment magnetic field applicator is wherein substantially identical, difference is, as shown in Figure 2, change permanent magnet 104 relative to 102 with the azimuth of the second soft magnetic bodies 105, the magnetic line of force making permanent magnet 104 is not through the first soft magnetic bodies 102 and the second soft magnetic bodies 105, and namely coupling angle is minimum, the magnetic field intensity of the D.C. magnetic field E1 ' after magnetic conduction is minimum, is 0 Oe.
Above-described embodiment has been described in detail the technical solution of the utility model; be understood that and the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all make in spirit of the present utility model any amendment, supplement or similar fashion substitute etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a magnetic field applicator, is characterized in that: comprise permanent magnet, soft magnetic bodies and coil;
Permanent magnet is for generation of D.C. magnetic field;
Soft magnetic bodies and permanent magnet form magnetic loop, carry out magnetic conduction for the D.C. magnetic field produced by permanent magnet;
Coil detours in soft magnetic bodies, for generation of AC magnetic field;
During duty, the D.C. magnetic field that permanent magnet produces is through soft magnetic bodies magnetic conduction, and form the D.C. magnetic field after magnetic conduction, sample is placed in the D.C. magnetic field after this magnetic conduction, sample is subject to D.C. magnetic field effect; Apply alternating current to coil, form AC magnetic field, sample is subject to AC magnetic field effect.
2. magnetic field applicator as claimed in claim 1, is characterized in that: permanent magnet is adjustable relative to the azimuth of soft magnetic bodies.
3. magnetic field applicator as claimed in claim 1, is characterized in that: soft magnetic bodies is made up of the soft magnetic bodies of flexure type and the second soft magnetic bodies of flexure type; One end of first soft magnetic bodies is A1, and the other end is A2, and one end of the second soft magnetic bodies is B1, and the other end is B2; Permanent magnet, between the A1 end of the first soft magnetic bodies and the B1 of the second soft magnetic bodies are held, forms magnetic loop with the first soft magnetic bodies, the second soft magnetic bodies; Sample is between the A2 end of the first soft magnetic bodies and the B2 of the second soft magnetic bodies are held; Coil detours in the first soft magnetic bodies and the second soft magnetic bodies.
4. magnetic field applicator as claimed in claim 3, is characterized in that: centered by permanent magnet, and the first described soft magnetic bodies and the second soft magnetic bodies are that geometry symmetry is placed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420666571.4U CN204303491U (en) | 2014-11-10 | 2014-11-10 | A kind of magnetic field applicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420666571.4U CN204303491U (en) | 2014-11-10 | 2014-11-10 | A kind of magnetic field applicator |
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| Publication Number | Publication Date |
|---|---|
| CN204303491U true CN204303491U (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420666571.4U Active CN204303491U (en) | 2014-11-10 | 2014-11-10 | A kind of magnetic field applicator |
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| CN (1) | CN204303491U (en) |
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2014
- 2014-11-10 CN CN201420666571.4U patent/CN204303491U/en active Active
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