CN203299362U - Saturation magnetization intensity measuring device - Google Patents
Saturation magnetization intensity measuring device Download PDFInfo
- Publication number
- CN203299362U CN203299362U CN2013203620045U CN201320362004U CN203299362U CN 203299362 U CN203299362 U CN 203299362U CN 2013203620045 U CN2013203620045 U CN 2013203620045U CN 201320362004 U CN201320362004 U CN 201320362004U CN 203299362 U CN203299362 U CN 203299362U
- Authority
- CN
- China
- Prior art keywords
- coils
- saturation magnetization
- maxwell
- coil
- helmholtz
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Measuring Magnetic Variables (AREA)
Abstract
The utility model discloses a saturation magnetization intensity measuring device. The saturation magnetization intensity measuring device comprises a magnetic field generation device and a magnetic force measuring device, wherein the magnetic force measuring device is a force measuring meter, a force measuring end of the force measuring meter and a ferromagnetism material sample to be measured are connected through a hanging band, the magnetic field generation device comprises two Maxwell coils and two Helmholtz coils which form two pairs of magnetic field coils, any two coils are parallel and coaxial, a uniform gradient magnetic field is generated, and the ferromagnetism material sample to be measured is placed at a central area of the two pairs of magnetic field coils of the magnetic field generation device. The two pairs of Maxwell coils and Helmholtz coils provide the uniform gradient magnetic field, and saturation magnetization intensity of a ferromagnetism material object can be precisely measured. The saturation magnetization intensity measuring device is simple, is convenient to operate, has low manufacturing cost and can meet requirements for measuring saturation magnetization intensity of different ferromagnetism materials.
Description
Technical field
The utility model relates to a kind of material property measurement mechanism, particularly relates to a kind of magnetic property measurement mechanism of magnetisable material, belongs to material property detection technique field.
Background technology
Saturation magnetization is a characteristic of ferromagnetic material.Under the effect of ferromagnetic material outside magnetic field, inner magnetic field intensity can increase along with the increase of external magnetic field intensity; To a certain extent the time, the magnetization of ferromagnetic material inside just remains on a stable numerical value when the external magnetic field strength increase, and at this moment ferromagnetic material has just reached the saturated magnetization state.This stable magnetization numerical value is called the saturation magnetization of this material.
Saturation magnetization M
SBe important physical property parameter of ferromagnetic material, it is the important value of research material inner structure and physics thereof, chemical characteristic.Measurement of species saturation magnetization M
SMethod have a variety ofly, common are inductive electromagnetic method and force analysis method.Inductive electromagnetic method is to determine M by measuring sample interior or sample magnetic flux on every side
SValue; The force analysis method is to measure M by sample stressed size in gradient magnetic
SValue, as sedimentation balance method commonly used, ring title method.This kind measuring method easily is subject to external environment influence, and error component is more, and therefore, measured saturation magnetization value has certain deviation with reality.Measurement mechanism generally adopts vibrating sample magnetometer accurately, and it can draw curve automatically, and again accurately and reliably, but the instrument price is very expensive, generally is difficult to obtain.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of measurement mechanism of saturation magnetization is provided, by Maxwell-Helmholtz's biconjugate coil, provide uniform gradient magnetic field, material saturation magnetization to ferrimagnet is accurately measured, its device is simple, easy to operate, and cheap for manufacturing cost, can meet the measurement of different ferromagnetic material saturation magnetizations.
For reaching foregoing invention, create purpose, the utility model adopts following technical proposals:
A kind of measurement mechanism of saturation magnetization, comprise field generator for magnetic and mgnetic observations device, the mgnetic observations device is dynamometer, between the dynamometry end of dynamometer and ferrimagnet sample to be measured, by suspension wire, connect, field generator for magnetic forms the biconjugate field coil by two circle Maxwell's coils and two circle Helmholtz coilss, setting parallel to each other and coaxial between any two circle coils, produce the magnetic field of uniform gradient, ferrimagnet sample to be measured is positioned over to the central area of the biconjugate field coil of field generator for magnetic.
As the preferred a kind of technical scheme of the utility model, two circle Helmholtz coilss are two Current-Carrying Circular Coils that diameter is identical, two circle Maxwell's coils are also two Current-Carrying Circular Coils that diameter is identical, two circle Maxwell's coils are positioned at the differing heights place of same cylinder, and corresponding with the height and position of two circle Helmholtz coilss respectively, the diameter of Helmholtz coils is greater than Maxwell's coil, and namely Maxwell's coil is enclosed within Helmholtz coils inside non-contactly.
As the preferred another kind of technical scheme of the utility model, two circle Helmholtz coilss are two Current-Carrying Circular Coils that diameter is identical, two circle Maxwell's coils are also two Current-Carrying Circular Coils that diameter is identical, two circle Maxwell's coils are positioned at the differing heights place of same cylinder, and corresponding with the height and position of two circle Helmholtz coilss respectively, the diameter of Helmholtz coils is less than Maxwell's coil, and namely Maxwell's coil is enclosed within the Helmholtz coils outside non-contactly.
Pass to respectively in up and down that size is identical, the electric current of opposite direction in two circle Maxwell's coils, in the coil central area, produce 10
-2The uniform magnetic field gradient of T/m-1T/m; In up and down, pass to respectively all identical electric currents of size, direction in two circle Helmholtz coilss, in the coil central area, produce the uniform magnetic field intensity of 200Gs-1000Gs.
The utility model compared with prior art, has following substantive distinguishing features and advantage:
1. the utility model is by the uniform gradient magnetic field of uniform gradient magnetic field device by Maxwell-Helmholtz's biconjugate coil generation, make the ferromagnetic material magnetized state that reaches capacity, regulate electric current this moment makes magnetizing force offset its gravity, and then calculates its saturation magnetization M in conjunction with every physical parameter
S, simple to operate, be easy to realize, can meet the measuring saturated magnetization of different ferromagnetic materials.
2. the measurement mechanism designs simplification of the utility model saturation magnetization, manufacturing cost is lower, and is easy to use.
The accompanying drawing explanation
Fig. 1 is the structural representation of the measurement mechanism of the utility model embodiment mono-saturation magnetization.
Fig. 2 is the structural representation of the measurement mechanism of the utility model embodiment bis-saturation magnetizations.
Embodiment
Preferred embodiment accompanying drawings of the present utility model is as follows:
Embodiment mono-:
in the present embodiment, referring to Fig. 1, a kind of measurement mechanism of saturation magnetization, comprise field generator for magnetic and mgnetic observations device, the mgnetic observations device is dynamometer 1, between the dynamometry end of dynamometer 1 and ferrimagnet sample 3 to be measured, by suspension wire 2, connect, field generator for magnetic forms the biconjugate field coil by two circle Maxwell's coils 4 and two circle Helmholtz coilss 5, setting parallel to each other and coaxial between any two circle coils, produce the magnetic field of uniform gradient, ferrimagnet sample 3 to be measured is positioned over to the central area of the biconjugate field coil of field generator for magnetic.In the present embodiment, referring to Fig. 1, two circle Helmholtz coilss 5 are two Current-Carrying Circular Coils that diameter is identical, two circle Maxwell's coils 4 are also two Current-Carrying Circular Coils that diameter is identical, two circle Maxwell's coils 4 are positioned at the differing heights place of same cylinder, and corresponding with the height and position of two circle Helmholtz coilss 5 respectively.In the present embodiment, referring to Fig. 1, the diameter of Helmholtz coils 5 is greater than Maxwell's coil 4, and namely Maxwell's coil 4 is enclosed within Helmholtz coils 5 inside non-contactly.
The measurement mechanism of the present embodiment saturation magnetization realizes that the measuring principle of saturation magnetization is as follows:
Helmholtz coils 5 produces enough large magnetic field and makes the ferrimagnet sample 3 to be measured magnetized state that reaches capacity in its hub of a spool zone, Maxwell's coil 4 produces the uniform magnetic field gradient in same position, and ferrimagnet sample 3 to be measured can be subject to a magnetic volume power opposite with its gravity in the central area of biconjugate coil:
Wherein, F
MFor the suffered magnetizing force of unit volume ferrimagnet sample 3 to be measured, Ms is the saturation magnetization of ferrimagnet sample 3 to be measured, the magnetic field gradient that dB/dh provides for Maxwell's coil 4.
Regulate the electric current of Maxwell's coil 4, when the measured value of dynamometer 1 hour, when namely the suffered magnetizing force size of ferrimagnet sample 3 to be measured equated with its gravity, saturation magnetization was satisfied at this moment:
Wherein, ρ is the density of ferrimagnet sample 3 to be measured, and g is acceleration of gravity, and dB/dh is magnetic field gradient that this moment, Maxwell's coil 4 provided.
In conjunction with above-mentioned formula, can calculate the saturation magnetization of ferrimagnet sample 3 to be measured.
It is the magnetic susceptibility such as ferrous material, magnetic fluid much larger than the measurement of the saturation magnetization of 1 material that the measurement mechanism of the present embodiment saturation magnetization especially is suitable for ferromagnetic material.
In the present embodiment, ferromagnetic material 3 adopts water-based magnetic fluid, and its density p is 1.18 * 10
3Kg/m
3At Helmholtz coils 5, pass into the 80A electric current, in the central area of coil, can produce the uniform magnetic field intensity of 567Gs, the magnetized state so that magnetic fluid reaches capacity; Then, regulate the electric current in Maxwell's coil 4, when the magnetic field gradient of its generation reaches 0.73T/m, the reading minimum on dynamometer 1, close to 0, magnetic fluid is subject to magnetizing force and offsets its gravity fully at this moment, meets formula
, the saturation magnetization that can obtain water-based magnetic fluid in conjunction with above-mentioned parameter is about 200Gs.
Embodiment bis-:
The present embodiment and embodiment mono-are basic identical, and special feature is:
In the present embodiment, referring to Fig. 2, the diameter of Helmholtz coils 5 is less than Maxwell's coil 4, be that Maxwell's coil 4 is enclosed within Helmholtz coils 5 outsides non-contactly, the measurement mechanism of employing the present embodiment saturation magnetization may reach the accurate measurement of the saturation magnetization of a pair of ferromagnetic material 3 of embodiment equally.
The above is illustrated the utility model embodiment by reference to the accompanying drawings; but the utility model is not limited to above-described embodiment; can also make multiple variation according to the purpose that utility model of the present utility model is created; the change of making under all Spirit Essences according to technical solutions of the utility model and principle, modification, substitute, combination, simplify; all should be the substitute mode of equivalence; as long as meet structure and aufbauprinciple for the measurement mechanism of the utility model saturation magnetization, all belong to protection domain of the present utility model.
Claims (4)
1. the measurement mechanism of a saturation magnetization, comprise field generator for magnetic and mgnetic observations device, described mgnetic observations device is dynamometer (1), between the dynamometry end of described dynamometer (1) and ferrimagnet sample to be measured (3), by suspension wire (2), connect, it is characterized in that: described field generator for magnetic forms the biconjugate field coil by two circle Maxwell's coils (4) and two circle Helmholtz coilss (5), setting parallel to each other and coaxial between any two circle coils, produce the magnetic field of uniform gradient, ferrimagnet sample to be measured (3) is positioned over to the central area of the biconjugate field coil of described field generator for magnetic.
2. the measurement mechanism of saturation magnetization according to claim 1, it is characterized in that: two circle Helmholtz coilss (5) are two Current-Carrying Circular Coils that diameter is identical, the described Maxwell's coil of two circles (4) is also two Current-Carrying Circular Coils that diameter is identical, the described Maxwell's coil of two circles (4) is positioned at the differing heights place of same cylinder, and corresponding with the height and position of two circle Helmholtz coilss (5) respectively.
3. the measurement mechanism of saturation magnetization according to claim 2, it is characterized in that: the diameter of described Helmholtz coils (5) is greater than described Maxwell's coil (4), and namely described Maxwell's coil (4) is enclosed within described Helmholtz coils (5) inside non-contactly.
4. the measurement mechanism of saturation magnetization according to claim 2, it is characterized in that: the diameter of described Helmholtz coils (5) is less than described Maxwell's coil (4), and namely described Maxwell's coil (4) is enclosed within described Helmholtz coils (5) outside non-contactly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203620045U CN203299362U (en) | 2013-06-24 | 2013-06-24 | Saturation magnetization intensity measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203620045U CN203299362U (en) | 2013-06-24 | 2013-06-24 | Saturation magnetization intensity measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203299362U true CN203299362U (en) | 2013-11-20 |
Family
ID=49575367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203620045U Expired - Fee Related CN203299362U (en) | 2013-06-24 | 2013-06-24 | Saturation magnetization intensity measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203299362U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548922A (en) * | 2015-12-15 | 2016-05-04 | 河海大学 | Method for determining saturated magnetization intensity of oriented silicon steel plate accurately |
| CN107121649A (en) * | 2017-03-29 | 2017-09-01 | 金华职业技术学院 | A kind of method of use magnetometer survey magnetic molecule cluster magnetic moment |
| CN109407020A (en) * | 2018-12-18 | 2019-03-01 | 中国工程物理研究院流体物理研究所 | A kind of magnetic axis measuring system of the solenoid coil based on suspension method |
| CN110824393A (en) * | 2019-09-04 | 2020-02-21 | 横店集团东磁股份有限公司 | Magnetic flux measuring device and measuring method thereof |
| CN112345986A (en) * | 2020-10-12 | 2021-02-09 | 天津科技大学 | Device and method for measuring saturation magnetization of magnetic particles |
| CN113985332A (en) * | 2021-11-18 | 2022-01-28 | 北京交通大学 | Magnetic liquid saturation magnetization comparing device |
| CN114898966A (en) * | 2022-07-13 | 2022-08-12 | 中国空气动力研究与发展中心空天技术研究所 | Maxwell combined coil based on circular magnet configuration |
-
2013
- 2013-06-24 CN CN2013203620045U patent/CN203299362U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548922A (en) * | 2015-12-15 | 2016-05-04 | 河海大学 | Method for determining saturated magnetization intensity of oriented silicon steel plate accurately |
| CN105548922B (en) * | 2015-12-15 | 2018-06-19 | 河海大学 | A kind of accurate method for measuring grain-oriented Si steel sheet saturation magnetization |
| CN107121649A (en) * | 2017-03-29 | 2017-09-01 | 金华职业技术学院 | A kind of method of use magnetometer survey magnetic molecule cluster magnetic moment |
| CN107121649B (en) * | 2017-03-29 | 2023-10-10 | 金华职业技术学院 | Method for measuring magnetic moment of magnetic molecular cluster by using magnetometer |
| CN109407020A (en) * | 2018-12-18 | 2019-03-01 | 中国工程物理研究院流体物理研究所 | A kind of magnetic axis measuring system of the solenoid coil based on suspension method |
| CN109407020B (en) * | 2018-12-18 | 2023-10-20 | 中国工程物理研究院流体物理研究所 | Magnetic axis measurement system of solenoid coil based on suspension wire method |
| CN110824393A (en) * | 2019-09-04 | 2020-02-21 | 横店集团东磁股份有限公司 | Magnetic flux measuring device and measuring method thereof |
| CN112345986A (en) * | 2020-10-12 | 2021-02-09 | 天津科技大学 | Device and method for measuring saturation magnetization of magnetic particles |
| CN113985332A (en) * | 2021-11-18 | 2022-01-28 | 北京交通大学 | Magnetic liquid saturation magnetization comparing device |
| CN113985332B (en) * | 2021-11-18 | 2023-06-09 | 北京交通大学 | Magnetic liquid saturation magnetization intensity comparison device |
| CN114898966A (en) * | 2022-07-13 | 2022-08-12 | 中国空气动力研究与发展中心空天技术研究所 | Maxwell combined coil based on circular magnet configuration |
| CN114898966B (en) * | 2022-07-13 | 2023-09-26 | 中国空气动力研究与发展中心空天技术研究所 | Maxwell combined coil based on circular magnet configuration |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203299362U (en) | Saturation magnetization intensity measuring device | |
| CN203465407U (en) | Soft-magnetic-material-magnetic-conductivity measurement experiment device based on oscilloscope and signal generator | |
| CN107315150A (en) | A kind of orthogonal basic mode fluxgate sensor | |
| CN103162896A (en) | High-sensitivity magnetic liquid micro-pressure difference sensor | |
| CN101308197B (en) | Magnetic flux door sensor probe | |
| CN102565728A (en) | Method for measuring magnetic permeability of cylindrical soft magnetic material | |
| CN104006915B (en) | A kind of wide range magnetic-liquid micro differential pressure sensor | |
| CN103542975A (en) | Micro-differential-pressure magnetic liquid sensor with high sensitivity | |
| CN110412336A (en) | A kind of detection probe of high precision electric current transducer | |
| CN207181651U (en) | A kind of orthogonal basic mode fluxgate sensor | |
| CN205844507U (en) | Fluxgate magnetic core structure based on nurse hertz coil suddenly | |
| CN203502481U (en) | Single-magnetic-ring four-coil DC current detection device | |
| CN202033405U (en) | Current measuring device | |
| CN203132562U (en) | Linear thin-film magnetoresistive sensor, linear thin-film magnetoresistive sensor circuit, closed-loop current sensor and open-loop current sensor | |
| CN107356887B (en) | Spherical triaxial fluxgate probe | |
| CN203204135U (en) | U type single magnetic core magnetic flux gate probe | |
| CN108445282A (en) | A kind of implementation method of integrated current detection and inductive function | |
| CN105092143A (en) | Wide-range magnetic-liquid micro differential pressure sensor | |
| CN105137370A (en) | Low power consumption miniature fluxgate sensor | |
| CN106125021B (en) | The measurement method of permeability magnetic material characteristic under a kind of quadrature bias magnetic field | |
| CN212781188U (en) | Magnetic material direct current magnetic characteristic measurement experimental device | |
| CN101126798A (en) | Solenoid type specific susceptibility determinator | |
| Slavik et al. | Magnetic circuit of electromagnetic flow meter with capacitive electrodes | |
| CN103674349A (en) | Gauss theorem based open-loop magnetic flux sensor sensing method | |
| CN205230781U (en) | Three -phase current transformer's magnetism shielding structure based on air core coil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20150624 |
|
| EXPY | Termination of patent right or utility model |