CN2857035Y - Mag netostriction and magnetic anisotropic - Google Patents
Mag netostriction and magnetic anisotropic Download PDFInfo
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- CN2857035Y CN2857035Y CN 200520130975 CN200520130975U CN2857035Y CN 2857035 Y CN2857035 Y CN 2857035Y CN 200520130975 CN200520130975 CN 200520130975 CN 200520130975 U CN200520130975 U CN 200520130975U CN 2857035 Y CN2857035 Y CN 2857035Y
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Abstract
A magnetostriction and magnetic anisotropy measuring device comprises a body, a central device and a main panel part. The main panel part comprises a panel, a pallet and a chassis which are spaced fixed to form the body frame by a screw and a nut, wherein a longitudinal magnetization coil is fixed between the panel and the pallet. The central device comprises a sample box which is winded with an inductance coil, a transverse magnetization coil and a differential magnetization coil, wherein the upper end and the lower end of the sample box are fixed between the panel and the pallet by fixing board. The main panel part comprises a sample holder arranged at the upper part of the panel, and a two-way switch, wherein the upper end of the sample is fixed on the sample holder by a fixing clamp. The utility model uses one apparatus to realize the measuring for two parameter that is to measure the magnetic anisotropy constant and saturation magnetostriction coefficient of tape magnetic material by using the approach saturation law in the magnetization curve and the small angle magnetic deflection method of the magnetization intensity vector of the sample.
Description
[technical field]: the utility model relates to the technical field of performance test of magnetic material, particularly a kind of device to magnetostriction coefficient and magnetic anisotropy constant measurement.
[background technology]: magnetic anisotropy and magnetostriction are used in the technology of magnetic characteristic research and magnetic material and are played an important role.Its application is very extensive, relates to civilian technology and military technological field.The device of measuring magnetic anisotropy at present mainly comprises: with the magnetization and the anisotropy of moment of torsion magnetometer research monocrystalline anisotropy and film; Measure magnetic anisotropy by ferromagnetic resonance and M ssbauer spectrum.The measurement of magnetostriction coefficient mainly comprises: the optical method Displacement Measurement; Deformation method Displacement Measurement, three terminal capacitor method Displacement Measurement.Above method all is one of them parameter of independent measurement, and the shape of measuring samples is also had different requirements.
[summary of the invention]: the utility model purpose is to solve the problem that prior art can only be carried out single parameter measurement, and a kind of magnetostriction and magnetic anisotropy measurement mechanism are provided.
Magnetostriction that the utility model provides and magnetic anisotropy measurement mechanism, by main part, center fixture part, and main panel partly form, wherein main part comprises panel, the supporting plate at middle part and the chassis of lower end of upper end, the three becomes main body frame by leading screw with the nut fixed interval, the longitudinal magnetization coil relies on supporting plate to be supported and fixed between panel and the supporting plate, the centre of panel and supporting plate respectively has the circular hole of and longitudinal magnetization internal coil diameter correspondence, and is formed for placing the path of center fixture and testing sample with the hollow space of longitudinal magnetization coil; Center fixture partly comprises sample box, twine inductive coil, cross magnetization coil and differential magnetizing coil on the sample box respectively, sample box is fixed between panel and the supporting plate by fixed head at two ends up and down, and sample is passed in the openings at two ends up and down by sample box, and two-way folder is installed in the sample lower end; Main panel partly comprises the panel in the main part, and the panel top is installed with a specimen holder by leading screw and nut, and the sample upper end is fixed on the specimen holder by geometrical clamp, and a two-way switch is installed on the panel simultaneously.
In order to guarantee that the magnetic field that the cross magnetization coil produces is not cancelled in sample box, two of the cross magnetization coil on the sample box separately is set on both sides on the sample box from the centre.
Advantage of the present utility model and effect: this device utilizes the method for the low-angle magnetic deflection of magnetization intensity vector in approach to saturation law and the sample in the magnetization curve to realize the mensuration of the magnetic anisotropy constant and the magnetostriction coefficient of banded magnetic material.Promptly realized the measurement of two parameters with an instrument.
[description of drawings]:
Fig. 1 is magnetostriction and magnetic anisotropy measurement mechanism one-piece construction synoptic diagram;
Fig. 2 is that main part is formed synoptic diagram;
Fig. 3 is that center fixture is partly formed synoptic diagram;
Fig. 4 is that main panel is partly formed synoptic diagram;
Fig. 5 is sample box and center fixture partial fixing structural representation.
[embodiment]:
Embodiment 1
As shown in Figure 1, this magnetostriction and magnetic anisotropy measurement mechanism, by main part, center fixture part, and main panel partly form, wherein main part (referring to Fig. 2) comprises panel 1, the supporting plate 6 at middle part and the chassis 7 of lower end of upper end, and the three becomes main body frame by leading screw 4 with nut 3 fixed interval.Wherein panel 1, supporting plate 6 are bakelite plate, and chassis 7 is a steel plate.(by rated current is that thick enameled wire coiling more than the 10A forms to longitudinal magnetization coil 5, external diameter is 20cm, internal diameter is 8cm) rely on supporting plate to be supported and fixed between panel and the supporting plate, the centre of panel and supporting plate respectively has the circular hole 2 of and longitudinal magnetization coil 5 internal diameter correspondences, and is formed for placing the path of center fixture and testing sample with the hollow space of longitudinal magnetization coil.
Center fixture part (referring to Fig. 3) comprises dumbbell shaped sample box 8 (sample box is that two ends respectively have a perforation up and down by the sticking hollow case of making of thin bakelite plate), and multilayer is evenly close around inductive coil 9 on sample box, and pin is drawn by sample box 8 tops; And then wearing cross magnetization coil 10, the lower end of pin is also drawn by sample box 8 tops; Last individual layer is close around differential magnetizing coil 11, and the lower end of pin is also drawn by sample box 8 tops.Inductive coil 9 is that the enameled wire coiling of 0.1mm forms by diameter; Transverse magnetic field coil 10 and differential magnetizing coil 11 are that the enameled wire coiling of 0.4mm forms by diameter.Wherein cross magnetization coil 10 coiling in advance is good, is not cancelled in order to guarantee the magnetic field that cross magnetization coil 10 produces in sample box, cross magnetization coil 10 two separately must be set on the sample box from the centre.So just guaranteed that the sample of placing obtains uniform magnetization in sample box 8.
Sample box up and down two ends promptly end to end portion 19 by fixed head 21 and on fixed orifice 20 and nut 14 be fixed on (referring to Fig. 1, Fig. 4, Fig. 5) between panel 1 and the supporting plate 6, sample is passed in the openings at two ends up and down by sample box, two-way folder 12 is installed in the sample lower end, and this two-way folder 12 is used for clamping sample and hangs weight tray (referring to Fig. 1, Fig. 3).
Main panel part (referring to Fig. 4) comprises the panel 1 in the main part, the panel upper fixed is equipped with a specimen holder 15 (specimen holder is fixedly formed by nut, leading screw, wooden unit), the sample upper end is fixed on the specimen holder 15 by geometrical clamp 16 (a veneer piece), bolt 18, and a two-way switch 17 (being used for the handover measurement function) is installed on the panel simultaneously.
Magnetostriction and magnetic anisotropy measurement mechanism use principle are as follows:
One, the assembling of instrument:
Main body frame and longitudinal magnetization coil (as shown in Figure 2) are put on the horizontal bed; Center fixture (as shown in Figure 3) is put into the hollow space center of longitudinal magnetization coil 5, be fixed on panel 1 and the supporting plate 6 with center fixture hold-down nut 14; Cross magnetization coil 10, differential magnetizing coil 11 are received respectively on the both sides binding post of two-way switch 17.
Required other supplementary instruments in the measurement: lock-in amplifier, direct supply, digital DC reometer, Digital AC reometer, slide rheostat, single-pole switch, lead are some, pallet and counterweight; Direct supply, digital DC reometer, slide rheostat, single-pole switch, some, the magnetizing coil 5 composition series circuits of lead, receive on the central binding post of two-way switch 17 after the signal output part of lock-in amplifier, the series connection of Digital AC reometer, inductive coil 9 is received the input end of lock-in amplifier.
Two, measuring principle:
Magnetostrictive mensuration is according to magnetization vector small angle deflection principle, being about to the bar carry sample is magnetized into saturated by longitudinal magnetization coil 5, one AC signal is provided for the cross magnetization coil by the output terminal of lock-in amplifier simultaneously, the cross magnetization coil will produce a horizontal faint alternating magnetic field to be measured carry sample place, thereby make the saturation magnetic moment that is magnetized into saturated bar carry sample that one small angle deflection take place.Adding a counterweight in bar carry sample lower end to be measured makes it be subjected to a stress, because magnetostrictive effect will make the deflection angle change of saturation magnetic moment, survey its induced voltage by lock-in amplifier, employing reduces or increases the variation that saturated magnetization field way compensates the induced voltage that stress causes, and then can record the saturation magnetostriction coefficient of material.
The mensuration of magnetic anisotropy realizes according to the polycrystal law that approaches to saturation.Also be the bar carry sample to be magnetized into by longitudinal magnetization coil 5 approach to saturation, one AC signal is provided for differential magnetizing coil 11 by the output terminal of lock-in amplifier simultaneously, make the differential magnetizing coil produce a faint vertical alternating magnetic field, action of alternating magnetic field makes the magnetic moment of testing sample that one faint variation take place and then causes the variation of induced voltage on testing sample.Input end measuring induced voltage by lock-in amplifier is with the variation of the magnetizing field that approaches to saturation, and can obtain magnetic susceptibility with a variation relation that approaches to saturation, and then can calculate the constant relevant with magnetic anisotropy.
In measuring process, measuring the required saturation field of the saturation magnetostriction and the law that approaches to saturation mensuration magnetic anisotropy provides by longitudinal magnetization coil 5 connection direct supplys.Change the size of magnetizing field by the output of regulating direct supply.Receive with the output terminal of lock-in amplifier on the central binding post of two-way switch 17, a faint alternating signal is provided for respectively cross magnetization coil 10 and differential magnetizing coil 11, when measuring magnetostriction two-way switch is dialled to horizontal magnetizing coil; When measuring magnetic anisotropy two-way switch is dialled to the differential magnetizing coil.
Claims (2)
1, a kind of magnetostriction and magnetic anisotropy measurement mechanism, it is characterized in that this device is by main part, the center fixture part, and main panel is partly formed, wherein main part comprises the panel of upper end, the supporting plate at middle part and the chassis of lower end, the three becomes main body frame by leading screw with the nut fixed interval, the longitudinal magnetization coil relies on supporting plate to be supported and fixed between panel and the supporting plate, the centre of panel and supporting plate respectively has the circular hole of and longitudinal magnetization internal coil diameter correspondence, and is formed for placing the path of center fixture and testing sample with the hollow space of longitudinal magnetization coil; Center fixture partly comprises longitudinal magnetic field coil and sample box, twine inductive coil, transverse magnetic field coil and differential magnetizing coil on the sample box respectively, sample box is fixed between panel and the supporting plate by fixed head at two ends up and down, sample is passed in the openings at two ends up and down by sample box, and two-way folder is installed in the sample lower end; Main panel partly comprises the panel in the main part, and the panel top is installed with a specimen holder by leading screw and nut, and the sample upper end is fixed on the specimen holder by geometrical clamp, and a two-way switch is installed on the panel simultaneously.
2, magnetostriction according to claim 1 and magnetic anisotropy measurement mechanism is characterized in that two of the transverse magnetic field coil on the sample box separately is set on both sides on the sample box from the centre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520130975 CN2857035Y (en) | 2005-12-28 | 2005-12-28 | Mag netostriction and magnetic anisotropic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520130975 CN2857035Y (en) | 2005-12-28 | 2005-12-28 | Mag netostriction and magnetic anisotropic |
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| CN2857035Y true CN2857035Y (en) | 2007-01-10 |
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| CN 200520130975 Expired - Fee Related CN2857035Y (en) | 2005-12-28 | 2005-12-28 | Mag netostriction and magnetic anisotropic |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101118277B (en) * | 2007-08-24 | 2010-04-14 | 北京航空航天大学 | Magnetic striction material dynamic parameter testing system |
| CN102252914A (en) * | 2011-05-09 | 2011-11-23 | 兰州大学 | Magnetomechanical coupling air pressure-loading system in low temperature environment |
| CN102353916A (en) * | 2011-05-31 | 2012-02-15 | 哈尔滨工业大学 | Device and measuring method for measuring magnetoconstriction coefficient through multi-beam laser heterodyne secondary harmonic method |
| CN102890252A (en) * | 2012-09-26 | 2013-01-23 | 中国科学院宁波材料技术与工程研究所 | Method for measuring flexible magnetic film saturated magnetostriction coefficient |
| CN104035058A (en) * | 2014-06-09 | 2014-09-10 | 浙江大学 | Device and method for parameter characteristic testing of magnetostrictive material |
| CN104155618A (en) * | 2014-08-18 | 2014-11-19 | 哈尔滨翔科新材料有限公司 | No damage test device of permanent magnet magnetic field intensity |
-
2005
- 2005-12-28 CN CN 200520130975 patent/CN2857035Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101118277B (en) * | 2007-08-24 | 2010-04-14 | 北京航空航天大学 | Magnetic striction material dynamic parameter testing system |
| CN102252914A (en) * | 2011-05-09 | 2011-11-23 | 兰州大学 | Magnetomechanical coupling air pressure-loading system in low temperature environment |
| CN102353916A (en) * | 2011-05-31 | 2012-02-15 | 哈尔滨工业大学 | Device and measuring method for measuring magnetoconstriction coefficient through multi-beam laser heterodyne secondary harmonic method |
| CN102890252A (en) * | 2012-09-26 | 2013-01-23 | 中国科学院宁波材料技术与工程研究所 | Method for measuring flexible magnetic film saturated magnetostriction coefficient |
| CN102890252B (en) * | 2012-09-26 | 2015-10-14 | 中国科学院宁波材料技术与工程研究所 | A kind of measuring method of flexible magnetic film saturation magnetostriction constant |
| CN104035058A (en) * | 2014-06-09 | 2014-09-10 | 浙江大学 | Device and method for parameter characteristic testing of magnetostrictive material |
| CN104035058B (en) * | 2014-06-09 | 2016-08-31 | 浙江大学 | Magnetostriction materials parameter characteristic test devices and methods therefor |
| CN104155618A (en) * | 2014-08-18 | 2014-11-19 | 哈尔滨翔科新材料有限公司 | No damage test device of permanent magnet magnetic field intensity |
| CN104155618B (en) * | 2014-08-18 | 2017-02-01 | 哈尔滨翔科新材料有限公司 | No damage test device of permanent magnet magnetic field intensity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |