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Device for synchronous testing of magnetic property of magnetoelectric material

A technology of magnetoelectric materials and synchronous testing, which is used in magnetic performance measurement, magnetostrictive performance measurement, hysteresis curve measurement, etc. problems, to achieve the effect of shortening the test time, easy operation and simple installation

Inactive Publication Date: 2013-10-09
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The static method has high requirements on the impedance of the equipment, the measurement process is unstable, and there are few users; the magnetic field of the pulse field method changes too rapidly, so it is not suitable for simultaneous testing with other test items

Method used

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  • Device for synchronous testing of magnetic property of magnetoelectric material
  • Device for synchronous testing of magnetic property of magnetoelectric material
  • Device for synchronous testing of magnetic property of magnetoelectric material

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Embodiment Construction

[0022] The following embodiments will further illustrate the present invention in conjunction with the drawings.

[0023] See figure 1 , The embodiment of the present invention is provided with an electromagnet 2, a DC power supply 1, a signal generator 5, a shielding cover 14, a Helmhertz coil 3, a lock-in amplifier 6, a Hall probe 11, a detection coil 12, a flux meter 9, a Gaussian Gauge 8, strain gauge 13, strain gauge 10, data acquisition device 7, computer 15;

[0024] The electromagnet 2 is driven by the DC power supply 1, the Helmhertz coil 3 is placed in the magnetic gap of the electromagnet 2, the sample 4 is placed in the Helmhertz coil 3, the synchronous output terminal of the signal generator 5 and the reference of the lock-in amplifier 6 The signal input terminal is connected, the magnetoelectric signal output terminal of sample 4 is connected to the input interface of the lock-in amplifier 6, the output terminal of the lock-in amplifier 6 is connected to the input ter...

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Abstract

The invention discloses a device for synchronous testing of the magnetic property of a magnetoelectric material and relates to testing of the magnetoelectric material. The device for synchronous testing of the magnetic property of the magnetoelectric material comprises an electromagnet, a direct current power supply, a signal generator, a shielding cover, a Helmholtz coil, a lock-in amplifier, a Hall probe, an exploring coil, a fluxmeter, a gauss meter, a strain gauge, a strain meter, a data acquisition unit and a computer, wherein the Helmholtz coil is placed in the magnetic gap of the electromagnet, the output end of the signal generator is connected with the input end of the lock-in amplifier, the magneto-electricity signal output end of a sample is connected with an input interface of the lock-in amplifier, the output end of the lock-in amplifier is connected with the input end of the data acquisition unit, the output end of the gauss meter is connected with the input end of the data acquisition unit, the output end of the fluxmeter is connected with the input end of the data acquisition unit, the strain meter is connected with the input end of the data acquisition unit, the Hall probe is placed near the sample and is connected to the gauss meter, the exploring coil is wound around the sample, the output end of the exploring coil is connected with the input end of the fluxmeter, and the strain gauge is attached to the surface of the sample and is connected with the strain meter.

Description

Technical field [0001] The invention relates to the test of magnetoelectric materials, in particular to a synchronous test device for the magnetic properties of magnetoelectric materials. Background technique [0002] The hysteresis loop is the change curve of the magnetic induction intensity of the material with the magnetic field. The hysteresis effect refers to the phenomenon that the hysteresis loop will not return to the original path when the magnetization reaches the saturation of the ferromagnetic body when the external magnetic field decreases. Because different materials have different magnetic domain structures and their movement modes, the hysteresis effect is also different. According to the shape of the hysteresis loop of the material, the material can be divided into soft magnetic material, hard magnetic material, rectangular magnetic material and so on. The hysteresis loop reflects the macroscopic magnetization behavior of magnetic materials and is the most basic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/12G01R33/14G01R33/18
Inventor 施展邓数文陈来柱佟永帅薛昊杨水源卢勇王翠萍刘兴军张锦彬黄艺雄
Owner XIAMEN UNIV
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