Full-automatic measurement device for magnetoelectric properties of magnetoelectric material and measuring method thereof

A technology of magnetoelectric materials and measuring devices, which is applied in the direction of magnetic field measurement, magnetic field size/direction, etc. by using electromagnetic devices, can solve the problems of increasing equipment cost, accuracy, insufficient frequency upper limit, and high cost, so as to improve measurement accuracy , working frequency expansion, cost reduction effect
CN101034144AInactive Publication Date: 2007-09-12UNIV OF SCI & TECH BEIJING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF SCI & TECH BEIJING
Publication Date
2007-09-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention belongs to magnetic electricity material domain, which conretely relates to using fictitious multichannel phase-locking enlarging principle to implement test material magnetic electricity function method and device of computer control. This invention make phase-locking amplifier fictitious, which is that computer software implements function of phase-locking amplifier. It is very convenient to carry out phase-locking agnification process for random multipath signal by using fictitious phase-locking amplifier. Therefore, it not only precisely automatically survey dE and dH, improve magnetic electricity function measurement precision, but also work frequency limit is boosted a lot compared to hardware phase-locking amplifier, meanwhile decrease manufacture cost of magnetic electricity measuring device. This invention also combines control and measurement of apposition cocurrent offset magnetic field to boost automaticity of magnetic electricity measuring device, thereby improve precision and efficiency of magnetic electricity measurement.
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Description

technical field

[0001] The invention belongs to the field of magnetoelectric materials, and relates to a measurement technology of magnetoelectric properties of magnetoelectric materials, in particular to a fully computer-controlled device for measuring magnetoelectric properties of magnetoelectric materials and a measurement method thereof realized by using the principle of virtual multi-channel phase-locked amplification. Background technique

[0002] Magnetoelectric properties refer to the dielectric polarization of a material induced by an external magnetic field, or the magnetization induced by an external electric field. Generally speaking, the magnetoelectric properties refer to the magnetic field-induced dielectric polarization unless otherwise specified. Magnetoelectric properties have broad application prospects in many high-performance magnetoelectric functional components. Specifically, it can be used in many fields such as magnetic field detection, magnetoelectr...

Claims

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