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Magnetic moment correction method

A correction method and magnetic moment technology, applied in the direction of the magnitude/direction of the magnetic field, magnetic performance measurement, measuring devices, etc., can solve the problems of cumbersome metal processing and difficulty in satisfying users, and achieve the effect of avoiding correction errors

Inactive Publication Date: 2020-04-28
ZHENGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the cumbersome metal processing of pure palladium and nickel, it is difficult to meet the needs of users with various forms of samples to be tested

Method used

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Embodiment Construction

[0028] The present invention will be fully described below in conjunction with specific examples.

[0029] The superconducting quantum interference magnetometer or vibrating sample magnetometer equipment currently used to measure the basic physical parameters of magnetic materials are collectively referred to below as magnetic measurement equipment. During the use of magnetic measuring equipment, there is an error problem between a single standard calibration sample and a variety of non-standardized samples to be tested. Magnetic moment calibration is to calibrate the magnetic measuring equipment with a magnetic calibration sample whose magnetic moment is known, so as to prepare for the accurate determination of the magnetic moment value of the sample to be tested.

[0030] We confirmed the influence of the error we mentioned in the actual measurement. We used steps S1 and S2 to prepare elliptical slices, rectangular slices and triangular slices, and used the calibrated superc...

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Abstract

The invention discloses a magnetic moment correction method. The method comprises the following steps: S1, manufacturing magnetic particles without magnetic moment anisotropy; S2, uniformly dispersingthe magnetic particles in a non-magnetic medium to manufacture a correction sample mixture; S3, obtaining a unit weight magnetic moment value of the correction sample mixture through measurement andcalculation; S4, manufacturing a correction sample from the correction sample mixture, measuring the weight of the correction sample, and calculating the magnetic moment value of the correction sample; S5, correcting a signal measured by magnetic measurement equipment by using the correction sample; and S6, measuring the signal value of the actual sample to be measured, and converting the signal value into the magnetic moment value of the actual sample to be measured through a correction result. In the invention, the magnetic particles without magnetic moment anisotropy are utilized and are mixed and sized with a sizing auxiliary material to manufacture the correction sample with a same or similar shape and size as the actual to-be-measured sample, and the correction sample is utilized tocorrect the magnetic measurement equipment so that correction errors caused by different shapes, sizes and positions of the actual to-be-measured sample and the correction sample are avoided.

Description

technical field [0001] The invention specifically relates to a magnetic moment correction method. Background technique [0002] The magnetic moment under various magnetic fields is a basic physical parameter for understanding magnetic materials, such as superconducting quantum interference magnetometer (SQUID, Superconducting Quantum Interference Device magnetometer), or vibrating sample magnetometer (VSM, Vibrating Sample Magnetometer) is a common The basic equipment used to measure magnetic materials has the problem of non-standardized calibration samples in the original magnetic moment calibration. Magnetic moment calibration is to use a magnetic calibration sample with known magnetic moment (with accurate magnetic moment value as a calibration reference) ) to calibrate the magnetic measuring equipment to prepare for the accurate measurement of the magnetic properties of the sample to be tested. [0003] In the reference NIST paper (J.Lindemuth; J.Krause; B.Dodrill, "Fin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00G01R33/02G01R33/12
CPCG01R33/02G01R33/12G01R35/005
Inventor 卫荣汉许雁雅
Owner ZHENGZHOU UNIV
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