Three-dimensional vector magnetic moment measuring instrument

A three-dimensional vector, magnetic moment measurement technology, applied in the field of magnetic moment measurement instruments, can solve the problems such as the inability to meet the needs of future development

Active Publication Date: 2016-04-13
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
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Problems solved by technology

The conventional magnetic moment measuring instrument can no longer meet the needs of future development

Method used

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  • Three-dimensional vector magnetic moment measuring instrument

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Embodiment Construction

[0033] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0034] figure 2 A structural diagram of a three-dimensional vector magnetic moment measuring instrument according to an exemplary embodiment of the present invention is shown. Such as figure 2 As shown, the three-dimensional vector magnetic moment measuring instrument 200 includes a vibrating unit 210 , which can reciprocate a sample rod 212 connected thereto along the Z-axis direction under the operation of a driving signal. A sample 214 is mounted at the distal end of the sample rod 212 and is in a magnetic field H applied in the X direction. Under the manipulation of the sample rod 212, the sample 214 performs simple harmonic vibration along the Z-axis direction, and the simple harmonic vibration can be expressed by the following equation 1 of motion:

[0035] Z=Z 0 sin(ωt)(1)

[0036] where Z represents the displacement of the sample 214 relat...

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Abstract

The invention relates to a three-dimensional vector magnetic moment measuring instrument. The three-dimensional vector magnetic moment measuring instrument may include a vibration unit for manipulating a sample rod and enabling a sample installed on the sample rod to vibrate in one direction, an external magnetic field applying unit used for applying an outer magnetic field to the sample, a firs induction coil group to a third induction coil group which are arranged around the sample and are used for measuring the three-dimensional components of the vector magnetic moment of the sample, and a signal processing unit which receives measurement signals from the firs induction coil group to the third induction coil group, and calculates the three-dimensional vector magnetic moment of the sample based on the measurement signals. According to the three-dimensional vector magnetic moment measuring instrument of the invention, the measurement signals of one or a plurality of detection coils in the firs induction coil group, the second induction coil group and the third induction coil group are combined in a parallel and series manner. The three-dimensional vector magnetic moment measuring instrument can realize synchronous measurement of the number and polarity of magnetic charges contained in the sample.

Description

technical field [0001] The invention generally relates to the field of magnetic moment measurement, and more particularly relates to a magnetic moment measuring instrument capable of directly measuring three-dimensional magnetic moment vectors. Background technique [0002] At present, the existing magnetic moment measurement systems mainly include vibrating sample magnetometer (VSM), superconducting quantum interferometer (SQUID), physical property measurement system (PPMS), etc., which have high measurement accuracy (up to 10 -7 emu), fast measurement speed, and large temperature range, it is widely used in basic research in universities and research institutes. However, these existing magnetic moment measurement systems generally can only measure the magnetic moment component of the sample along the direction of the applied magnetic field, but cannot measure the magnetic moment vector in three-dimensional space. [0003] figure 1 A block diagram of a typical vibrating s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/12
CPCG01R33/1215
Inventor 陆俊沈保根
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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