A device and method for detecting ferromagnetism and magnetization properties of materials

Abstract

The invention discloses a device used for material ferromagnetism and magnetization performance detection. The device comprises a laser device, linearly polarized light beams, a Glan-Thompson polarizer, an electromagnetic shielding cover, a radio frequency shielding box, a magnetic shielding cylinder, an axial scanning field coil, a heating and heat preservation module, atomic vapor bubbles, a light amplification detection module, a conveying tube sealing block, a conveying tube, a solenoid coil, a positioning frame and a grooved loading warehouse. The invention also discloses a method used for material ferromagnetism and magnetization performance detection. The device is integrated in structure and convenient to operate, material ferromagnetism and magnetization performance detection is acquired through nonlinear magneto-optical resonance dispersion signals, and the device has the characteristic of ultrahigh-sensitivity magnetic measurement and practical value in material selection of atomic frequency standards, atomic magnetometers and laser detection magnetic resonance instruments.

Description

technical field [0001] The present invention relates to the technical field of optical pumping and optical detection, more specifically to a device for detecting ferromagnetism and magnetization properties of materials, and also to a method for detecting ferromagnetism and magnetization properties of materials, specifically applicable to atomic frequency standards , Atomic magnetometer, laser detection magnetic resonance instrument and other instruments are selected, materials are screened, and the inhomogeneity of the magnetic field of the instrument system caused by the ferromagnetism or magnetization of the material is eliminated. Background technique [0002] With the development of science and technology, atomic frequency standards, atomic magnetometers, and laser detection magnetic resonance instruments are required to have higher precision, miniaturization, and better performance. Therefore, the performance of materials has an increasingly significant impact on the cha...

AI Technical Summary

Problems solved by technology

For example, for a vibrating sample magnetometer based on the principle of electromagnetic induction, the induced potential of the coil is proportional to the magnetization of the material to be tested. It cannot exceed ~g, thus limiting the test range of the magnetic properties of the material to be tested; the fluxgate magnetometer is usually used to detect the remanence of the material, and its sensitivity is relatively high, which can reach ~ nT, but it cannot detect the remanence below nT It is not suitable for ultra-weak magnetic detection of materials, and there is no function of testing magnetization

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