Method for measuring ferromagnetic resonance line width of yttrium iron garnet material

Abstract

The invention belongs to the field of microwave ferrite material measurement, relates to ferromagnetic resonance line width measurement of an yttrium iron garnet material, and particularly provides a ferromagnetic resonance line width measurement method of the yttrium iron garnet material. The method is used for solving the problems of difficulty in spherical sample preparation, inaccurate material performance parameter extraction and the like existing in a traditional resonant cavity perturbation method for ferromagnetic resonance line width measurement of ferrite materials such as yttrium iron garnet and the like. The line width testing method based on the vector network ferromagnetic resonance technology is introduced into ferromagnetic resonance line width measurement of the yttrium iron garnet ferrite material for the first time, and a vector network ferromagnetic resonance (VNA-FMR) measurement system is designed to be an S-shaped coplanar waveguide with a center conductor signal line in an S shape in a matched mode for a blocky sample of the yttrium iron garnet material. The measurement of the ferromagnetic resonance line width of the yttrium iron garnet material is realized, and the accuracy and reliability of the measurement result are effectively improved.

Description

A method for measuring ferromagnetic resonance linewidth of yttrium iron garnet material technical field The invention belongs to the microwave ferrite material measurement field, relate to the ferromagnetic resonance linewidth measurement of yttrium iron garnet material Specifically, a method for measuring ferromagnetic resonance linewidth of yttrium iron garnet ferrite material based on a vector network analyzer is provided. Background technique Multifunctional integrated microwave electronic devices have attracted extensive attention in recent decades, especially polycrystalline ferrites. High potential for some electromagnetic devices in the radio frequency region; one of the main properties of microwave ferrites is ferromagnetic resonance (FMR) phenomenon, ferromagnetic resonance test is the most commonly used method to characterize the magnetic and magnetization dynamics of materials, and has been widely used For the characterization of dynamic and static magne...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a vector-based The ferromagnetic resonance line width measurement method of the yttrium iron garnet ferrite material of the network analyzer; the present invention introduces the line width test method based on the Yanet ferromagnetic resonance technology into the ferromagnetic resonance line width of the yttrium iron garnet ferrite material for the first time During the measurement, the accuracy and reliability of the measurement results are effectively improved

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