Domain and domain wall transition spectroscopy

摘要

This invention involves resonance enhancement of signals obtained from magnetic specimen undergoing changes in magnetic state. This is accomplished by placing the sample, magnetized by a quasi-static magnetic field, in a high frequency resonant cavity. By adjusting the resonance frequency of the sample-containing cavity so that it is resonant at a d.c. field corresponding to domain wall motion or domain rotation, clear signals can be obtained from the sample.