Study of torque acting on magnetization during 180° pulsed reversal process in ferrite-garnet films with biaxial anisotropy

Abstract

Abstract. The mode of 180 pulsed magnetization reversal process of ferrite-garnet films with in-plane anisotropy in the external fields region, in which the mechanism of the homogeneous rotation of magnetization takes place, was firstly investigated. Analysis of calculated and experimental longitudinal signals showed that the presence of biaxial anisotropy in real ferrite-garnet film leads to the occurrence of nonlinear damped magnetization oscillations (with a period of the main harmonic of ~1.5 ns).To calculate the torque acting on the magnetization during the 180° pulsed reversal process in real ferritegarnet films, in which besides in-plane anisotropy biaxial anisotropy is present, the method based on the analysis of the trajectory of an operating point is used