Dynamics of the Magnetization Vector during the 180° Pulsed Magnetization Reversal of Ferrite–Garnet Films with Complex Anisotropy

The calculations and experimental studies have shown that the intensity of nonlinear magnetization oscillations arising during the process of 180 pulsed magnetization reversal of real ferrite-garnet films with biaxial anisotropy weakly depends on the magnetization reversal pulse Hp frontf duration (in contrast to magnetic materials with uniaxial anisotropy). The pulsed magnetization reversalcurve, which provides a visual representation of the magnetization reversal speed saturation caused by the influence of nonlinear magnetization oscillations, analyzed for the first time.

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Study of the Torque Acting on the Magnetization during 90° Pulsed Reversal Process in Ferrite-Garnet Films with In-Plane Anisotropy

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.233-234.490 ◽

2015 ◽

Vol 233-234 ◽

pp. 490-493 ◽

Cited By ~ 2

Author(s):

Oleg S. Kolotov ◽

Andrey V. Matyunin ◽

Georgiy M. Nikoladze ◽

Petr A. Polyakov

Keyword(s):

Time Dependence ◽

Magnetization Vector ◽

Operating Point ◽

Time Interval ◽

Pulse Front ◽

Ferrite Garnet ◽

Garnet Films ◽

Reversal Process ◽

Plane Anisotropy ◽

Front Duration

To calculate the torque acting on the magnetization vector during the process of 90° pulsed magnetization in real ferrite-garnet films in which, besides in-plane anisotropy, biaxial anisotropy is present, the method based on the analysis of the operating point trajectory is used. Analysis has shown that the shape of the time dependence of the torque Tφ in the time interval, within which the exciting of the magnetization oscillations occurs, is slightly dependent on the pulse front duration. As a result the magnetization oscillations (with a period of Tos ≅ 2 ns) can be observed at the pulse front duration τf ≥ 14 ns.

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Time Aspects of the 180° Pulsed Magnetization Reversal of Ferrite–Garnet Films with Complex Anisotropy

Bulletin of the Russian Academy of Sciences Physics ◽

10.3103/s1062873820020227 ◽

2020 ◽

Vol 84 (2) ◽

pp. 157-159

Author(s):

A. V. Matyunin ◽

G. M. Nikoladze ◽

P. A. Polyakov

Keyword(s):

Magnetization Reversal ◽

Ferrite Garnet ◽

Garnet Films

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

EPJ Web of Conferences ◽

10.1051/epjconf/201818502008 ◽

2018 ◽

Vol 185 ◽

pp. 02008

Author(s):

Oleg Kolotov ◽

Andrey Matyunin ◽

Georgiy Nikoladze ◽

Petr Polyakov

Keyword(s):

Magnetization Reversal ◽

External Fields ◽

Garnet Film ◽

Ferrite Garnet ◽

Garnet Films ◽

Reversal Process ◽

Plane Anisotropy ◽

Magnetization Reversal Process

The mode of 180° a 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).

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