Angular dependence of the FMR linewidth and the anisotropy of the relaxation time in iron garnets / Kobelev A. V.,Shvachko Yu. N.,Ustinov V. V. // PHYSICS OF METALS AND METALLOGRAPHY. - 2016. - V. 117, l. 1. - P. 9-15.

ISSN/EISSN:

0031-918X / 1555-6190

Type:

Article

Abstract:

This work is devoted to the problem of extracting the contribution of the anisotropy of relaxation to the angular dependence of the FMR linewidth and to the opportunity of determining the values of the parameters of relaxation. The results of the FMR study of films based on the yttrium iron garnet prepared by the method of liquid-phase epitaxy are given. The orientational dependence of the linewidth has been calculated using the traditional method of measuring an FMR spectrum and a method based on scanning at an angle to the resonance field for obtaining the minimum linewidth. A model for calculating the linewidth has been proposed that takes into account the anisotropy of the relaxation term in the equation of motion of the magnetic moment. The model leads to a dependence that agrees well with the experimental data, which makes it possible to state that the anisotropy of relaxation most likely takes place in the samples under consideration at the temperatures employed.

Author keywords:

ferromagnetic resonance; linewidth; iron garnets; anisotropy of relaxation SCANNING MAGNETIC-FIELDS; FERROMAGNETIC-RESONANCE; FILMS; WIDTH; LINE

DOI:

10.1134/S0031918X16010087

Web of Science ID:

ISI:000370189100002

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JAN
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1555-6190
Keywords-Plus	SCANNING MAGNETIC-FIELDS; FERROMAGNETIC-RESONANCE; FILMS; WIDTH; LINE
Research-Areas	Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Metallurgy \& Metallurgical Engineering
Author-Email	kobelev@imp.uran.ru
ResearcherID-Numbers	Ustinov, Vladimir/G-7501-2011
ORCID-Numbers	Ustinov, Vladimir/0000-0002-5155-7947
Funding-Acknowledgement	Ministry of Education and Science {[}NSh-1540.2014.2]
Funding-Text	The work was performed in the framework of the State task of the FANO of Russia (theme ``Spin,{''} no. 01201463330) and was supported in part by the Ministry of Education and Science (project no. NSh-1540.2014.2).
Number-of-Cited-References	31
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	7
Journal-ISO	Phys. Metals Metallogr.
Doc-Delivery-Number	DD8PL