Studies of the ferrimagnetic resonance relaxation for hexagonal ferrites

Author

Marshall, S. ; Sokoloff, J.B. ; Vittoria, C.

Author_Institution

Northeastern Univ., Boston, MA, USA

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

3491

Lastpage

3493

Abstract

The Kasuya-LeCraw two-magnon-one-phonon process, which is generally considered to be the primary mechanism responsible for the intrinsic ferrimagnetic resonance linewidth of perfect single crystal ferrites, is studied, taking into account the effects of the local magnetic ion symmetry on the magnon-phonon interaction coupling strength. It is shown that octahedral symmetry sites will not contribute to the coupling, but the tetrahedral and trigonal sites will. The results are used to estimate the FMR linewidth for both YIG and barium ferrite

Keywords

barium compounds; ferrimagnetic resonance; ferrites; garnets; phonon-magnon interactions; spectral line breadth; yttrium compounds; BaFe₁₂O₁₉; FMR linewidth; Kasuya-LeCraw two-magnon-one-phonon process; YFe5O12; YIG; ferrimagnetic resonance relaxation; intrinsic ferrimagnetic resonance linewidth; local magnetic ion symmetry; magnon-phonon interaction coupling strength; octahedral symmetry; single crystal ferrites; Anisotropic magnetoresistance; Barium; Equations; Ferrimagnetic materials; Ferrites; Frequency; Iron; Magnetic anisotropy; Magnetic resonance; Phonons;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.42345

Filename

42345