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Ferromagnetic Resonance in Single Crystal Bismuth Iron Garnet Films

Published online by Cambridge University Press:  10 February 2011

V. Denysenkov ,
A. Jalali-Roudsar ,
N. Adachi ,
S. Khartsev ,
A. Grishin  and
T. Okuda
V. Denysenkov
Affiliation:
Department of Condensed Matter Physics, Royal Institute of Technology, S- 100 44 Stockholm, Sweden
A. Jalali-Roudsar
Affiliation:
Department of Condensed Matter Physics, Royal Institute of Technology, S- 100 44 Stockholm, Sweden
N. Adachi
Affiliation:
Department of Condensed Matter Physics, Royal Institute of Technology, S- 100 44 Stockholm, Sweden Nagoya Institute of Technology, Nagoya 466, Japan
S. Khartsev
Affiliation:
Department of Condensed Matter Physics, Royal Institute of Technology, S- 100 44 Stockholm, Sweden
A. Grishin
Affiliation:
Department of Condensed Matter Physics, Royal Institute of Technology, S- 100 44 Stockholm, Sweden
T. Okuda
Affiliation:
Nagoya Institute of Technology, Nagoya 466, Japan
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Abstract

Among other magneto-optic materials bismuth substituted yttrium iron garnet (BixY1−x)3 Fe5O12 has the highest Faraday rotation effect in visible region. Completely substituted bismuth iron garnet Bi3Fe5O12 (BIG) films have been grown by pulsed laser deposition technique onto (111) (NdGd)3(ScGa)5O12 single crystal with lattice constant of 12.623 Å. X-ray diffraction proves epitaxial film quality. VSM measurements yield the saturation magnetization 4πMs, = 1100 G and coercive field is about 50 Oe. Ferromagnetic resonance (FMR) method reveals perpendicular magnetic anisotropy in fabricated films. Angular measurements of FMR give the constants of uniaxial and cubic anisotropy in BIG film: Ku = 5.9×104 erg/cm3 and K1= - 6.95×103 erg/cm3. The Faraday rotation has been found to reach - 7.8 deg/µm at 630 nm.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 603: Symposium KK – Materials Issues for Tunable RF & Microwave Devices , 1999 , 107
Copyright
Copyright © Materials Research Society 2000

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