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Dependence of Faraday effect on the orientation of terbium–scandium–aluminum garnet single crystal

Published online by Cambridge University Press:  03 March 2011

Y. Kagamitani ,
D.A. Pawlak ,
H. Sato ,
A. Yoshikawa ,
J. Martinek ,
H. Machida  and
T. Fukuda
Y. Kagamitani*
Affiliation:
Physical Chemistry of Luminescent Materials, Claude Bernard/Lyon University, CNRS UMR 5620, Villeurbanne, Cedex 69622, France
D.A. Pawlak
Affiliation:
Institute of Electronic Materials Technology, Wólczyñska 133, 01-919 Warsaw, Poland
H. Sato
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
A. Yoshikawa
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
J. Martinek
Affiliation:
Institute of Molecular Physics, Polish Academy of Sciences, ul. Smoluchowskiego 17, 60-179 Poznan, Poland; and Institut für Theoretische Festköperphysik, Universität Karlsruhe, 76128 Karlsruhe, Germany
H. Machida
Affiliation:
Tokin Co., 28-1 Hanashimashinden, Tsukuba, Ibaraki 305-0875, Japan
T. Fukuda
Affiliation:
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
*
a)Address all correspondence to this author. e-mail: kagamitani@pcml.univ-lyon1.fr
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Abstract

To investigate the directional dependence of the Faraday effect in terbium–scandium–aluminum garnet (TSAG) single crystals, grown by the Czochralski method, the Verdet constant was measured at 〈111〉, 〈110〉, and 〈100〉 orientations. Extinction ratio and magnetic susceptibility were measured. From the linear dependence of the Verdet constant and inverse wavelength square 1/λ2, 〈111〉 direction shows the highest value of Verdet constant (for λ⋅ = 649.1 nm, Vav = 8.256 × 10−3 deg · Oe−1 · cm−1). Significant anisotropy of magnetic susceptibility was not observed. The extinction ratio of TSAG shows the highest value for 〈111〉 orientation 38.7 dB, which implies that it can be used as an optical isolator.

Keywords

Crystal growthIsolatorMagneto-optical

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Type
Articles
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Journal of Materials Research , Volume 19 , Issue 2 , February 2004 , pp. 579 - 583
Copyright
Copyright © Materials Research Society 2004

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References

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