BRILLOUIN LIGHT-SCATTERING STUDY OF THE SPIN-WAVE STIFFNESS PARAMETER IN SC-SUBSTITUTED LUTETIUM-YTTRIUM IRON-GARNET

被引：4
作者：
BOOTH, JG
SRINIVASAN, G
PATTON, CE
DEGASPERIS, P
机构：
[1] COLORADO STATE UNIV,DEPT PHYS,FT COLLINS,CO 80523
[2] CNR,INST ELETTRON STATO SOLIDI,I-00156 ROME,ITALY
来源：
IEEE TRANSACTIONS ON MAGNETICS | 1987年 / 23卷 / 05期
关键词：
CRYSTALS - Epitaxial Growth - LIGHT - Brillouin Scattering - MAGNETOOPTICAL EFFECTS - QUANTUM THEORY;
D O I：
10.1109/TMAG.1987.1065535
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The spin wave exchange stiffness coefficient has been measured for a series of Sc substituted lutetium-yttrium iron garnet (YIG) liquid phase epitaxy thin film. The exchange determinations were based on magnetization data and spin wave dispersion measurements by Brillouin light scattering. Scandium substitution results in a rapid decrease in the exchange stiffness from the value for pure YIG; the stiffness decreases to zero at approximately y equals 1. The observed variation of the exchange stiffness as a function of y is in general agreement with theory and with previous microwave data.
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页码：3494 / 3496
页数：3
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