Longitudinal spin Seebeck effect in various garnet ferrites

被引：101
|
作者：
Uchida, K. [1 ,2 ]
Nonaka, T. [1 ]
Kikkawa, T. [1 ]
Kajiwara, Y. [1 ]
Saitoh, E. [1 ,3 ,4 ,5 ]
机构：
[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
[2] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan
[3] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan
[4] Japan Sci & Technol Agcy, CREST, Tokyo 1020076, Japan
[5] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
来源：
PHYSICAL REVIEW B | 2013年 / 87卷 / 10期
关键词：
CALORITRONICS; FERROMAGNET; TORQUE;
D O I：
10.1103/PhysRevB.87.104412
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The longitudinal spin Seebeck effect (LSSE) is investigated in various garnet ferrites Y3-xRxFe5-yMyO12 (R = Gd, Ca; M = Al, Mn, V, In, Zr) by means of the inverse spin Hall effect in Pt films. The magnitude of the LSSE voltage in the Pt/Y3-xRxFe5-yMyO12 samples is found to be enhanced with increasing concentration of Fe in the garnet ferrites, which can be explained by a change in the spin-mixing conductance at the Pt/Y3-xRxFe5-yMyO12 interfaces. We also investigate the dependence of the LSSE voltage on macroscopic magnetic parameters of Y3-xRxFe5-yMyO12. The experimental results show that the LSSE voltage in the Pt/Y3-xRxFe5-yMyO12 samples has a positive correlation with the Curie temperature and the saturation magnetization, but no clear correlation with the gyromagnetic ratio and the Gilbert damping constant of the samples. DOI: 10.1103/PhysRevB.87.104412
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页数：6
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