Temperature Dependences of Spin-Diffusion Lengths of Cu and Ru layers
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概要
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Ferromagnetic resonance (FMR) was measured in Cu/Ni80Fe20/normal-metal: NM ($d$)/Pt, Cu/Ni80Fe20/NM ($d$) films with various $d$ values to clarify the temperature dependence of spin-diffusion length induced by the precession of magnetization on Gilbert damping. The films were fabricated by rf magnetron sputtering. The out-of-plane angular dependences of FMR resonance field and linewidth were analyzed using a Landau–Lifshitz–Gilbert equation, and the Gilbert damping parameter $G$ of NiFe was obtained. The obtained spin-diffusion lengths $\lambda_{\text{SD}}$ were 350 and 950 nm at 300 and 4.5 K, respectively. The spin-flip probability of the Cu layer was obtained using the temperature dependence of FMR linewidth. These results were then compared with the calculated data of the temperature dependence of spin-diffusion length.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2006-05-15
著者
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MIZUKAMI Shigemi
College of Engineering, Nihon University
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Ando Yasuo
Department Of Applied Physics Graduate School Of Engineering Tohoku University
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Yakata Satoshi
Department Of Applied Physics Graduate School Of Engineering Tohoku University
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Miyazaki Terunobu
Department Of Applied Physics Faculty Of Engineering Tohoku University
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Mizukami Shigemi
College of Engineering, Nihon University, 1 Nakagawara, Tokkusada, Tamura-machi, Koriyama, Fukushima 963-1165, Japan
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Yakata Satoshi
Department of Applied Physics, Graduate School of Engineering, Tohoku University, Aoba-yama 05, Aramaki, Aoba-ku, Sendai 980-8579, Japan
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