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Spin Pumping in Polycrystalline Magnetic Insulator/Metal Pt Films

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5 Author(s)
Kajiwara, Y. ; Inst. for Mater. Res., Tohoku Univ., Sendai, Japan ; Ando, K. ; Nakayama, H. ; Takahashi, R.
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In this paper, we demonstrate the spin pumping, spin current generation from magnetization dynamics, at an interface between metal Pt and polycrystalline magnetic insulator BixY3-xFe5O12 (x=0 and 1) prepared by the metal-organic decomposition method. We measured the electromotive force due to the inverse spin-Hall effect induced by the spin pumping in a polycrystalline Y3Fe5O12/Pt and a polycrystalline BiY2Fe5O12/Pt films. We found that spin mixing conductance estimated from the magnitude of the electromotive force for the BiY2Fe5O12/Pt is much greater than that for the Y3Fe5O12/Pt.

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Magnetics, IEEE Transactions on  (Volume:47 ,  Issue: 10 )