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Tuning of magnetization relaxation in ferromagnetic thin films through seed layers

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7 Author(s)
Lu, Lei ; Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA ; Young, Jared ; Wu, Mingzhong ; Mathieu, C.
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Tuning of the magnetization relaxation in Fe65Co35 thin films via seed layers was demonstrated. Through the use of different types of seed layers, one can tune substantially both the magnitude and frequency dependence of the relaxation rate η of the film. This tuning relies on the change of the film grain properties with the seed layer and the correlation between grain properties and two-magnon scattering processes. In spite of a significant change of η with the seed layer, the film static magnetic properties remain relatively constant.

Published in:

Applied Physics Letters  (Volume:100 ,  Issue: 2 )