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  • Title: Nonlinear power dependence of ferromagnetic resonance in NiFe/Pt/CoFeB trilayer.
    Author: Yafuso M, Miyazaki K, Takayama Y, Obinata S, Kimura T.
    Journal: J Phys Condens Matter; 2021 Nov 08; 34(4):. PubMed ID: 34525466.
    Abstract:
    The static and dynamic magnetization properties for a NiFe/Pt/CoFeB tri-layered film have been investigated. We find that the two ferromagnetic layers separated by a Pt spacer are ferromagnetically coupled even at room temperature. Moreover, the damping constant for the NiFe layer is found to show the significant enhancement with non-linear power dependence. These unique magnetic features observed in the NiFe layer can be understood by the weak ferromagnetism induced in the Pt spacer between two ferromagnetic layers.
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