Tunable ferromagnetic resonance in NiFe nanowires with strong magnetostatic interaction

Xiaoming Kou; Xin Fan; Hao Zhu; Xiao, John Q.
March 2009
Applied Physics Letters;3/16/2009, Vol. 94 Issue 11, p112509
Academic Journal
Magnetic materials with tunable ferromagnetic resonant (FMR) frequencies are highly desirable in microwave devices. In this manuscript, we demonstrate that the natural FMR of Ni90Fe10 nanowire array can be tuned continuously from 8.2 to 11.7 GHz by choosing different remanent states. Theoretical model based on magnetostatic interaction among nanowires has been developed to explain the observed phenomena.


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