Ferromagnetic Resonance Study of Annealed NiFe/FeMn/CoFe Trilayers

Title
Ferromagnetic Resonance Study of Annealed NiFe/FeMn/CoFe Trilayers
Authors
You, C.Y.
Keywords
Exchange bias, ferromagnetic resonance, FM/AFM/FM trilayer
Issue Date
2009-06
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Abstract
The effect of a thermal treatment on the exchange field in 19-nm NiFe(bottom)/15-nm FeMn/19-mn CoFe(top) trilayers has been investigated by employing a vibrating sample magnetometer (VSM) and a ferromagnetic resonance (FMR) spectrometer. FMR spectra as a function of applied dc field reveal that there are two distinct resonance peaks corresponding to each ferromagnetic layer. It is found that exchange fields determined from the in-plane angular dependence of the resonance field are in accord with that determined through the magnetic hysteresis loops for the NiFe/FeMn interface rather than the CoFe/FeMn one. A FMR linewidth broadening as a function of the annealing temperatures is attributed to the interdiffusion between the two magnetic interfaces across a FeMn layer.
URI
http://dspace.inha.ac.kr/handle/10505/1655
ISSN
0018-9464
Appears in Collections:
College of Natural Science(자연과학대학) > Physics (물리학) > Journal Papers, Peports(물리학 학술논문, 보고서)
Files in This Item:
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