Title :
Microwave and DC anisotropy fields of exchange-coupled CoFe/PtMn/CoFe trilayers
Author :
Pettiford, C.I. ; Zeltser, A. ; Yoon, S. ; Harris, V. ; Vittoria, C. ; Sun, N.
Author_Institution :
Northeastern Univ., Boston
Abstract :
In this paper, the authors examined the ferromagnetic resonance (FMR) characteristics of CoFe/PtMn/CoFe trilayer thin films to determine mechanisms behind the intermediate drop in linewidth observed, and investigate the exchange bias fields (Hex) at DC versus at X-band (9.5 GHz). Results showed that the FMR linewidth did not drop monotonically with the increase of FM thickness in the exchange coupled trilayers. This non-monotonic FMR linewidth drop could be utilized in integrated microwave magnetic materials for RF and microwave devices.
Keywords :
cobalt alloys; exchange interactions (electron); ferromagnetic materials; ferromagnetic resonance; iron alloys; magnetic anisotropy; magnetic multilayers; manganese alloys; microwave materials; platinum alloys; CoFe-PtMn-CoFe; DC anisotropy fields; FMR linewidth; exchange bias fields; exchange coupled trilayers; ferromagnetic resonance; ferromagnetic thin films; frequency 9.5 GHz; integrated microwave magnetic materials; Anisotropic magnetoresistance; Couplings; Magnetic anisotropy; Magnetic field measurement; Magnetic films; Magnetic resonance; Microwave magnetics; Microwave measurements; Perpendicular magnetic anisotropy; Radio frequency;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.374992
