Journal
JOURNAL OF APPLIED PHYSICS
Volume 108, Issue 6, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3475646
Keywords
bismuth compounds; exchange interactions (electron); ferromagnetic materials; ferromagnetic resonance; garnets; lutetium compounds; Permalloy; perpendicular magnetic anisotropy; yttrium compounds
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Exchange coupling at the interface between a single-crystal garnet film with a perpendicular anisotropy and a Permalloy film with an in-plane anisotropy was investigated both experimentally and theoretically. Wide-band (2-20 GHz) ferromagnetic resonance measurements in parallel configuration reveal spectra with multiple resonance lines (up to four). These data were analyzed by means of a standing spin-wave model extended to account for in-plane/out-of-plane anisotropy bilayers and to include a finite value of the bilinear interfacial exchange coupling J. The field and frequency evolutions of the observed multiple resonance peaks were satisfactorily reproduced using the value J=0.18 +/- 0.05 erg/cm(2). (C) 2010 American Institute of Physics. [doi: 10.1063/1.3475646]
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