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No.1(pp.1-52)
Home > Issues > Volume 12 (2007) > No.1(pp.1-52)
 
Experimental Evidence for New Pinning Conditions in Strongly Pinned Permalloy Film
Journal of Magnetics, Volume 12, Number 1, 31 Mar 2007, Pages 27-30
Kyung-Hunn Han* (Plasma Laboratory, J&L Tech), Jae-Hun Cho(Department of Physics, Inha University), Suk-Mock Lee(Department of Physics, Inha University)
Abstract

Experimental evidence suggests that spin pinning conditions for standing spin mode in polycrystalline Ni84Fe16alloy film, is confirmed using the four categories of Camley et al. and the value of q┴ for the pinning conditions, this was achieved by performing Brillouin light scattering measurements. The value of q┴ was observed, in order to increase at a rate of π/2 with an increasing mode number. With this condition, the coexistence of standing spin wave modes was shown, with intermediate pinning, in addition to free and strong pinning. The values for spin-wave-stiffness constant (DB), g-factor (g), and surface magnetization (4πM) of the Permalloy film were obtained from the results of BLS, and determined to be DB=1.85±0.05Oecm2,g= 2.11±0.02 , and 4πM=8.7 kG, respectively.


 
Keywords: Brillouin light scattering; permalloy film; surface anisotropy
DOI: 10.4283/JMAG.2007.12.1.27
Full Text: PDF
 
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