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Study of magnetization processes using higher harmonic ac‐susceptibility
Author(s) -
Prüfer S.,
Ziese M.
Publication year - 2008
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200844108
Subject(s) - magnetization , condensed matter physics , hysteresis , harmonic , amplitude , field (mathematics) , physics , gaussian , magnetic susceptibility , materials science , magnetic field , mathematics , optics , quantum mechanics , pure mathematics
The ac‐susceptibility of a La 0.7 Sr 0.3 MnO 3 epitaxial film was measured up to the 11th harmonic as a function of ac‐field amplitude, superimposed dc‐field and temperature. The experimental data reflect the magnetization hysteresis‐loop shape in a very precise and detailed way. This is further elucidated by numerical simulations of the ac‐susceptibility within a Preisach model with Gaussian distribution function. Using parameters from magnetization measurements the simulated ac‐susceptibility curves were found to be in good agreement with the experimental results. This shows that measurements of higher harmonic susceptibilities are a powerful tool for the precise study of magnetization processes. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)