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Investigation of the Structure of Ferromagnetic Films by Means of the Differential Susceptibility
Author(s) -
Kempter K.,
Hoffmann H.
Publication year - 1969
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.19690340123
Subject(s) - crystallite , condensed matter physics , magnetostriction , magnetocrystalline anisotropy , anisotropy , ferromagnetism , materials science , field (mathematics) , field dependence , nickel , constant (computer programming) , differential (mechanical device) , magnetic anisotropy , magnetization , thermodynamics , physics , magnetic field , metallurgy , mathematics , optics , quantum mechanics , computer science , pure mathematics , programming language
The differential susceptibility of thin polycrystalline iron–nickel‐films has been measured. From the results the structure constant, S , could be determined. The experiments gave the same field dependence for the susceptibility as was expected by former calculations. The values for S , evaluated from the experiment, can be explained quantitatively by the mean crystallite diameter, the magnetocrystalline anisotropy, the magnetostriction constants, and the intrinsic stresses, if one uses the Doyle‐Finnegan formula for the calculation. The measurements show quantitatively the existence of the intrinsic demagnetizing field, which has been predicted by micromagnetic calculations and which contributes to the whole effective field.