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Ferromagnetic Resonance and the Ionic Composition of Cobalt Substituted Nickel Ferrite
Author(s) -
Pointon A. J.,
Robertson J. M.
Publication year - 1966
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.19660130111
Subject(s) - ferromagnetic resonance , laser linewidth , cobalt , ionic bonding , ferrite (magnet) , nickel , materials science , ferromagnetism , anisotropy , cobalt ferrite , nuclear magnetic resonance , condensed matter physics , composition (language) , analytical chemistry (journal) , chemistry , ion , metallurgy , magnetization , physics , magnetic field , composite material , laser , organic chemistry , chromatography , quantum mechanics , optics , linguistics , philosophy
A number of ferrites have been prepared with the nominal composition NiCo x Fe 2− x O 4 with x in the range 0 to 0.03. The ferromagnetic resonance linewidths of these ferrites have been investigated as a function of the conditions of preparation and of the cobalt content. An explanation of the variation of the linewidth, as corrected for the porosity broadening, is discussed in terms of the ionic composition of the ferrite. It is found that in order to obtain a complete explanation it appears necessary to postulate a cation disorder process which gives a positive contribution to the magnetic anisotropy constant K 1 .