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On the Magnetic Relaxation of Iron‐Rich Ferrites in the Temperature Range 300 to 450 °C
Author(s) -
Maxim Gh.
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.19690350120
Subject(s) - spinel , atmospheric temperature range , anisotropy , ion , relaxation (psychology) , materials science , lattice (music) , magnetic relaxation , diffusion , range (aeronautics) , magnetic anisotropy , condensed matter physics , nuclear magnetic resonance , chemistry , analytical chemistry (journal) , magnetization , magnetic field , metallurgy , thermodynamics , physics , psychology , social psychology , organic chemistry , chromatography , quantum mechanics , acoustics , composite material
Using the induced anisotropy, the magnetic relaxation effect of Me x Fe 3−x O 4 + γ ferrites is investigated in the temperature region 300 to 450 °C. It is shown that this effect appears only in the Mn‐Fe and Zn‐Fe ferrites. At small concentrations ( x < 0.1) the induced anisotropy is proportional to the concentration of Mn and Zn ions, respectively. It is presumed that this relaxation effect is caused by the directional ordering of some configurations of Mn and Zn ions, respectively, on the tetrahedral sites of the spinel lattice. The ordering is produced by cation diffusion via vacancies.