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Nonstoichiometry and Its Effect on the Magnetic Properties of a Manganese‐Zinc Ferrite
Author(s) -
Inaba Hideaki
Publication year - 1995
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1995.tb09062.x
Subject(s) - stoichiometry , oxygen , ferrite (magnet) , manganese , zinc , materials science , lattice constant , permeability (electromagnetism) , analytical chemistry (journal) , chemistry , inorganic chemistry , metallurgy , composite material , membrane , physics , organic chemistry , chromatography , diffraction , optics , biochemistry
The effect of oxygen nonstoichometry on physical and magnetic properties of a Mn‐Zn ferrite has been studied by using annealed samples under various oxygen pressures and temperaure. The dependence of oxygen nonstoichiometry7 on disaccommodation and Fe 2+ content changed at the stoichiometric composition, and the lattice parameter became maximum at the stoichiometric composition. These results suggest that Mn‐Zn ferrites have two different defect structures: cation vacancies in cation‐deficient regons and oxygen vacancies in anion‐deficient regions. Initial permeability was maximum and power loss was minimum at the stoichiometric composition, suggesting he importance of the number of point defects for the magnetic properties.