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On the magnetic properties and the phase composition of the Cr 2 O 3 MnO x ‐system (2 ≥ x ≥ 1.5)
Author(s) -
Walter H.P.,
Scheve E.,
Mehandjiev D.
Publication year - 1974
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19744050313
Subject(s) - antiferromagnetism , chromium , ferromagnetism , rutile , magnetic susceptibility , lattice (music) , oxide , materials science , diffraction , solid solution , phase (matter) , chemical composition , manganese oxide , chemistry , crystallography , analytical chemistry (journal) , condensed matter physics , physics , metallurgy , organic chemistry , chromatography , acoustics , optics
Abstract The mixed oxide system Cr 2 O 3 MnO x (2 ≥ x ≥ 1.5) was investigated by X‐ray diffraction, by measurements of magnetic susceptibility, and by chemical determination of excess oxygen (B UNSEN'S method). The Presence of the antiferromagnetic oxides Cr 2 O 3 , β‐MnO 2 , α‐Mn 2 O 3 and a ferromagnetic phase Cr 1−y Mn y O 2 was stated. The formation of the latter with fourvalent chromium is explained by a lattice induction effect of the MnO 2 (rutile type).