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An X‐ray diffraction study of magnetostriction in Zn 1− x Cu x Cr 2 Se 4 (0·2< x <1·0)
Author(s) -
Kusz J.,
Juszczyk S.,
Warczewski J.
Publication year - 1988
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889888005151
Subject(s) - magnetostriction , curie temperature , diffraction , atmospheric temperature range , lattice constant , materials science , powder diffraction , x ray crystallography , x ray , analytical chemistry (journal) , condensed matter physics , lattice (music) , crystallography , chemistry , thermodynamics , magnetic field , ferromagnetism , physics , optics , chromatography , quantum mechanics , acoustics
The temperature dependence of the lattice parameter a of the powder samples of the mixed spinels Zn 1− x Cu x Cr 2 Se 4 was measured in the temperature range 100–570 K by the X‐ray powder diffraction technique. The temperature dependence of the magnetostriction was observed from these results. For x = 1.0, 0.9, 0.8, 0.3 and 0.2 the spontaneous magnetostriction ω turned out to be positive and dependent on temperature. Based on the molecular field approximation the pressure coefficients of the Curie temperature d T c /d p were estimated.