Abstract
The chemical composition of Cu y Cr2Se4−z Br x spinels depends strongly on the preparation parameters. Spinels with 0.8≲y≲1.2, 0.5≲x≲2, and 0≲z−x≲0.2 have been prepared. Whereas the lattice constanta o of these spinels differs only by less than approximately 0.6%, their Curie temperatureT c depends sensitively on the spinel composition. For Cu1.1Cr2Se3.4Bro.46,a o=1.0410 nm andT c=310 K were found to compared witha 0=1.0447 nm andT c=84 K of CuCr2Se2Br2.
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Pink, H., Unger, W.K., Schäfer, H. et al. Preparation, stoichiometry and magnetic properties of Cu y Cr2Se4−z Br x spinels with 0.5≲x≲2. Appl. Phys. 4, 147–151 (1974). https://doi.org/10.1007/BF00884270
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DOI: https://doi.org/10.1007/BF00884270