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Structural and physical properties of spinel-type NiMn2–xCoxO4 oxides

✍ Scribed by O. Peña; Yanwei Ma; M. Bahout; P. Durán; C. Moure; M. N. Baibich; G. Martinez


Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
176 KB
Volume
1
Category
Article
ISSN
1862-6351

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The compounds CuCr 2 O 4 and NiCr 2 O 4 crystallize at room temperature in a tetragonal distorted spinel structure, s.g. I4 1 /amd, with axes ratio c/ao1 and 41, respectively. The distortion is caused by the Jahn-Teller ions Cu 2+ and Ni 2+ which flatten or elongate their surrounding oxygen tetrahed