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Half-Magnetization Plateaux in Cr Spinels

✍ Scribed by N. Shannon; H. Ueda; Y. Motome; K. Penc; H. Shiba; H. Takagi


Publisher
John Wiley and Sons
Year
2007
Weight
18 KB
Volume
38
Category
Article
ISSN
0931-7597

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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