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Structural and magnetic properties of Li–Cu mixed spinel ferrites

✍ Scribed by S. Manjura Hoque; M. Samir Ullah; F.A. Khan; M.A. Hakim; D.K. Saha


Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
888 KB
Volume
406
Category
Article
ISSN
0921-4526

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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