期刊
HYPERFINE INTERACTIONS
卷 128, 期 4, 页码 467-479出版社
BALTZER SCI PUBL BV
DOI: 10.1023/A:1012624808538
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The Mossbauer effect technique has been employed for the study of magnetic properties of spinel series Ni1-xCuxMnyFe2-yO4 with 0.0 less than or equal tox less than or equal to1.0, and y=0.6. The substitution of Mn3+ and Cu2+ ions results in a slight decrease of the hyperfine field at B- as well as A-sites. The area ratio of Fe3+ ions at the A- and B-site at 77 K indicates that Cu2+, Ni2+ and Mn3+ ions occupy the octahedral sites in an evidence for complete inverse spinel in this system. The temperature dependence of the hyperfine parameters has been studied for composition with x=0.5 where Neel point T-N and Debye temperature theta (D) are found to be 650 and 679 K, respectively. The temperature dependence of the sublattice magnetization sigma (T) obeys a one-third-power law in the range 0.5
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