Electronic Resource
Springer
Hyperfine interactions
128 (2000), S. 467-479
ISSN:
1572-9540
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The Mössbauer effect technique has been employed for the study of magnetic properties of spinel series Ni1−xCuxMnyFe2−yO4 with 0.0≤x≤1.0, 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 Nèel point TN and Debye temperature θD are found to be 650 and 679 K, respectively. The temperature dependence of the sublattice magnetization σ(T) obeys a one‐third‐power law in the range 0.5〈T/TN〈0.99.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1012624808538
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