Title :
57Fe Mossbauer Spectroscopic and Bulk Magnetic Study of the Spinel System: Cualxcrxfe 2-2xO4
Author :
Trivedi, U.N. ; Joshi, H.H. ; Chhantbar, M. ; Modi, K. ; Verma, H.C.
Author_Institution :
Saurashtra univ., Rajkot
Abstract :
The double sintering ceramic technique is used in this study to synthesize the spinel oxide system, CuAlxCrxFe2-2xO4, with compositions x=0.0,0.2-0.8. The lattice constants of the ferrites show samples exhibiting single-phase spinel structures as determined by X-ray diffraction. Magnetic properties (e.g. hyperfine interactions, magnetic structure and cation distribution in the antiferromagnetically coupled sublattices) are determined by magnetisation measurements and Mossbauer spectroscopy and are found to be sensitive to the thermal history of the specimen.
Keywords :
Mossbauer spectroscopy; X-ray diffraction; aluminium compounds; antiferromagnetic materials; ceramics; chromium compounds; copper compounds; exchange interactions (electron); ferrites; hyperfine interactions; lattice constants; magnetic structure; magnetisation; sintering; CuAlCrFe2O4; Mossbauer spectroscopy; X-ray diffraction; antiferromagnetically coupled sublattices; cation distribution; double sintering ceramic technique; ferrites; hyperfine interactions; lattice constants; magnetic structure; magnetisation measurements; single-phase spinel structures; thermal history; Antiferromagnetic materials; Ceramics; Chromium; Couplings; Ferrites; Iron; Lattices; Magnetic properties; Spectroscopy; X-ray diffraction;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.376476
