2005
DOI: 10.1007/s10751-006-9275-8
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Mössbauer studies of Cr substituted bulk and nano Co–Zn ferrites

Abstract: X-ray and Mössbauer studies have been carried out for bulk and nano sized Cr x Co (0.5−x) Zn 0.5 Fe 2 O 4 (x=0, 0.1, 0.2, 0.25, 0.3, 0.4, 0.5) prepared through wet chemical co-precipitation method. The hyperfine fields in the bulk samples at tetrahedral A site is independent of the substitution while it decreases sharply at octahedral B site due to the quenching of A-B super-exchange interaction due to the addition of Cr ions which preferentially occupy the octahedral B sites. The average particle size for the… Show more

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Cited by 5 publications
(1 citation statement)
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“…Nano particles of Cr 0.25 Co 0.25 Zn 0.5 Fe 2 O 4 were synthesized by the chemical coprecipitation method [7], using analytical grade Fe(NO 3 ) 3 .9H 2 O, CoCl 2 .6H 2 O, anhydrous ZnCl 2 and CrCl 2 .6H 2 O and NH 4 OH for precipitation. The precipitate was dried at 373 K for 24 h and subsequently annealed at 573 K for 24 h to obtain the nano samples.…”
Section: Methodsmentioning
confidence: 99%
“…Nano particles of Cr 0.25 Co 0.25 Zn 0.5 Fe 2 O 4 were synthesized by the chemical coprecipitation method [7], using analytical grade Fe(NO 3 ) 3 .9H 2 O, CoCl 2 .6H 2 O, anhydrous ZnCl 2 and CrCl 2 .6H 2 O and NH 4 OH for precipitation. The precipitate was dried at 373 K for 24 h and subsequently annealed at 573 K for 24 h to obtain the nano samples.…”
Section: Methodsmentioning
confidence: 99%