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IJPAP Vol.45(10) [October 2007] >


Title: Mössbauer study of nano-particles of spinel ferrites LixFe₃₋xO₄
Authors: Chander, Subhash
Sharma, M P
Krishnamurthy, Anjali
Srivastava, Bipin K
Keywords: Mössbauer study
Nano-particles
Spinel ferrites
LixFe₃₋xO₄
Issue Date: Oct-2007
Publisher: CSIR
IPC CodeG01J3/28, H01F41/30
Abstract: Mössbauer spectra have been recorded on three nano-particle samples in the series LixFe₃₋xO₄ (for x = 0.1, 0.2 and 0.3) at 300K and 80K. Spectra could be resolved into two doublets attributed to two crystalline sites, viz., tetrahedral site and octahedral site. Li occupies the octahedral site with a complete preference as in the bulk particle size state. Analysis of Mössbauer spectra shows that electron hopping manifests at temperatures down to 80K implying the absence of a Verwey type transition. Magnetization measurements support this inference and are suggestive of no such transition occurring down to 20K.
Page(s): 816-820
ISSN: 0019-5596
Source:IJPAP Vol.45(10) [October 2007]

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