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⁵⁷Fe Mössbauer study of Ti⁴⁺-substituted Li₀․₅ ₍₁₊x ₎Cr₀․₁Fe₂․₄₋₁․₅xO₄ spinels

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Title ⁵⁷Fe Mössbauer study of Ti⁴⁺-substituted Li₀․₅ ₍₁₊x ₎Cr₀․₁Fe₂․₄₋₁․₅xO₄ spinels
 
Creator Chhantbar, M C
Gismelseed, A
Modi, K B
Baldha, G J
Yousif, Ali
Joshi, H H
 
Subject Ferrites
Magnetic properties
Mössbauer spectroscopy
 
Description 856-859
57Fe Mössbauer effect (ME) was studied at 295K and 77K on the polycrystalline samples of the spinel oxide system Li₀․₅ ₍₁₊x ₎Cr₀․₁Fe₂․₄₋₁․₅xO₄ (x = 0.0 to 0.5) synthesized by double sintering ceramic technique. The chemical stoichiometry of the final products was ascertained by EDAX. The X-ray diffractometry (XRD) showed that all the samples were single-phase cubic spinels. The cell edge parameter, a (Å) for each composition was found by XRD-pattern indexing and using the Nelson-Riley method. The distribution of cations in the spinel was determined through XRD intensity analysis using the computer programme. The saturation magnetization for each composition was recorded using hysteresis loop tracer at the applied field of 4kOe. The Mössbauer spectra exhibit two Zeeman sextets due to different fields at tetrahedral (A) and octahedral (B) Fe³⁺ ions. The ME parameters are deduced using the NORMOS software and the observed hyperfine interaction parameters are explained in the light of cation distribution determined through XRD, magnetization and Mössbauer spectroscopic studies.
 
Date 2008-12-26T09:26:00Z
2008-12-26T09:26:00Z
2007-10
 
Type Article
 
Identifier 0019-5596
http://hdl.handle.net/123456789/2680
 
Language en_US
 
Relation B82B, G01J3/28
 
Publisher CSIR
 
Source IJPAP Vol.45(10) [October 2007]