NISCAIR Online Periodicals Repository

Research Journals >
Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.45 [2007] >
IJPAP Vol.45(10) [October 2007] >

Title: Cation distribution in the nano size aluminium substituted cobalt ferrites using XRD, magnetic and Mössbauer spectral studies
Authors: Singhal, Sonal
Barthwal, S K
Chandra, Kailash
Keywords: Cobalt ferrites
Nano size aluminium
Mössbauer spectral studies
Issue Date: Oct-2007
Publisher: CSIR
IPC CodeB82B, G01J3/28
Abstract: Aerosol route have been used to prepare the nano size ferrites CoFe₂O₄, CoAl₀․₃₇Fe₁․₆₃O₄, CoAl₀․₉₅Fe₁․₀₅O₄ and CoAl₁․₃₆Fe₀․₆₄O₄. A decrease in lattice parameter and saturation magnetization with the increase of aluminium concentration was attributed to the smaller ionic radius and weakening of exchange interactions respectively. Room temperature Mössbauer spectra of as obtained samples exhibited a broad doublet suggesting super paramagnetic nature. The samples annealed at 1200ºC showed broad sextets, which were fitted with different sextets, due to the tetrahedrally and octahedrally coordinated iron cation. The cation distribution calculated from the X-ray intensity and Mössbauer data indicated that Al³⁺ ions enter into A and B sites in ~2 : 3 ratio and Fe³⁺(oct.)/Fe³⁺(tet.) ratio increases with Al³⁺ concentration.
Page(s): 821-825
ISSN: 0019-5596
Source:IJPAP Vol.45(10) [October 2007]

Files in This Item:

File Description SizeFormat
IJPAP 45(10) 821-825.pdf191.8 kBAdobe PDFView/Open
 Current Page Visits: 953 
Recommend this item


Online Submission of Articles |  NISCAIR Website |  National Knowledge Resources Consortium |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2015 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 172583 since 01-Sep-2015  Last updated on 30-Jun-2016Webmaster: