Record Details


Field	Value

Title	Cation distribution in the nano size aluminium substituted cobalt ferrites using XRD, magnetic and Mössbauer spectral studies

Creator	Singhal, Sonal Barthwal, S K Chandra, Kailash

Subject	Cobalt ferrites Nano size aluminium Mössbauer spectral studies Aerosol

Description	821-825 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.

Date	2008-12-26T07:06:43Z 2008-12-26T07:06:43Z 2007-10

Type	Article

Identifier	0019-5596 http://hdl.handle.net/123456789/2673

Language	en_US

Relation	B82B, G01J3/28

Publisher	CSIR

Source	IJPAP Vol.45(10) [October 2007]

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