Magnetic and Mössbauer studies on α-Fe2O3· Li2O system

Ramachandran, N. ; Biswas, A. B. (1979) Magnetic and Mössbauer studies on α-Fe2O3· Li2O system Journal of Solid State Chemistry, 30 (1). pp. 61-64. ISSN 0022-4596

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Official URL: http://www.sciencedirect.com/science/article/pii/0...

Related URL: http://dx.doi.org/10.1016/0022-4596(79)90130-0

Abstract

A study has been made of the structural and thermal phase behavior of the mixed system α· Fe2O3·xLi2O with a view toward investigating the changes occurring in the properties of different compositions due to substitution of diamagnetic Li+ for Fe3+ at B sites in the inverse spinel lattice. This also indicates whether the addition of Li2O, over and above that (x = 0.2) required for the formation of the spinel LiFe5O8, enters the substitutional or interstitial sites. Characterization by X-ray powder diffraction, initial magnetic susceptibility, magnetic hysteresis, Mössbauer spectroscopy, and differential thermal analysis clearly indicates that Li+ does not enter the spinel lattice, but forms a biphasic system LiFe5O8 and LiFeO2, which are not miscible.

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ID Code:81107
Deposited On:04 Feb 2012 07:48
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