A Mossbauer and X-ray diffraction study on the cation distribution in FeAl2O4

Yagnik, C. M. ; Mathur, H. B. (1968) A Mossbauer and X-ray diffraction study on the cation distribution in FeAl2O4 Journal of Physics C: Solid State Physics, 1 (2). pp. 469-472. ISSN 0022-3719

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Official URL: http://iopscience.iop.org/0022-3719/1/2/320

Related URL: http://dx.doi.org/10.1088/0022-3719/1/2/320

Abstract

The Mossbauer spectrum of FeAl2O4 consists of three absorption peaks at 0, 1.46 and 2.56 mm s-1 relative to a 57Co/Cu source. The spectrum can be resolved into two quadrupole-split spectra. The outer pair of lines corresponds to a quadrupole splitting of 2.76±0.10 mm s-1 and an isomer shift of 1.52±0.10 mm s-1 and may be attributed to the Fe2+ ions at the B sites. The inner doublet with a quadrupole splitting of 1.39±0.10 mm s-1 and an isomer shift of 1.10±0.10 mm s-1 can be attributed to the Fe2+ ions at the A sites. The degree of inversion x was determined from the relative areas under the two spectra to be 23±2%. This is in agreement with the value of 25% determined from the intensities of the X-ray diffraction powder pattern.

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Deposited On:05 Mar 2011 05:31
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