Far-infrared spectra of lithium-titanium mixed ferrites

The far-infrared spectra of Li 0.5+0.5 a Fe 2.5−1.5 a Ti a O 4 reveal two prominent bands v 1 and v 2 and two weak bands v 3 and v 4 in the 700−200 cm −1 range. The high frequency bands v 1 and v 2 are assigned to tetrahedral metal complexes. On the basis of the analysis of the IR bands and their co...

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Bibliographic Details
Published in:Materials science & engineering. B, Solid-state materials for advanced technology Solid-state materials for advanced technology, 1994, Vol.22 (2), p.201-205
Main Authors: Bhagavantha Reddy, M., Devender Reddy, V., Mulay, V.N., Bhupal Reddy, K., Venugopal Reddy, P.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Infrared and raman spectra and scattering
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Other nonmetallic inorganics
Physics
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Summary:The far-infrared spectra of Li 0.5+0.5 a Fe 2.5−1.5 a Ti a O 4 reveal two prominent bands v 1 and v 2 and two weak bands v 3 and v 4 in the 700−200 cm −1 range. The high frequency bands v 1 and v 2 are assigned to tetrahedral metal complexes. On the basis of the analysis of the IR bands and their correlation with the cation distribution, the band v 3 is assigned to octahedral divalent metal ion-oxygen complexes, while the lowest frequency band v 4 is attributed to the lattice vibrations in the mixed ferrites. The splitting of the IR spectral band is explained on the basis of Fe 2+ ion concentration.
ISSN:0921-5107
1873-4944
DOI:10.1016/0921-5107(94)90244-5