Abstract
The Cd-Ga ferrite system CdGa x Fe 2-x O 4 (where x = 0, 0.6 and 1.0) was studied by means of infrared (IR) and Mossbauer spectroscopy. IR spectra revealed two prominent bands ν 1 and ν 2 which were assigned to tetrahedral and octahedral metal complexes, respectively. The position of the highest frequency band ν 1 showed an increase with increasing gallium concentration. The lowest band ν 2 was broadened and diffused with gallium substitution. Mossbauer spectra at room temperature exhibited paramagnetic doublet lines. As a result of distortion in the oxygen positions surrounding the B-sites, the quadrupole interaction in the Mossbauer spectra increased with increasing gallium concentration. IR and Mossbauer spectra revealed the absence of Fe 2+ ions at both tetrahedral and octahedral sites.
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