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The Cd-Ga ferrite system CdGa x Fe 2--x O 4 (where x ¼ 0, 0.6 and 1.0) was studied by means of infrared (IR) and Mö ssbauer spectroscopy. IR spectra revealed two prominent bands n 1 and n 2 which were assigned to tetrahedral and octahedral metal complexes, respectively. The position of the highest frequency band n 1 showed an increase with increasing gallium concentration. The lowest band n 2 was broadened and diffused with gallium substitution. Mö ssbauer 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 Mö ssbauer spectra increased with increasing gallium concentration. IR and Mö ssbauer spectra revealed the absence of Fe 2+ ions at both tetrahedral and octahedral sites.

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