Abstract

The effect of Fe3+ ions substitution by rare earth La3+ ions on magnetic properties of nanocrystalline cobalt ferrite is investigated in this paper. Co‐precipitation method was used to prepare ultrafine particles of CoFe2−xLaxO4 (x = 0,0.10,0.15). The samples have cubic spinel structure. Structure has been investigated by XRD while magnetic properties have been studied using VSM and Mossbauer spectrometer. La3+ ions modulate significantly the magnetic properties of cobalt ferrites.

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