Can R-R interaction in orthoferrites become predominant with high rare earth concentration and what is the effect of high temperature?

03 May 2017 1 967 Report

Many articles states about three interactions (Fe-Fe, Fe-R, and R-R) in orthoferrites either at or below Neel Temperature. Not many evidence were found regarding the predominant interactions at high temperatures and interaction with respect to rare earth concentrations. What will be the effect on the interactions at high rare earth concentrations and at high temperature?

Bartlomiej Andrzejewski

In orthoferrites dominant are Fe-Fe interactions. Even at high concentration rare earth moments can order at very low temperature (usually below 10K) and thus contribute to magnetic properties.

Best regards, Bartek

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