Abstract
Manganese substituted Lanthanum chromite LaCr0.8Mn0.2O3 exhibits negative magnetization with decrease in temperature under the field cooled (FC) condition for the applied field H≤2000Oe. The maximum magnetic compensation temperature, (Tcomp) was 147K. A reentrant positive magnetization was observed at T≤50K due to low temperature transition. The negative magnetization is explained by considering the paramagnetic moment of Mn ions under the influence of negative internal field. Measurement of magnetic hysteresis loops under FC condition shows the presence of exchange bias field at T<Tcomp and its magnitude can be tuned by varying the temperature and cooling field.
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