Sign reversal of magnetization in Mn substituted SmCrO3
Abstract
Single phase samples of orthorhombic SmCr1-xMnxO3 compounds were prepared for x=0 to 0.50. Analysis of X-ray diffraction patterns shows a systematic increase in lattice parameters with increase in Mn concentration. The phenomenon of magnetization reversal is observed for x=0.10-0.30 samples with a maximum magnetic compensation temperature of 126 K. The mechanism of magnetization reversal is explained by considering the competition between the paramagnetic moments of Mn3+ and Sm3+ ions under the influence of negative internal field due to antiferromagnetically ordered Cr3+ ions and the canted ferromagnetic component of Cr3+ ions. For x≥0.40, the samples exhibit ferromagnetic like behavior.
- Publication:
-
Journal of Magnetism and Magnetic Materials
- Pub Date:
- May 2016
- DOI:
- 10.1016/j.jmmm.2015.12.047
- Bibcode:
- 2016JMMM..405..209D
- Keywords:
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- Samarium chromites;
- Antiferromagnetism;
- Magnetization reversal