Interesting thermomagnetic history effects in the antiferromagnetic state of SmMn2Ge2
Abstract
We present results of magnetization measurements showing that the magnetic response of the antiferromagnetic state of SmMn2Ge2 depends on the path used in the field(H)-temperature(T) phase space to reach this state. Distinct signature of metastablity is observed in this antiferromagnetic state when obtained via field-cooling/field-warming paths. The isothermal M-H loops show lack of end-point memory, reminiscent of that seen in metastable vortex states near the field-induced first order phase transition in various type-II superconductors.
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