Interesting thermomagnetic history effects in the antiferromagnetic state of SmMn_2Ge_2

Details Interesting thermomagnetic history effects in the antiferromagnetic state of SmMn_2Ge_2 Interesting thermomagnetic history effects in the antiferromagnetic state of SmMn_2Ge_2

2002-07-18

arxiv.org/abs/cond-mat/0207441v1

Physics

Condensed Matter

Strongly Correlated Electrons

11 pages of text and 3 figures

Scientific paper

10.1088/0953-8984/14/41/332

We present results of magnetization measurements showing that the magnetic response of the antiferromagnetic state of SmMn_2Ge_2 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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