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arXiv · 0706.0749

Peculiar Ferrimagnetism Associated with Charge Order in Layered Perovskite GdBaMn2O5

A. A. Taskin·Yoichi Ando
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Abstract

The magnetic properties of GdBaMn_{2}O_{5.0}, which exhibits charge ordering, are studied from 2 to 400 K using single crystals. In a small magnetic field applied along the easy axis, the magnetization M shows a temperature-induced reversal which is sometimes found in ferrimagnets. In a large magnetic field, on the other hand, a sharp change in the slope of M(T) coming from an unusual turnabout of the magnetization of the Mn sublattices is observed. Those observations are essentially explained by a molecular field theory which highlights the role of delicate magnetic interactions between Gd^{3+} ions and the antiferromagnetically coupled Mn^{2+}/Mn^{3+} sublattices.

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A. A. Taskin, Yoichi Ando. 2007-06-06. Peculiar Ferrimagnetism Associated with Charge Order in Layered Perovskite GdBaMn2O5. https://doi.org/10.1103/physrevlett.98.207201

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