Abstract
The crystal structure and magnetic order of the double perovskite Gd2CrMnO6 have been investigated systematically by employing magnetization and ESR measurement for the first time. Structure analysis revealed that the Gd2CrMnO6 crystallizes in the adopted B-site disorder orthorhombic structure with space group of Pbnm. Magnetization measurements indicated that the system possesses a long-range antiferromagnetic ordering at TN = 40 K. In Gd2CrMnO6, the magnetization sign reversal was observed below Tcomp = ∼ 27 K due to the Dzyaloshinskii-Moriya antisymmetric interaction of Cr3+-O2--Mn3+ and the different sublattice of Gd3+ and Cr3+/Mn3+. The competing magnetic interaction is greatly enhanced by FM 3d-4f interaction and should be responsible for the Griffiths-like phase (TG ∼ 260 K) and spin-glass-like state.
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