Synthesis of perovskite-type manganites Yb1−xDyxMnO3 (0.1 ≤ x ≤ 0.5) via solid-state reaction and high-pressure flux methods followed by structural characterization and magnetic property studies†
Abstract
A series of hexagonal perovskite-type compounds Yb1−xDyxMnO3 (0.1 ≤ x ≤ 0.5) have been prepared by the traditional solid-state reaction method at 1573 K, and a single crystal orthorhombic perovskite-type compound Yb0.5Dy0.5MnO3 has also been obtained by a high-pressure flux method at 1273 K under 5 GPa high pressure. Final products are fully characterized by XRD and XPS analyses, and then subject to magnetic measurements. It appears that the hexagonal Yb1−xDyxMnO3 (0.1 ≤ x ≤ 0.5) compounds have shown antiferromagnetic properties with a Néel temperature of 10 K, and canted antiferromagnetic behaviour is clearly evident at a lower temperature. Also, it is found that the magnetization of Yb1−xDyxMnO3 increases with the increase of Dy content. The orthorhombic Yb0.5Dy0.5MnO3 single crystal has been found to be paramagnetic, differing from RMnO3 reported in the literature, which is antiferromagnetic due to subtle structural difference.