Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1595087 | Solid State Communications | 2008 | 5 Pages |
Abstract
The crystal and magnetic structures of orthorhombic, perovskite-type LuMnO3 are described on the basis of neutron powder diffraction data; space group Pbnm, a=5.19865(14)Å, b=5.78853(15)Å, and c=7.2970(2)Å at 298 K. There is a strong cooperative Jahn–Teller (JT) distortion of the MnO6-octahedra resulting in orbital ordering and EE-type antiferromagnetic order below TN∼40TN∼40 K. The magnetic propagation wave vector is commensurate k=b∗/2 at 8 K and no indications of any magnetic phase transitions are seen in susceptibility data. The ordered magnetic moment for Mn is 3.4μB.
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Authors
H. Okamoto, N. Imamura, B.C. Hauback, M. Karppinen, H. Yamauchi, H. Fjellvåg,