Magnetic structure of the La3NiGe2-type Tb3NiGe2 and Mn5Si3-type Tb5NixGe3−x (x=0 and 0.3) |
| |
| Authors: | A.V. Morozkin Jinlei Yao Y. Mozharivskyj O. Isnard |
| |
| Affiliation: | 1. Department of Chemistry, Moscow State University, Leninskie Gory, House 1, Building 3, Moscow GSP-2 119992, Russia;2. Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1;3. Institut Néel, CNRS—Université Joseph Fourier, Departement MCMF, 25 rue des Martyrs, BP 166, 38042 Grenoble cedex 9, France |
| |
| Abstract: | We present a neutron powder diffraction investigation of the magnetic structure of La3NiGe2-type Tb3NiGe2 and Mn5Si3-type Tb5NixGe3−x (x=0, 0.3) compounds. It is found that below∼135 K Tb3NiGe2 exhibits a commensurate b-collinear ferrimagnetic ordering with C2h′={1, mz, 1′×2z, 1′×1?} magnetic point group. The Mn5Si3-type Tb5Ge3 and Tb5Ni0.3Ge2.7 compounds are found to present a flat spiral type antiferromagnetic ordering at 85 and ≥89 K, respectively. The Ni for Ge substitution is found to decrease the flat spiral ordered magnetic unit cell from a×a×40c of Tb5Ge3 (below 40 K) down to a×a×5c for Tb5Ni0.3Ge2.7 (below ∼10 K). |
| |
| Keywords: | Rare earth intermetallics Neutron diffraction Magnetic structure |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
