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Rare-Earth Manganese Copper Phosphides REMnCu4P3 (RE = Gd-Ho): The First Quaternary Ordered Variants of the YCo5P3-Type Structure.
- Source :
-
Inorganic Chemistry . 2/2/2015, Vol. 54 Issue 3, p860-866. 7p. - Publication Year :
- 2015
-
Abstract
- The quaternary rare-earth phosphides REMnCu4P3 (RE = Gd-Ho) were obtained from direct reactions of the elements at 800 °C. They are the first examples in which ordering of two different transition-metal atoms takes place within the orthorhombic YCo5P3-type structure [Pearson symbol oP36, space group Pnma, Z = 4; a = 12.667(2)-12.6489(4) Å, b = 3.8119(7)-3.7755(1) Å, and c = 10.895(2)-10.8632(4) Å for RE = Gd-Ho]. Columns of trigonal prisms centered by P atoms are connected in propellor-shaped units in zigzag arrangements to generate square-pyramidal (CN5) sites that are occupied by Mn atoms and tetrahedral sites (CN4) that are occupied by Cu atoms. Spin-polarized band-structure calculations predict that the hypothetical compound YMnCu4P3 will exhibit magnetic ordering. Electrical resistivity measurements on TbMnCu4P3 indicate a poor metal. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00201669
- Volume :
- 54
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 101103027
- Full Text :
- https://doi.org/10.1021/ic502075x