Magnetic ordering of R3Cu4Sn4(R Tb, Dy, Ho and Er)
| Autor: | A. Zygmunt, E. Wawrzyńska, A. Szytuła, Wieslawa Sikora, B. Penc, J Hernández-Velasco |
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| Rok vydání: | 2003 |
| Předmět: | |
| Zdroj: | Journal of Physics: Condensed Matter. 15:5279-5296 |
| ISSN: | 1361-648X 0953-8984 |
| DOI: | 10.1088/0953-8984/15/30/310 |
| Popis: | Neutron diffraction studies of polycrystalline R3Cu4Sn4 (R = Tb, Dy, Ho, Er) intermetallic compounds with the orthorhombic Gd3Cu4Ge4-type crystal structure indicate the existence of different magnetic structures. Rare earth atoms occupy two non-equivalent 2d and 4e sublattices. The rare earth magnetic moments order at low temperatures. For R = Tb and Dy the magnetic structures below the Neel temperature are described by the propagation vectors k = (0, 0, 1/2 + δ). In these compounds both rare earth sublattices order. For R = Ho the magnetic structure is more complicated. There are two vectors; one of them is k = (0, 1/2, 0) whereas the second one changes with temperature. For the Er compound there is the propagation vector k = (1/2, 1/2, 0) which describes the magnetic ordering in the 2d sublattice and at low temperatures is accompanied by the propagation vector k = (0, 0,δ) describing the ordering in the 4e sublattice. |
| Databáze: | OpenAIRE |
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