Abstract
A new polymorph of NiSb2 was obtained under high-pressure/temperature condition of 6 GPa and 550-650 °C. The crystal structure is orthorhombic with the space group Pbca (No. 61), isostructural with the low-temperature form of NiAs2 (pararammelsbergite). The crystallographic parameters were refined by the Rietveld analysis of the powder X-ray diffraction data (a = 0.62866(2) nm, b = 0.63643(2) nm, c = 1.23670(3) nm, Z = 8). The structure can be regarded as an intermediate structure between the marcasite-type and the pyrite-type. The pararammelsbergite-type NiSb2 is a high-pressure form of NiSb2 and the density is slightly higher than that of ambient pressure form with the marcasite-type structure.
Original language | English |
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Pages (from-to) | 1399-1403 |
Number of pages | 5 |
Journal | Intermetallics |
Volume | 8 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2000 Dec |
ASJC Scopus subject areas
- Chemistry(all)
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry