New high-pressure polymorph of NiSb2

Hirotsugu Takizawa; Kyota Uheda; Tadashi Endo

doi:10.1016/S0966-9795(00)00091-1

New high-pressure polymorph of NiSb₂

Hirotsugu Takizawa, Kyota Uheda, Tadashi Endo

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11 Citations (Scopus)

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
Pages (from-to)	1399-1403
Number of pages	5
Journal	Intermetallics
Volume	8
Issue number	12
DOIs	https://doi.org/10.1016/S0966-9795(00)00091-1
Publication status	Published - 2000 Dec

ASJC Scopus subject areas

Chemistry(all)
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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title = "New high-pressure polymorph of NiSb2",

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.",

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T1 - New high-pressure polymorph of NiSb2

AU - Takizawa, Hirotsugu

AU - Uheda, Kyota

AU - Endo, Tadashi

PY - 2000/12

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N2 - 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.

AB - 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.

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