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Synthesis of a cubic Ge3N4 phase at high pressures and temperatures

Serghiou, G. and Miehe, G. and Tschauner, O. and Zerr, A. and Boehler, R. (1999):
Synthesis of a cubic Ge3N4 phase at high pressures and temperatures.
In: Journal of chemical physics, American Institute of Physics, pp. 4659-4662, 111, (10), ISSN 0021-9606,
[Article]

Abstract

The two known phases of germanium nitride (Ge3N4) have hexagonal and trigonal symmetries and consist of three-dimensional networks of corner-connected Ge–N tetrahedra. A new cubic spinel phase (space-group Fd3m, a0 = 8.3 Å, Z = 8, ρ = 6.36 g/cm3) containing Ge–N octahedra and tetrahedra in a 2:1 ratio was synthesized from elemental germanium and molecular nitrogen starting materials in a laser-heated diamond-anvil cell above 14 GPa. This phase is isostructural to the recently discovered cubic spinel phase of Si3N4.

Item Type: Article
Erschienen: 1999
Creators: Serghiou, G. and Miehe, G. and Tschauner, O. and Zerr, A. and Boehler, R.
Title: Synthesis of a cubic Ge3N4 phase at high pressures and temperatures
Language: English
Abstract:

The two known phases of germanium nitride (Ge3N4) have hexagonal and trigonal symmetries and consist of three-dimensional networks of corner-connected Ge–N tetrahedra. A new cubic spinel phase (space-group Fd3m, a0 = 8.3 Å, Z = 8, ρ = 6.36 g/cm3) containing Ge–N octahedra and tetrahedra in a 2:1 ratio was synthesized from elemental germanium and molecular nitrogen starting materials in a laser-heated diamond-anvil cell above 14 GPa. This phase is isostructural to the recently discovered cubic spinel phase of Si3N4.

Journal or Publication Title: Journal of chemical physics
Volume: 111
Number: 10
Publisher: American Institute of Physics
Uncontrolled Keywords: germanium compounds, high-pressure effects, high-temperature effects, chemical reactions
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
Date Deposited: 19 Nov 2008 16:20
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