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Synthesis of a cubic Ge3N4 phase at high pressures and temperatures

Serghiou, G. ; Miehe, G. ; Tschauner, O. ; Zerr, A. ; Boehler, R. (1999)
Synthesis of a cubic Ge3N4 phase at high pressures and temperatures.
In: Journal of chemical physics, 111 (10)
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. ; Miehe, G. ; Tschauner, O. ; Zerr, A. ; Boehler, R.
Type of entry: Bibliographie
Title: Synthesis of a cubic Ge3N4 phase at high pressures and temperatures
Language: English
Date: 8 September 1999
Publisher: American Institute of Physics
Journal or Publication Title: Journal of chemical physics
Volume of the journal: 111
Issue Number: 10
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.

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
Last Modified: 20 Feb 2020 13:28
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