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Novel binary and ternary phases in the Si-C-N system

Riedel, Ralf and Horvath-Bordon, Elisabeta and Kroll, Peter and Miehe, Gerhard and Dzivenko, Dmytro and Kleebe, Hans-Joachim and Aken, Peter A. van and Lauterbach, Stefan (2008):
Novel binary and ternary phases in the Si-C-N system.
In: Journal of the Ceramic Society of Japan, pp. 674-680, 116, (1354), ISSN 1882-0743,
[Online-Edition: http://dx.doi.org/10.2109/jcersj2.116.674],
[Article]

Abstract

The present article reviews recent advances in synthesis of novel phases in the ternary Si-C-N system. A dense carbon nitride phase, C(2)N(2)(NH), was synthesized for the first time at high pressures and high temperatures in a laser heated diamond anvil cell (LH-DAC). Based on results of electron diffraction, EELS- and SIMS-measurements combined with theoretical calculations the structure of this new C-N-H compound was analysed to be a defect wurtzite structure of the sinoite (Si(2)N(2)O)-type. Farther, a variety of amorphous SiCN phases and the first ternary crystalline phases, namely Si(NCN)(2) and Si(2)N(2)(NCN), were synthesized at ambient pressure. In general, the high-pressure polymorphs of Si-C-N materials are predicted to exhibit a unique combination of high hardness, thermal stability and oxidation resistance with interesting optoelectronic properties.

Item Type: Article
Erschienen: 2008
Creators: Riedel, Ralf and Horvath-Bordon, Elisabeta and Kroll, Peter and Miehe, Gerhard and Dzivenko, Dmytro and Kleebe, Hans-Joachim and Aken, Peter A. van and Lauterbach, Stefan
Title: Novel binary and ternary phases in the Si-C-N system
Language: English
Abstract:

The present article reviews recent advances in synthesis of novel phases in the ternary Si-C-N system. A dense carbon nitride phase, C(2)N(2)(NH), was synthesized for the first time at high pressures and high temperatures in a laser heated diamond anvil cell (LH-DAC). Based on results of electron diffraction, EELS- and SIMS-measurements combined with theoretical calculations the structure of this new C-N-H compound was analysed to be a defect wurtzite structure of the sinoite (Si(2)N(2)O)-type. Farther, a variety of amorphous SiCN phases and the first ternary crystalline phases, namely Si(NCN)(2) and Si(2)N(2)(NCN), were synthesized at ambient pressure. In general, the high-pressure polymorphs of Si-C-N materials are predicted to exhibit a unique combination of high hardness, thermal stability and oxidation resistance with interesting optoelectronic properties.

Journal or Publication Title: Journal of the Ceramic Society of Japan
Volume: 116
Number: 1354
Uncontrolled Keywords: carbon nitride; silicon carbonitride; high-pressure; density functional theory
Divisions: 11 Department of Materials and Earth Sciences > Earth Science > Geo-Material-Science
11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
11 Department of Materials and Earth Sciences > Earth Science
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 16 Apr 2012 09:12
Official URL: http://dx.doi.org/10.2109/jcersj2.116.674
Identification Number: doi:10.2109/jcersj2.116.674
Funders: The work is part of the DFG Priority Program 1236: “Strukturen und Eigenschaften von Kristallen bei extrem hohen Drücken und Temperaturen”., P. Kroll thanks the DFG for financial support (contracts Kr1805/5-1 and Kr1805/9-1)., The computational work was made possible by very generous grants of the Forschungszentrum Jülich and of the Center for Computation and Communication at Aachen., R. R. also acknowledges the support by the Fonds der Chemischen Industrie, Frankfurt, Germany.
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