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High-pressure high-temperature synthesis of novel binary and ternary nitride phases of group 4 and 14 elements

Dzivenko, D. A. and Horvath-Bordon, E. and Zerr, A. and Miehe, G. and Kroll, P. and Boehler, R. and McMillan, P. F. and Riedel, R. :
High-pressure high-temperature synthesis of novel binary and ternary nitride phases of group 4 and 14 elements.
[Online-Edition: http://dx.doi.org/10.1088/1742-6596/121/6/062003]
In: Journal of Physics: Conference Series, 121 (6) 062003. ISSN 1742-6596
[Article] , (2008)

Official URL: http://dx.doi.org/10.1088/1742-6596/121/6/062003

Abstract

Our recent experiments on high-pressure high-temperature synthesis of novel ternary nitrides of group 4 and 14 elements are presented. Dense carbon nitride imide, C2N2(NH), was synthesized for the first time in a laser heated diamond anvil cell (LH-DAC) at pressures above 27 GPa and temperatures around 2000 K. Based on results of the electron diffraction-, EELS-and SIMS-measurements combined with theoretical calculations the structure of this new C-N-H phase was suggested to be of the defect-wurtzite type. Farther, macroscopic amounts of a new oxynitride of zirconium having cubic Th3P4-type structure, c-Zr2.86(N0.88O0.12)4, were synthesized at high pressures and temperatures using a multi-anvil apparatus. Earlier this structure was observed for binary nitrides of zirconium(IV) and hafnium(IV) synthesized in microscopic amounts in a LH-DAC. The lattice parameter of c-Zr2.86(N0.88O0.12)4 was found to be a0 = 6.7549(1) Å which is slightly larger than that of c-Zr3N4. Isotropic bulk and shear moduli of c-Zr2.86(N0.88O0.12)4 of B0 = 219 GPa and G0 = 96 GPa, respectively, were determined from the compression and nanoindentation measurements. The Vickers microhardness, HV(1), of the porous (about 30 vol. %) sample of c-Zr2.86(N0.88O0.12)4 was measured to be 12 GPa, similar to that of single crystal δ-ZrN.

Item Type: Article
Erschienen: 2008
Creators: Dzivenko, D. A. and Horvath-Bordon, E. and Zerr, A. and Miehe, G. and Kroll, P. and Boehler, R. and McMillan, P. F. and Riedel, R.
Title: High-pressure high-temperature synthesis of novel binary and ternary nitride phases of group 4 and 14 elements
Language: English
Abstract:

Our recent experiments on high-pressure high-temperature synthesis of novel ternary nitrides of group 4 and 14 elements are presented. Dense carbon nitride imide, C2N2(NH), was synthesized for the first time in a laser heated diamond anvil cell (LH-DAC) at pressures above 27 GPa and temperatures around 2000 K. Based on results of the electron diffraction-, EELS-and SIMS-measurements combined with theoretical calculations the structure of this new C-N-H phase was suggested to be of the defect-wurtzite type. Farther, macroscopic amounts of a new oxynitride of zirconium having cubic Th3P4-type structure, c-Zr2.86(N0.88O0.12)4, were synthesized at high pressures and temperatures using a multi-anvil apparatus. Earlier this structure was observed for binary nitrides of zirconium(IV) and hafnium(IV) synthesized in microscopic amounts in a LH-DAC. The lattice parameter of c-Zr2.86(N0.88O0.12)4 was found to be a0 = 6.7549(1) Å which is slightly larger than that of c-Zr3N4. Isotropic bulk and shear moduli of c-Zr2.86(N0.88O0.12)4 of B0 = 219 GPa and G0 = 96 GPa, respectively, were determined from the compression and nanoindentation measurements. The Vickers microhardness, HV(1), of the porous (about 30 vol. %) sample of c-Zr2.86(N0.88O0.12)4 was measured to be 12 GPa, similar to that of single crystal δ-ZrN.

Journal or Publication Title: Journal of Physics: Conference Series
Volume: 121
Number: 6
Publisher: IOP Publishing
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 16 Apr 2012 08:14
Official URL: http://dx.doi.org/10.1088/1742-6596/121/6/062003
Identification Number: doi:10.1088/1742-6596/121/6/062003
Funders: We acknowledge financial supports of the Deutsche Forschungsgemeinschaft (Bonn, Germany), We acknowledge financial supports of the Fonds der Chemischen Industrie (Frankfurt, Germany),, We acknowledge financial supports of the Heisenberg-Fellowship program (Germany),, We acknowledge financial supports of the Adolf-Messer-Foundation (Germany), We acknowledge financial supports of the Engineering and Physical Science Research Council (UK)
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