High-pressure study of low-compressibility Ta2N

Lei, W. W., Liu, D., Li, X. F., Zhang, J., Zhou, Q., Hu, J. Z., Cui, Q. L. and Zou, G. T. 2007, High-pressure study of low-compressibility Ta2N, Journal of physics : condensed matter, vol. 19, no. 42, pp. 1-1.

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Title High-pressure study of low-compressibility Ta2N
Author(s) Lei, W. W.ORCID iD for Lei, W. W. orcid.org/0000-0003-2698-299X
Liu, D.ORCID iD for Liu, D. orcid.org/0000-0001-6875-419X
Li, X. F.
Zhang, J.
Zhou, Q.
Hu, J. Z.
Cui, Q. L.
Zou, G. T.
Journal name Journal of physics : condensed matter
Volume number 19
Issue number 42
Start page 1
End page 1
Total pages 1
Publisher Institute of Physics Publishing
Place of publication Bristol, England
Publication date 2007-09-18
ISSN 0953-8984
Keyword(s) elastic moduli
high pressure effects
phase transitions
x ray diffraction analysis
Summary Room temperature synchrotron x-ray diffraction experiments were performed on nanocrystal Ta2N in a diamond anvil cell to a pressure of 55.48 GPa. This nitride is a well-known kind of high-hardness material, and it is found to be highly incompressible. The structure is stable with no phase transitions observed in this pressure range. The zero-pressure bulk modulus and its pressure derivative at ambient pressure are B0 = 360 ± 3 GPa, B0' = 4, and in room conditions, the a and c parameters are 3.054 Å, 4.996 Å, respectively. The bulk modulus of Ta2N is greater than those of TaC, ε-TaN, Cr2N and MoN. The differences in bulk moduli might be due to the differences in structure and the cohesive energy among these phases.
Language eng
Field of Research 091205 Functional Materials
020504 Photonics, Optoelectronics and Optical Communications
100708 Nanomaterials
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2007, Institute of Physics Publishing
Persistent URL http://hdl.handle.net/10536/DRO/DU:30048230

Document type: Journal Article
Collections: Institute for Frontier Materials
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