High-pressure synthesis and compressive behavior of tantalum nitrides

Journal Article · Fri Mar 14 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4867986· OSTI ID:22277868

Yusa, Hitoshi; Kawamura, Fumio; Taniguchi, Takashi ^[1]; Hirao, Naohisa; Ohishi, Yasuo ^[2]; Kikegawa, Takumi ^[3]

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1. National Institute for Materials Science (NIMS), 1-1, Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
2. Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-cho 679-5198 (Japan)
3. Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801 (Japan)

WC- and NaCl-type tantalum mononitrides and hexagonal Ta{sub 5}N{sub 6} were prepared at high pressure and temperature, and their compressive behaviors were examined using in situ high-pressure X-ray diffraction. Comparison of the formula volumes of the tantalum mononitrides indicated that the NaCl type was the densest phase. The P–V data showed that the WC-type structure had the highest bulk modulus value (K{sub 0} = 351(1) GPa). An analysis of the compression properties in terms of the crystallographic characteristics of the structures indicated that a prismatic polyhedral array with face-sharing connectivity was responsible for the incompressible nature of these tantalum nitrides.

• OSTI ID: 22277868
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COMPARATIVE EVALUATIONS
COMPRESSION
CUBIC LATTICES
HEXAGONAL LATTICES
IMPACT STRENGTH
PRESSURE DEPENDENCE
PRESSURE RANGE GIGA PA
SYNTHESIS
TANTALUM NITRIDES
TUNGSTEN CARBIDES
X-RAY DIFFRACTION