High Pressure X-ray Diffraction Study on Icosahedral Boron Arsenide (B12As2)

Journal Article · Sat Dec 31 00:00:00 EST 2011 · Journal of Physics and Chemistry of Solids

DOI:https://doi.org/10.1016/j.jpcs.2010.12.005· OSTI ID:1042017

Wu, J; Zhu, H; Hou, D; Ji, C; Whiteley, C; Edgar, J; Ma, Y

The high pressure properties of icosahedral boron arsenide (B12As2) were studied by in situ X-ray diffraction measurements at pressures up to 25.5 GPa at room temperature. B12As2 retains its rhombohedral structure; no phase transition was observed in the pressure range. The bulk modulus was determined to be 216 GPa with the pressure derivative 2.2. Anisotropy was observed in the compressibility of B12As2-c-axis was 16.2% more compressible than a-axis. The boron icosahedron plays a dominant role in the compressibility of boron-rich compounds.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE SC OFFICE OF SCIENCE (SC)
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 1042017
• Report Number(s): BNL-97695-2012-JA; JPCSAW; TRN: US201212%%428
• Journal Information: Journal of Physics and Chemistry of Solids, Vol. 72, Issue 2; ISSN 0022-3697
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANISOTROPY
BORON
BORON ARSENIDES
COMPRESSIBILITY
PRESSURE RANGE
X-RAY DIFFRACTION