Abstract
The high pressure properties of icosahedral boron arsenide (B 12As2) were studied by in situ X-ray diffraction measurements at pressures up to 25.5 GPa at room temperature. B 12As2 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 B12As2c-axis was 16.2% more compressible than a-axis. The boron icosahedron plays a dominant role in the compressibility of boron-rich compounds.
Original language | English |
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Pages (from-to) | 144-146 |
Number of pages | 3 |
Journal | Journal of Physics and Chemistry of Solids |
Volume | 72 |
Issue number | 2 |
DOIs | |
State | Published - Feb 2011 |
Keywords
- C. High pressure
- C. X-ray diffraction
- D. Equation-of-state