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Low-compressibility of tungsten tetraboride: a high pressure X-ray diffraction study.
- Source :
- High Pressure Research; Jun2011, Vol. 31 Issue 2, p275-282, 8p
- Publication Year :
- 2011
-
Abstract
- Diamond anvil cell synchrotron X-ray diffraction (XRD) experiments have been carried out on submicron-sized tungsten tetraboride (WB4) at room temperature up to 50.8 GPa with a silicone oil pressure medium. The crystal structure of WB4 remains unchanged up to the highest pressure. The isothermal bulk modulus K0 and its pressure derivative, [image omitted] , have been determined from the present compression by fitting the third-order Birch-Murnaghan equation of state: K0=325±9 GPa and [image omitted] . The high value of the bulk modulus shows that WB4 has high stiffness and/or low-compressibility. Moreover, we also found that the compression behavior of the unit cell axes (a- and c-axes) of WB4 demonstrates an anisotropic nature of compressibility. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08957959
- Volume :
- 31
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- High Pressure Research
- Publication Type :
- Academic Journal
- Accession number :
- 60703446
- Full Text :
- https://doi.org/10.1080/08957959.2011.582871