Equation of state and pressure induced amorphization of beta-boron from X-ray measurements up to 100 GPa |
| |
Authors: | Sanz Delia Nieto Loubeyre Paul Mezouar Mohamed |
| |
Affiliation: | European Synchrotron Radiation Facility, B.P. 220, F-38043 Grenoble, Cedex France. |
| |
Abstract: | The equation of state of boron has been measured up to 100 GPa by single-crystal x-ray diffraction with helium as the pressure transmitting medium. Rhombohedral beta-boron is the stable structure up to 100 GPa under hydrostatic conditions. Nonhydrostatic stress stabilizes a different rhombohedral structure. At about 100 GPa a pressure-induced amorphization is observed. The amorphous phase can be quenched to ambient pressure. An explanation is proposed based on the different stability under pressure between intraicosahedra and intericosahedra bonds. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |