1.
Sci Technol Adv Mater
; 9(4): 044209, 2008 Dec.
Artigo
em Inglês
| MEDLINE
| ID: mdl-27878026
RESUMO
The densest boron phase (2.52 g cm-3) was produced as a result of the synthesis under pressures above 9 GPa and temperatures up to â¼1800 °C. The x-ray powder diffraction pattern and the Raman spectra of the new material do not correspond to those of any known boron phases. A new high-pressure high-temperature boron phase was defined to have an orthorhombic symmetry (Pnnm (No. 58)) and 28 atoms per unit cell.