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Synthesis of an orthorhombic high pressure boron phase |
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| Authors: | Evgeniya Yu Zarechnaya Leonid Dubrovinsky Natalia Dubrovinskaia Nobuyoshi Miyajima Yaroslav Filinchuk Dmitry Chernyshov Vladimir Dmitriev |
| Affiliation: | 1.Bayerisches Geoinstitut, Universität Bayreuth, 95440 Bayreuth, Germany;2.Institute of Earth Sciences, Universität Heidelberg, Im Neuenheimer Feld 236, 69120 Heidelberg, Germany;3.Swiss Norwegian Beam lines at ESRF, 38043 Gernoble, France |
| Abstract: | 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 ∼1800 °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. |
| Keywords: | boron high-pressure high-temperature crystal structure |