Synthesis of Dense BCx Phases under High-Pressure and High-Temperature

被引：9

作者：

Ming, L. C. ^{[1
]}

Zinin, P. V. ^{[1
]}

Liu, X. R. ^{[2
]}

Nakamoto, Y. ^{[3
]}

Jia, R. ^{[1
]}

机构：

[1] Univ Hawaii, Hawaii Inst Geophys & Planetol, Honolulu, HI 96822 USA

[2] Southwest Jiaotung Univ, High Pressure Lab, Chengdu, Sichuan, Peoples R China

[3] Osaka Univ, Ctr Quantum Sci & Technol Extreme Condit, Toyonaka, Osaka 5608531, Japan

来源：

INTERNATIONAL CONFERENCE ON HIGH PRESSURE SCIENCE AND TECHNOLOGY, JOINT AIRAPT-22 AND HPCJ-50 | 2010年 / 215卷

关键词：

DIAMOND;

D O I：

10.1088/1742-6596/215/1/012135

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We synthesized a new phase from the B-C system, cubic BC4 (c-BC4), by direct transformation from graphitic phases at a pressure of 44 GPa and a temperature 2020 K in a laser-heated diamond anvil cell (DAC). Both x-ray diffraction and Raman spectroscopy confirm the presence of cubic BC4 from the sample recovered at ambient conditions. The zero-pressure lattice parameter of the c-BC4 calculated from diffraction peaks was found to be 3.587 angstrom. The composition of the new phase is determined from electron microprobe (EMP) measurements. The value of the C/B ratio is around 4 (3.91 +/- 0.26).

引用

页数：5

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