...
首页> 外文期刊>Physica, B. Condensed Matter >Optical properties of superhard BC_5: First-principles calculations
【24h】

Optical properties of superhard BC_5: First-principles calculations

机译:超硬BC_5的光学特性:第一性原理计算

获取原文
获取原文并翻译 | 示例
           

摘要

BC_5 is a newly synthesized superhard material. We present a systematic investigation of optical properties of BC_5 in P3m1 and I-4m2 phases at ambient and high pressure in the framework of density functional theory with the generalized gradient approximation (GGA) in this paper. Optical properties such as dielectric function, refractive index, absorption, reflectivity and electron energy-loss spectrum are obtained successfully. The feature in the spectra of the optical parameters is discussed. Through calculation, we find BC_5 is optically anisotropic. Moreover, the dielectric function exhibits a large change at 70 GPa pressure for P3m1 BC _5 phase, but I-4m2 phase not, indicating the stable electronic structure that the I-4m2 phase possesses.
机译:BC_5是新合成的超硬材料。在本文中,我们采用密度泛函理论和广义梯度近似(GGA),对环境和高压下BC_5在P3m1和I-4m2相中的光学性质进行了系统的研究。成功地获得了介电函数,折射率,吸收率,反射率和电子能量损失谱等光学性质。讨论了光学参数光谱的特征。通过计算,我们发现BC_5是光学各向异性的。此外,对于P3m1 BC _5相,介电函数在70 GPa压力下表现出很大的变化,而对于I-4m2相则没有,表明I-4m2相具有稳定的电子结构。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号