...
首页> 外文期刊>Physica, B. Condensed Matter >Pressure-induced structural phase transition an actinide nitrides: Ab initio calculations
【24h】

Pressure-induced structural phase transition an actinide nitrides: Ab initio calculations

机译:压力诱导的结构相变an系氮化物:从头算

获取原文
获取原文并翻译 | 示例
           

摘要

We report ab initio calculations of pressure-induced structural phase transition and electronic properties of the NaCl-type actinide nitrides namely AnN (An=Np and Cm). The total energy as a function of volume is obtained using the self-consistent tight-binding linear muffin tin orbital (TB-LMTO) method by performing spin and non-spin-polarized calculations. Magnetically the AnN compounds are stable in ferromagnetic (FM) state at ambient condition. From the present study, we predict a structural phase transition from ferromagnetic (FM) NaCl-type (B1 phase) structure to ferromagnetic CsCl-type (B2 phase) structure for these in the pressure range of 80.0-50.0 GPa. The pressure-induced transition is found to be first order. The band structure and density of states (DOS) are reported in both FM-B1 phase and FM-B2 phase. The ground-state properties such as magnetic moment, lattice parameter and bulk modulus are calculated and compared with the available theoretical and experimental results.
机译:我们报告了从头算的压力诱导结构相变和NaCl型act系元素氮化物即AnN(An = Np和Cm)的电子性能的计算。通过执行自旋和非自旋极化计算,使用自洽紧密结合的线性松饼锡轨道(TB-LMTO)方法可获得作为体积函数的总能量。在环境条件下,磁性AnN化合物在铁磁(FM)状态下稳定。从目前的研究中,我们预测在80.0-50.0 GPa的压力范围内,这些结构会从铁磁(FM)NaCl型(B1相)结构转变为铁磁CsCl型(B2相)结构。发现压力引起的转变是一阶的。在FM-B1相和FM-B2相中都报告了能带结构和状态密度(DOS)。计算基态属性,例如磁矩,晶格参数和体积模量,并将其与可用的理论和实验结果进行比较。

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