...
首页> 外文期刊>Physical review >Elastic properties of Pu metal and Pu-Ga alloys
【24h】

Elastic properties of Pu metal and Pu-Ga alloys

机译:Pu金属和Pu-Ga合金的弹性

获取原文
获取原文并翻译 | 示例
           

摘要

We present elastic properties, theoretical and experimental, of Pu metal and Pu-Ga (δ) alloys together with ab initio equilibrium equation of state for these systems. For the theoretical treatment we employ density-functional theory in conjunction with spin-orbit coupling and orbital polarization for the metal and coherent-potential approximation for the alloys. Pu and Pu-Ga alloys are also investigated experimentally using resonant ultrasound spectroscopy. We show that orbital correlations become more important proceeding from α→β → γ plutonium, thus suggesting increasing f-electron correlation and a corresponding softening of the elastic moduli. For the δ-Pu-Ga alloys we find a softening with larger Ga content, i.e., atomic volume, bulk modulus, and elastic constants imply a weakened chemical bonding with addition of Ga. Our measurements confirm qualitatively the theory but uncertainties remain when comparing the model with experiments.
机译:我们介绍了Pu金属和Pu-Ga(δ)合金的理论和实验弹性以及这些系统的从头算起的平衡态方程。对于理论处理,我们采用密度泛函理论,结合金属的自旋轨道耦合和轨道极化,以及合金的相干势近似。还使用共振超声光谱对Pu和Pu-Ga合金进行了实验研究。我们表明,轨道相关性从α→β→γbecome开始变得更加重要,因此表明f电子相关性增加,并且弹性模量相应变软。对于δ-Pu-Ga合金,我们发现Ga含量较高时会发生软化,即原子量,体积模量和弹性常数暗示着添加Ga会削弱化学键。我们的测量结果从理论上证实了这一点,但是当比较实验模型。

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