Crystallographic phases in heavy rare earth metals under megabar pressures

被引：6

作者：

Samudrala, G. K. ^{[1
]}

Vohra, Y. K. ^{[1
]}

机构：

[1] Univ Alabama Birmingham, Dept Phys, Birmingham, AL 35294 USA

来源：

23RD INTERNATIONAL CONFERENCE ON HIGH PRESSURE SCIENCE AND TECHNOLOGY (AIRAPT-23) | 2012年 / 377卷

关键词：

D O I：

10.1088/1742-6596/377/1/012111

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Experiments aimed at understanding the crystallographic phases of heavy rare earth metals were carried out in a diamond anvil cell at the Advanced Photon Source, Argonne National Laboratory. Heavy rare earth metals dysprosium (Dy), holmium (Ho), erbium (Er) and thulium (Tm) were compressed to multi-megabar pressures. The rare earth crystal sequence hcp -> Sm-type -> dhcp -> distorted-fcc (dfcc) is observed in all four elements. Upon further compression, a structural transformation to a monoclinic C2/m phase has been observed. We summarize the results from these experiments and present Rietveld structural refinements on high pressure phases for the specific case of dysprosium.

引用

页数：4

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