稀土金属钬的静态压缩至282 GPa

IF 1.2 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

High Pressure Research Pub Date : 2020-07-02 DOI:10.1080/08957959.2020.1790552

Christopher S. Perreault, Y. Vohra

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引用次数: 6

摘要

摘要对稀土金属钬（Ho）到282的相变和状态方程进行了测量 GPa使用环形金刚石砧，从而将之前研究的压力范围扩大了一倍。第一组实验采用了标准的斜切金刚石砧，将铜作为x射线压力标准，达到217 GPa。第二组实验采用了环形金刚石砧，将铂作为x射线压力标准，达到282 GPa。最近提出的16原子正交结构（oF16）似乎在103到282之间是稳定的 GPa。标度轴向比（c/a）的变化范围很窄，为1.58 ± Ho至282的五个已知晶相为0.05 GPa。给出了Ho在三倍体积压缩V/Vo下的实验状态方程 = 0.322。

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Static compression of rare earth metal holmium to 282 GPa

ABSTRACT The phase transitions and equation of state measurements were carried out on rare earth metal Holmium (Ho) to 282 GPa using toroidal diamond anvils thereby doubling the pressure range to which it has been studied previously. The first set of experiment employed standard beveled diamond anvils utilizing copper as an x-ray pressure standard to 217 GPa. The second set of experiment employed toroidal diamond anvils utilizing platinum as an x-ray pressure standard to 282 GPa. The recently proposed 16-atom orthorhombic structure (oF16) appeared to be stable between 103 and 282 GPa. The scaled axial ratio (c/a) shows a narrow range of variation of 1.58 ± 0.05 for the five known crystalline phases of Ho to 282 GPa. The experimental equation of state of Ho is presented up to a threefold volume compression V/Vo = 0.322.

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来源期刊

High Pressure Research 物理-物理：综合

CiteScore

3.80

自引率

5.00%

发文量

审稿时长

2 months

期刊介绍： High Pressure Research is the leading journal for research in high pressure science and technology. The journal publishes original full-length papers and short research reports of new developments, as well as timely review articles. It provides an important forum for the presentation of experimental and theoretical advances in high pressure science in subjects such as: condensed matter physics and chemistry geophysics and planetary physics synthesis of new materials chemical kinetics under high pressure industrial applications shockwaves in condensed matter instrumentation and techniques the application of pressure to food / biomaterials Theoretical papers of exceptionally high quality are also accepted.