Reexamination of the crystal structure of a high‐pressure phase in praseodymium metal

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Reexamination of the crystal structure of a high‐pressure phase in praseodymium metal

机译：重新检查金属中高压相的晶体结构

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H. K. Mao, R. M. Hazen, P. M. Bell, and J. Wittig [J. Appl. Phys. 52, 4572 (1981)] reported that praseodymium metal undergoes a crystallographic phase transformation from a distorted fcc structure to a distorted hcp structure at a pressure of ∼21 GPa. This phase change, further, is accompanied by a large volume decrease ∼19%. We have reexamined their powder diffraction data for the distorted hcp structure and find the data can be satisfactorily interpreted in terms of the well‐known orthorhombic α‐uranium type of structure. The volume decrease at the phase change is now estimated to be only ∼9.8%.

机译：H. K. Mao，R。M. Hazen，P.M。Bell和J. Wittig [J.应用物理52，4572（1981）]报道that金属在〜21 GPa的压力下从扭曲的fcc结构转变为扭曲的hcp结构。此外，这种相变伴随着大的体积减小〜19％。我们针对扭曲的hcp结构重新检查了其粉末衍射数据，发现该数据可以用众所周知的斜方晶α-铀类型的结构来令人满意地解释。现在估计在相变处的体积减小仅为〜9.8％。

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《Journal of Applied Physics》 |1982年第12期|P.9212-9213|共2页
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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Reexamination of the crystal structure of a high‐pressure phase in praseodymium metal

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