First-order liquid-liquid phase transition in cerium

A. Cadien, Q. Y. Hu, Y. Meng, Y. Q. Cheng, M. W. Chen, J. F. Shu, H. K. Mao, H. W. Sheng

    研究成果: Article査読

    101 被引用数 (Scopus)

    抄録

    We report the first experimental observation of a liquid-liquid phase transition in the monatomic liquid metal cerium, by means of in situ high-pressure high-temperature x-ray diffraction experiments. At 13 GPa, upon increasing temperature from 1550 to 1900 K high-density liquid transforms to a low-density liquid, with a density difference of 14%. Theoretic models based on ab initio calculations are built to investigate the observed phase behavior of the liquids at various pressures. The results suggest that the transition primarily originates from the delocalization of f electrons and is deemed to be of the first order that terminates at a critical point.

    本文言語English
    論文番号125503
    ジャーナルPhysical review letters
    110
    12
    DOI
    出版ステータスPublished - 2013 3月 21

    ASJC Scopus subject areas

    • 物理学および天文学(全般)

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