Near-equilibrium polymorphic phase transformations in praseodymium under dynamic compression
Near-equilibrium polymorphic phase transformations in praseodymium under dynamic compression
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DOI：
10.1063/1.2732831
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发表时间：
2007-04-23
影响因子：
4
通讯作者：
Reisman, D. B.
中科院分区：
文献类型：
--
作者：
Bastea, Marina;Reisman, D. B.
作者报告了使用斜波动态压缩的镨中发生的顺序、多重多态相变的首次实验观察。实验还显示了压力释放时发生的逆向变换的特征，并揭示了小磁滞回线的存在。结果与使用热力学一致的镨多相状态方程进行的平衡流体动力学计算非常一致，表明其具有接近平衡的转变行为。 (c) 2007 年美国物理研究所。
The authors report the first experimental observation of sequential, multiple polymorphic phase transformations occurring in praseodymium dynamically compressed using a ramp wave. The experiments also display the signatures of reverse transformations occurring upon pressure release and reveal the presence of small hysteresis loops. The results are in very good agreement with equilibrium hydrodynamic calculations performed using a thermodynamically consistent, multiphase equation of state for praseodymium, suggesting a near-equilibrium transformation behavior. (c) 2007 American Institute of Physics.