Kinetics and systematics of structural phase transitions in the regular lanthanide metals under pressure
Kinetics and systematics of structural phase transitions in the regular lanthanide metals under pressure
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压力下常规镧系金属结构相变的动力学和系统学
DOI：
10.1080/08957959008203173
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发表时间：
1990
影响因子：
2
通讯作者：
W. Holzapfel
中科院分区：
文献类型：
--
作者：
T. Krüger;B. Merkau;W. A. Grosshans;W. Holzapfel
摘要 介绍了在 58 GPa 压力和 200 K 至 520 K 温度下镧系元素结构相变动力学和滞后的研究技术和结果。转变速率表现出与扩散控制跃迁相同的时间依赖性，然而，这种时间依赖性的其他解释也是可能的。 0 K 平衡转变压力的估计是根据活化自由能 A、G 的压力和温度依赖性得出的。所有规则镧系元素在不同相变时的临界半径比 Rux/R5p 的比较显示了镧系元素高压行为的简单系统性。
Abstract Techniques and results of studies on the kinetics and hysteresis of the structural phase transitions in lanthanides under pressures up to 58 GPa and temperatures between 200 K and 520 K are presented. The transformation rates show the same time dependence as for diffusion controlled transitions, however, other interpretations of this time dependence are also possible. Estimates of the 0 K equilibrium transition pressures are derived from the pressure and temperature dependence of the activation free energies A, G. A comparison of critical radius ratios, Rux/R5p for all the regular lanthanides at the various phase transitions shows simple systematics in the high pressure behaviour of the lanthanides.