Incommensurate-to-incommensurate phase transition in Eu metal at high pressures
Incommensurate-to-incommensurate phase transition in Eu metal at high pressures
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高压下 Eu 金属的不通约到不通约相变
DOI：
10.1103/physrevb.90.214105
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发表时间：
2014
影响因子：
3.7
通讯作者：
Husband R
中科院分区：
文献类型：
--
作者：
Husband R
高压x射线粉末衍射实验在金属铕上进行。在38 GPa以上，铕从连续调制的Eu-IV相转变为具有连续调制的晶体结构Eu-V的第二相。这是高压下元素中以前未见过的连续调制到连续调制的转变。高压高温实验也进行了高达449 K，以作出初步估计的位置的无公度相的相边界。
High pressure x-ray powder-diffraction experiments were performed on europium metal up to. Above 38 GPa, europium transforms from the incommensurately modulated Eu-IV phase to a second phase with an incommensurately modulated crystal structure, Eu-V. This is a previously unseen incommensurately modulated to incommensurately modulated transition in the elements at high pressure. High-pressure high-temperature experiments were also performed up to 449 K in order to make an initial estimate of the positions of the phase boundaries of the incommensurate phases.