Synchrotron X-ray Study of Iron at High Pressure and Temperature
Synchrotron X-ray Study of Iron at High Pressure and Temperature
复制标题
高压高温下铁的同步加速器 X 射线研究
DOI：
10.1126/science.269.5231.1703
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发表时间：
1995
期刊：
影响因子：
56.9
通讯作者：
Ho
中科院分区：
文献类型：
--
作者：
Surendra K. Saxena;Leonid Dubrovinsky;P. Häggkvist;Y. Cerenius;Guoyin Shen;Ho
X射线同步加速器原位激光加热铁的实验表明，高压ε相，一个六方密排(Hcp)结构，在大约38千兆卡的压力和1200到1500开尔文的温度下，转变成另一个相(可能是一个多型双层hcp)。这一信息对地核中铁的相关系有一定的影响。
X-ray synchrotron experiments with in situ laser heating of iron in a diamond-anvil cell show that the high-pressure ε phase, a hexagonal close-packed (hcp) structure, transforms to another phase (possibly a polytype double-layer hcp) at a pressure of about 38 gigapascals and at temperatures between 1200 and 1500 kelvin. This information has implications for the phase relations of iron in Earth's core.