High pressure generation and investigation of the spin transition of ferropericlase (Mg0.83Fe0.17)O
High pressure generation and investigation of the spin transition of ferropericlase (Mg0.83Fe0.17)O
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方镁石 (Mg0.83Fe0.17)O 的高压产生和自旋跃迁研究
DOI：
10.1088/1742-6596/215/1/012099
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
K Funakoshi
中科院分区：
文献类型：
--
作者：
E Ito;T Yoshino;D Yamazaki;A S Shatskiy;S Shan;X Guo;T Katsura;Y Higo;K Funakoshi
利用装有金刚石烧结体的Kawai池，结合（Mg_（0.83）Fe_（0.17））O（铁方镁石，Fp）的Fe ~（2+）自旋跃迁研究，尝试了高压产生。在安装在SPring-8的DIA型压力机SPEED mkII中挤压Kawai细胞。Fp和Au压力标准的体积同时确定通过原位X射线衍射使用同步辐射。根据安德森等人的研究，在300 K时可达到的最大压力已达到90 GPa。的Au标度[4]。在300 K和700 K温度下获得了（Mg_（0.83）Fe_（0.17））O在90 GPa压力下的P-V数据。通过对压缩数据的详细分析，我们认为自旋转变在300 K时的压力范围为50 ~ 70 GPa，在700 K时的压力范围为50 ~ 75 GPa。
High pressure generation has been tried by using the Kawai-cell equipped with sintered diamond cubes in conjunction with investigation of the spin transition in Fe2+ of (Mg0.83Fe0.17)O (ferropericlase, Fp). The Kawai-cell was squeezed in the DIA type press SPEED mkII installed at SPring-8. The volumes of the Fp and Au pressure standard were simultaneously determined by in situ X-ray diffraction using the synchrotron radiation. The maximum attainable pressure has reached 90 GPa at 300 K based on Anderson et al.'s Au scale [4]. The P-V data of (Mg0.83Fe0.17)O were acquired at 300 K and 700 K up to 90 GPa. From detailed analysis of the compression data, it is suggested that the spin transition proceeds over pressure ranges from 50 to 70 GPa at 300 K and from 50 to 75 GPa at 700 K.