In situ study on the formation of FeTe
In situ study on the formation of FeTe
复制标题
DOI：
10.1007/s10853-011-5348-4
复制
发表时间：
2011-02
影响因子：
4.5
通讯作者：
J. Grivel;A. Wulff;Y. Zhao;J. Bednarčík;M. Zimmermann
中科院分区：
文献类型：
--
作者：
J. Grivel;A. Wulff;Y. Zhao;J. Bednarčík;M. Zimmermann
用高能同步辐射X射线衍射技术研究了Fe和Te粉末混合物中FeTe化合物的原位形成过程。碲化铁不是直接从起始元素形成的，而是作为中间产物形成的。在2 °C/min的升温过程中，Te首先在200 ° C和350 °C之间与部分Fe粉末反应以形成FeTe 2，然后FeTe 2在350 ° C和530 °C之间与剩余的Fe进一步反应以产生FeTe。这种相形成的路径是简单的，比在FeSe的情况下，这两个系统的平衡相图的差异进行了讨论。
The formation of the FeTe compound from a mixture of Fe and Te powders was studied in situ by means of high-energy synchrotron X-ray diffraction. FeTe does not form directly from the starting elements; instead, FeTe2forms as an intermediate product. During a 2 °C/min heating ramp, Te first reacts between 200 and 350 °C with a part of the Fe powder to form FeTe2, which then further reacts between 350 and 530 °C with the remaining Fe to yield FeTe. This phase formation path is simpler than in the case of FeSe and the differences are discussed in terms of the equilibrium phase diagrams of these two systems.