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The updated Zn–Sb phase diagram. How to make pure Zn13Sb10 (“Zn4Sb3”).
Dalton Transactions ( IF 3.5 ) Pub Date : 2018-08-02 00:00:00 , DOI: 10.1039/c8dt02521e
Chun-Wan Timothy Lo 1, 2, 3, 4 , Volodymyr Svitlyk 5, 6, 7 , Dmitry Chernyshov 5, 6, 7 , Yurij Mozharivskyj 1, 2, 3, 4
Affiliation  

The Zn–Sb system contains two well-known thermoelectric materials, Zn1−δSb and Zn13−δSb10 (“Zn4Sb3”), and two other phases, Zn9−δSb7 and Zn3−δSb2, stable only at high temperatures. The current work presents the updated phases diagram constructed using the high-temperature diffraction studies and elemental analysis. All phases are slightly Zn deficient with respect to their stoichiometric compositions, which is consistent with their p-type charge transport properties. Either at room or elevated temperatures, Zn1−δSb and Zn13−δSb10 display deficiencies of the main Zn sites and partial Zn occupancy of the other interstitial sites. A phase pure Zn13−δSb10 sample can be obtained from the Zn13Sb10 loading composition, and there is no need to use a Zn-richer composition such as Zn4Sb3. While the Zn13−δSb10 phase is stable till its decomposition temperature of 515 °C, it may incorporate some additional Zn around 412 °C, if elemental Zn is present.

中文翻译:

更新的Zn-Sb相图。如何制备纯的Zn 13 Sb 10(“ Zn 4 Sb 3 ”)。

中的Zn-Sb的系统包含两个公知的热电材料,锌1- δ的Sb和Zn 13- δ的Sb 10(“锌4的Sb 3 ”),和其它两个相,锌9- δ7和Zn 3- δ Sb 2,仅在高温下稳定。当前的工作提出了使用高温衍射研究和元素分析构建的更新的相图。就其化学计量组成而言,所有相均略微缺乏锌,这与它们的p型电荷传输性质一致。室温或高温下Zn 1− δ的Sb和Zn 13- δ SB 10的主要锌位点和其它点间的局部的Zn占用的显示缺陷。纯Zn A相13- δ的Sb 10样品可以从锌中获得13的Sb 10装载组合物,并且也没有必要使用Zn的更丰富的组合物如Zn 4 Sb的3。而锌13- δ10相稳定的,直到515℃,其分解温度,它也可以包含一部分额外的Zn周围412°C,如果元素的Zn的存在。
更新日期:2018-08-02
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