The updated Zn–Sb phase diagram. How to make pure Zn13Sb10 (“Zn4Sb3”).,Dalton Transactions

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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, Zn_1−δSb and Zn_13−δSb₁₀ (“Zn₄Sb₃”), and two other phases, Zn_9−δSb₇ and Zn_3−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, Zn_1−δSb and Zn_13−δSb₁₀ display deficiencies of the main Zn sites and partial Zn occupancy of the other interstitial sites. A phase pure Zn_13−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 Zn_13−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- δ}锑₇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- δ}锑₁₀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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