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High-Pressure Synthesis and Local Structure of Corundum-Type In2−2x Zn x Sn x O3 (x ≤ 0.7)
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2010-11-01 , DOI: 10.1021/ja106048x
Cathleen A. Hoel 1 , José Manuel Gallardo Amores 1 , Emilio Morán 1 , Miguel Angel Álario-Franco 1 , Jean-François Gaillard 1 , Kenneth R. Poeppelmeier 1
Affiliation  

The corundum-type In(2-2x)Zn(x)Sn(x)O(3) solid solution (cor-ZITO, x ≤ 0.7) was synthesized at 1000 °C under a high pressure of 70 kbar. cor-ZITO is a high-pressure polymorph of the transparent conducting oxide bixbyite-In(2-2x)Zn(x)Sn(x)O(3) (x ≤ 0.4). Analysis of the extended X-ray absorption fine structure suggests that significant face-sharing of Zn and Sn octahedra occurs, as expected for the corundum structure type. In contrast to the ideal corundum structure, however, Zn and Sn are displaced and form oxygen bonds with lengths that are similar to those observed in high-pressure ZnSnO(3). Powder X-ray diffraction patterns of cor-ZITO showed the expected unit cell contraction with increased cosubstitution, but no evidence for ilmenite-type ordering of the substituted Zn and Sn. A qualitative second harmonic generation measurement, for the solid solution x = 0.6 and using 1064 nm radiation, showed that Zn and Sn adopt a polar LiNbO(3)-type arrangement.

中文翻译:

刚玉型 In2−2x Zn x Sn x O3 (x ≤ 0.7) 的高压合成和局部结构

刚玉型 In(2-2x)Zn(x)Sn(x)O(3) 固溶体(cor-ZITO,x ≤ 0.7)是在 1000 °C、70 kbar 的高压下合成的。cor-ZITO 是透明导电氧化物方铁锰矿-In(2-2x)Zn(x)Sn(x)O(3) (x ≤ 0.4) 的高压多晶型物。对扩展的 X 射线吸收精细结构的分析表明,正如刚玉结构类型所预期的那样,发生了 Zn 和 Sn 八面体的显着共享面。然而,与理想的刚玉结构相反,Zn 和 Sn 被置换并形成氧键,其长度与在高压 ZnSnO(3) 中观察到的相似。cor-ZITO 的粉末 X 射线衍射图显示出预期的晶胞收缩,共取代增加,但没有证据表明取代的 Zn 和 Sn 的钛铁矿型排序。定性二次谐波产生测量,
更新日期:2010-11-01
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