A new class of high-entropy perovskite oxides
A new class of high-entropy perovskite oxides
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DOI：
10.1016/j.scriptamat.2017.08.040
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发表时间：
2018-01-01
影响因子：
6
通讯作者：
Luo, Jian
中科院分区：
文献类型：
--
作者：
Jiang, Sicong;Hu, Tao;Luo, Jian
一类新的高熵钙钛矿氧化物（即，具有高构型熵的多阳离子固溶体）。13种成分中的6种，包括Sr（Zr0.2Sn0.2Ti0.2Hf0.2Mn0.2）O-3，硅（Zr0.2Sn0.2Ti0.2Hf0.2Mn0.2）O-3、Ba（Zr0.2Sn0.2Ti0.2Hf0.2Mn0.2）O-3、Ba（Zr0.2Sn0.2Ti0.2Hf0.2Mn0.2）O-3 - x、Ba（Zr0.2Sn0.2Ti0.2Hf0.2Mn0.2）O-3和（Sr（0.5）Ea（0.5））（Zr0.2Sn0.2Ti0.2Hf0.2Mn0.2）O-3可形成均匀的单一固溶体相。影响钙钛矿固溶体形成和温度稳定性的因素不是阳离子尺寸差，而是Goldschleman容限因子。这种新型的多组分（高熵）钙钛矿固溶体具有独特的和高度可调的化学性质，可以同时定制多种特性，并可能导致新的功能。(C)2017 Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
A new class of high-entropy perovskite oxides (i.e., multiple-cation solid solutions with high configurational entropies) has been synthesized. Six of the 13 compositions examined, including Sr(Zr0.2Sn0.2Ti0.2Hf0.2Mn0.2)O-3, SI(Zr0.2Sn0.2Ti0.2Hf0.2Mn0.2)O-3, Ba(Zr0.2Sn0.2Ti0.2Hf0.2Mn0.2)O-3, Ba(Zr0.2Sn0.2Ti0.2Hf0.2Mn0.2)O-3 - x, Ba(Zr0.2Sn0.2Ti0.2Hf0.2Mn0.2)O-3 and (Sr(0.5)Ea(0.5))(Zr0.2Sn0.2Ti0.2Hf0.2Mn0.2)O-3, can form homogeneous single solid solution phases. Goldschmidt's tolerance factor, instead of cation-size difference, influences the formation and temperature-stability of single cubic perovskite solid solutions. This new class of multicoMponent (high-entropy) perovskite solid solutions with distinct and highly-tunable chemistries can enable simultaneous tailoring of multiple properties and potentially lead to new functionality. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.