A new class of high-entropy perovskite oxides
نویسندگان
چکیده
Article history: Received 8 July 2017 Received in revised form 8 August 2017 Accepted 23 August 2017 Available online xxxx 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)O3, Sr(Zr0.2Sn0.2Ti0.2Hf0.2Nb0.2)O3, Ba(Zr0.2Sn0.2Ti0.2Hf0.2Ce0.2)O3, Ba(Zr0.2Sn0.2Ti0.2Hf0.2Y0.2)O3 − x, Ba(Zr0.2Sn0.2Ti0.2Hf0.2Nb0.2)O3 and (Sr0.5Ba0.5)(Zr0.2Sn0.2Ti0.2Hf0.2Nb0.2)O3, can form homogeneous single solidsolution 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 solutionswith distinct andhighly-tunable chemistries can enable simultaneous tailoring ofmultiple properties and potentially lead to new functionality. © 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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تاریخ انتشار 2017