同种类的
氧化物
熵(时间箭头)
组态熵
物质状态
材料科学
化学物理
统计物理学
热力学
化学
物理
凝聚态物理
冶金
作者
Christina M. Rost,Edward Sachet,Trent Borman,Ali Moballegh,Elizabeth C. Dickey,Dong Hou,Jacob L. Jones,Stefano Curtarolo,Jon‐Paul Maria
摘要
Abstract Configurational disorder can be compositionally engineered into mixed oxide by populating a single sublattice with many distinct cations. The formulations promote novel and entropy-stabilized forms of crystalline matter where metal cations are incorporated in new ways. Here, through rigorous experiments, a simple thermodynamic model, and a five-component oxide formulation, we demonstrate beyond reasonable doubt that entropy predominates the thermodynamic landscape, and drives a reversible solid-state transformation between a multiphase and single-phase state. In the latter, cation distributions are proven to be random and homogeneous. The findings validate the hypothesis that deliberate configurational disorder provides an orthogonal strategy to imagine and discover new phases of crystalline matter and untapped opportunities for property engineering.
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