Thermodynamic limit for synthesis of metastable inorganic materials.

Thermodynamic limit for synthesis of metastable inorganic materials.
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DOI:
10.1126/sciadv.aaq0148
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发表时间:
2018-04
期刊:
影响因子:
13.6
通讯作者:
Persson KA
Persson KA
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Aykol M;Dwaraknath SS;Sun W;Persson KA

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Amorphous forms serve as thermodynamic upper bounds on the free energy scale for synthesis of metastable crystalline polymorphs. Realizing the growing number of possible or hypothesized metastable crystalline materials is extremely challenging. There is no rigorous metric to identify which compounds can or cannot be synthesized. We present a thermodynamic upper limit on the energy scale, above which the laboratory synthesis of a polymorph is highly unlikely. The limit is defined on the basis of the amorphous state, and we validate its utility by effectively classifying more than 700 polymorphs in 41 common inorganic material systems in the Materials Project for synthesizability. The amorphous limit is highly chemistry-dependent and is found to be in complete agreement with our knowledge of existing polymorphs in these 41 systems, whether made by the nature or in a laboratory. Quantifying the limits of metastability for realizable compounds, the approach is expected to find major applications in materials discovery.
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