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2023年

第1回DXMag-DxMT特別セミナーが開催されました

2023年12月8日(金)

The 1st DXMag-DxMT Special Seminar





Disordered enthalpy-entropy descriptor for high-entropy ceramics discovery

Dr. Stefano Curtarolo


Edmund T. Pratt Jr. School Distinguished Professor
Materials Science, Electrical Engineering and Physics Director, 
Center for Autonomous Materials Design, Duke University
 
Date & Time: 10:00-11:30, December 8th (Fri), 2023.
Place: 1st Conference Room, 1st floor, Sengen.

Abstract

The need for improved functionalities in extreme environments is fueling interest in high-entropy ceramics. Except for the computational discovery of high-entropy carbides, performed with the entropy-forming-ability descriptor, most innovation has been slowly driven by experimental means. Hence, advancement of the field is in need of more theoretical contributions. Here, we introduce DEED (Disordered Enthalpy-Entropy Descriptor), a descriptor that captures the balance between entropy gains and enthalpy costs, allowing the correct classification of functional synthesizability of multi-component ceramics, regardless of chemistry and structure. To make our calculations possible, we have developed a convolutional algorithm that drastically reduces computational resources. Moreover, DEED guided the experimental discovery of new single-phase high-entropy carbonitrides and borides. This work, integrated into the AFLOW computational ecosystem, provides an array of potential novel candidates, ripe for experimental discoveries.

Contact

Planning Office of DXMag
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