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arXiv 2407.11208cond-mat.mtrl-sciphysics.comp-ph
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机器学习加速预测含拮抗性元素对的铈基三元化合物

Machine learning accelerated prediction of Ce-based ternary compounds involving antagonistic pairs

Weiyi Xia, Wei-Shen Tee, Paul C. Canfield, Fernando Assis Garcia, Raquel D Ribeiro, Yongbin Lee, Liqin Ke, Rebecca Flint, Cai-Zhuang Wang

AI总结:

本研究结合 CGCNN 机器学习框架与第一性原理计算,探索 Ce 对 Fe-Bi/Pb/In/Ag 拮抗对的稳定作用,预测出 9 种稳定和 37 种亚稳三元化合物。

摘要:

在含有拮抗性元素对(例如 Fe 与 Bi、Pb、In 和 Ag)的三元相空间中发现新型量子材料,既面临重大挑战,也具有巨大潜力。在本研究中,我们通过引入铈(Ce)这一储量丰富且具有成本效益的稀土元素,研究这些不混溶元素对的稳定化。通过采用机器学习(ML)引导的框架,尤其是晶体图卷积神经网络(CGCNN),并结合第一性原理计算,我们高效探索了组成/结构空间,预测出 9 种稳定和 37 种亚稳的 Ce-Fe-X(X=Bi、Pb、In 和 Ag)三元化合物。我们的发现包括识别出多种新的稳定相和亚稳相,并对其结构和能量性质进行了评估。这些发现不仅推动了量子材料的发展,也为关键稀土元素提供了可行的替代品,突显了 Ce 基金属间化合物在技术应用中的重要性。

英文摘要:

The discovery of novel quantum materials within ternary phase spaces containing antagonistic pair such as Fe with Bi, Pb, In, and Ag, presents significant challenges yet holds great potential. In this work, we investigate the stabilization of these immiscible pairs through the integration of Cerium (Ce), an abundant rare-earth and cost-effective element. By employing a machine learning (ML)-guided framework, particularly crystal graph convolutional neural networks (CGCNN), combined with first-principles calculations, we efficiently explore the composition/structure space and predict 9 stable and 37 metastable Ce-Fe-X (X=Bi, Pb, In and Ag) ternary compounds. Our findings include the identification of multiple new stable and metastable phases, which are evaluated for their structural and energetic properties. These discoveries not only contribute to the advancement of quantum materials but also offer viable alternatives to critical rare earth elements, underscoring the importance of Ce-based intermetallic compounds in technological applications.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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