可解释的推引擎来预测复杂的金属间物质:Gd10RuCd3的合成和特征,一个中子吸收材料
Brook Xhabrahimi1, Emil I Jaffal1,2, Danila Shiryaev1
1Department of Chemistry, Hunter College, City University of New York, New York, New York 10065, United States.
Journal of the American Chemical Society
|September 26, 2025
概括
研究人员开发了一种材料信息学工具来发现中子吸收材料. 预测和合成了Gd10RuCd3,显示出出色的中子吸收特性和低导热性.
科学领域:
- 材料科学
- 计算材料科学
- 核工程
背景情况:
- 开发先进的中子吸收材料对于核应用至关重要.
- 发现新材料的传统方法往往耗时且资源密集.
- 材料信息学和机器学习为加速材料发现提供了强大的工具.
研究的目的:
- 开发和使用基于材料信息学的推引擎来识别新型中子吸收材料.
- 预测,合成和实验验证RE10MCd3系列中的新三元化合物Gd10RuCd3.
- 研究合成的Gd10RuCd3的结构,热和中子吸收特性.
主要方法:
- 使用基于部分最小平方差异分析 (PLS-DA) 的推引擎进行晶体学位置偏好分类.
- 在预测框架内采用了三种可解释的方法 (无限制,保守,集群).
- 进行高温合成,X射线衍射 (单晶和粉末),运输属性测量和密度函数理论 (DFT) 分析.
主要成果:
- Gd10RuCd3被成功预测为顶级候选物,并通过实验合成.
- 合成的材料具有异常低的导热率 (5-7 W·m-1 K-1),并且在600-800°C之间具有潜在的结构过渡.
- DFT分析显示了0D电极现象,中子截面计算表明Gd10RuCd3在中子吸收器中排名前0.4%.
结论:
- 由于其高中子吸收截面和低导热性,Gd10RuCd3是一种有前途的新型中子吸收材料.
- 开发的材料信息学推引擎有效地预测了具有可取性质的新材料.
- 负热膨胀和高质量吸收的结合使得Gd10RuCd3对中子吸收应用具有吸引力.
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