东北磁性材料材料数据库的磁性材料数据库
Suman Itani1, Yibo Zhang1,2, Jiadong Zang3
1Deparment of Physics and Astronomy, University of New Hampshire, Durham, USA.
Nature communications
|October 24, 2025
概括
研究人员使用大型语言模型 (LLM) 开发了东北材料数据库 (NEMAD),以加速发现高性能磁性材料. 这个数据库能够准确地预测磁性质,识别出有前途的新材料用于先进的应用.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 计算材料科学科学 计算材料科学
背景情况:
- 高性能磁性材料对于先进技术至关重要.
- 现有的数据驱动方法受到不完整和不准确的材料数据库的阻碍.
- 开发全面的,基于实验的数据库对于加速材料发现至关重要.
研究的目的:
- 使用大型语言模型 (LLM) 创建一个全面的,基于实验的磁性材料数据库.
- 为了实现材料发现的磁性属性的准确分类和预测.
- 为了识别具有高操作温度范围的新型磁性材料.
主要方法:
- 利用大型语言模型 (LLM) 来从实验源中自动提取数据.
- 开发了东北材料数据库 (NEMAD) 拥有67573条条目,包括组成,磁性和结构数据.
- 训练有素的机器学习模型用于材料分类 (铁磁,反铁磁,非磁) 和过渡温度预测.
主要成果:
- NEMAD数据库为磁性材料研究提供了丰富的资源.
- 机器学习分类实现了90%的准确性.
- 回归模型准确地预测了基里 (尼尔) 温度,R2值为0.87 (0.83).
- 确定了25种铁磁性材料和13种反铁磁性材料的候选材料,预测过渡温度高.
结论:
- 简单的LLM可以有效地自动化数据提取,以创建全面的材料数据库.
- 在NEMAD上训练的机器学习模型可以加速发现新型磁性材料.
- 这种方法证明了发现高工作温度磁性材料的可行途径.
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