在不同的多类型阶段对二元金属间化合物NdMn2进行DFT研究
Murad Murad1, Zahid Ali2,3, Shahid Mehmood1
1Department of Physics, University of Malakand, Chakdara, Dir (Lower), 18800, KP, Pakistan.
Journal of molecular modeling
|January 27, 2025
概括
这项研究研究了NdMn2多型,发现C36相具有较低电阻的抗铁磁性. 该C14相表现出优良的机械性能,表明其适用于要求高强度和耐久性要求的苛刻应用.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 计算材料科学科学 计算材料科学
背景情况:
- 在C15,C14,C36多型相中研究了NdMn2的结构稳定性,磁顺序,电子,弹性和热电性质.
- 磁性易感性表明C36中的反铁磁 (AFM) 顺序和C14/C15阶段的偏磁 (PM).
- 通过带形状和电阻力,通过所有相验证金属性质.
研究的目的:
- 综合调查 NdMn2 在其不同多类型相中的物理性质.
- 为了确定 NdMn2 多种类型的磁性排序和电子行为.
- 根据其弹性特性来评估NdMn2的机械稳定性和潜在应用.
主要方法:
- 采用密度函数理论 (DFT) 进行综合性质调查.
- 使用BoltzTraP代码进行磁感应和电阻计算.
- 在WIEN2k软件中使用IRELAST代码计算弹性常数.
主要成果:
- NdMn2在C36阶段表现出AFM,在C14/C15阶段表现出PM.
- 所有的多类型都表现出金属的行为;C36相具有最低的电阻.
- C14阶段显示出高的Young和Bulk模块,表明机械强度.
结论:
- NdMn2多种类型具有不同的磁性和电子性质.
- 对于受益于较低电阻的应用,C36阶段是有前途的.
- 碳-14相是高强度,耐久材料应用的强有力的候选者.
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