机械强和热力学稳定的FeSc2Z4 (Z=S,Se) 旋转器用于未来的旋转电子架构
Ateeq Anwar1, N A Noor1, Ghulam M Mustafa2
1Department of Physics, University of Sargodha 40100 Sargodha Pakistan naveed.noor@uos.edu.pk.
RSC advances
|September 29, 2025
概括
这项研究探讨了FeSc2(S,Se) 4旋转器用于旋转电子. 在压力下,FeSc2S4表现出更高的稳定性和过渡到半金属铁磁状态,这表明下一代电子设备的潜力.
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
- 固态化学 固态化学
背景情况:
- 螺旋电子利用螺旋极化在材料中进行先进的电子.
- 具有内在磁性排序的半导体和金属是自旋电子应用的关键.
- FeSc2Z4 (Z = S, Se) 旋化合物是旋材料的候选物.
研究的目的:
- 系统地研究FeSc2(S,Se) 4螺旋体的结构,机械,电子和热力学特性.
- 评估它们的稳定性和用于自旋电子和磁电电子应用的潜力.
- 了解压力对它们电子和磁性行为的影响.
主要方法:
- 密度函数理论 (DFT) 使用WIEN2k代码.
- 计算结构参数,形成度,声子频率,弹性常数和电子带结构.
- 准和的德拜模型 (GIBBS2框架) 应用于热力学分析.
主要成果:
- 计算的格子常数与实验值一致.
- FeSc2S4具有较高的热力学稳定性,具有负形成热量.
- 这两种螺旋管在结构上都稳定,具有正声频率,并且表现出机械强度.
- 电子特性显示,在压力下,带隙减少,FeSc2S4过渡到半金属铁磁状态.
- 观察到铁磁行为,其总磁矩为每方程式单位4.00μB.
- 热力学分析显示了良好的热稳定性和振动完整性.
结论:
- FeSc2(S,Se) 4螺旋具有有利的结构,机械和热力学特性.
- 在压力下,FeSc2S4显示出作为半金属铁磁体的潜力.
- 这些材料对自旋电子和磁电子设备的应用非常有前途.
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