一种散装形式的基于Cu的铁磁半导体 (La,Ba) ((Cu,Mn) SO,其基里温度高达170K
Jinou Dong1, Cui Ding1, Xueqin Zhao1
1Zhejiang Province Key Laboratory of Quantum Technology and Device and School of Physics, Zhejiang University, Hangzhou, 310027, China.
Scientific reports
|September 5, 2023
概括
研究人员在一个新的基于铜的磁性半导体中发现了铁磁性, (La,Ba) ((Cu,Mn) SO.SO. 这种材料表现出由载体介导的远程铁磁排序,达到高达170K的基里温度.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学是一种材料科学.
- 磁力学 磁力学 是一种
背景情况:
- 原型的基于铁的1111型超导体LaFeAsO作为结构参考.
- LaCuSO是开发新型磁性半导体的原始化合物.
- 引入载体和旋转对于实现磁性排序至关重要.
研究的目的:
- 为了研究基于Cu的磁性半导体 (La,Ba) 的新型散装 (Cu,Mn) SO.SO.中的铁磁性.
- 探索载体度,旋转兴奋剂和磁性排序之间的关系.
- 了解化学压力对铁磁性质的影响.
主要方法:
- 合成具有不同兴奋剂水平的 (La,Ba) ((Cu,Mn) SO化合物.
- 结构特征证实与1111型超导体的同结构关系.
- 测量磁性特性以确定基里温度和排序类型.
主要成果:
- 在 (La,Ba) ((Cu,Mn) SO.SO中成功诱导了铁磁性.
- 观察到远距离的铁磁顺序,由载体介导.
- 在10%的Ba和5%的Mn兴奋剂下,达到170K的最大基里温度.
- 通过对 (La,Sr) ((Cu,Mn) SO) 的Sr兴奋剂诱导的负化学压力被证明可以抑制铁磁性.
结论:
- 这项研究表明,通过载体和旋转兴奋剂,在基于Cu的材料中实现铁磁性的可行途径.
- (La,Ba) ((Cu,Mn) SO代表了一类新的磁性半导体,具有潜在的应用.
- 化学压力在调整这些材料中的磁性秩序方面发挥着重要作用.
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