在范德瓦尔斯磁铁中通过离子间隙形成的螺旋玻璃状态
Safe Khan1, Eva S Y Aw2, Liam A V Nagle-Cocco3
1London Centre for Nanotechnology, University College London, London, WC1H 0AH, UK.
Advanced materials (Deerfield Beach, Fla.)
|July 22, 2024
概括
将插入,,和 telluride 晶体中会产生磁性挫折,导致新的旋转玻璃状态. 这种方法独特地调整了磁性特性,并提高了范德瓦尔斯材料中的基里温度.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 磁力学 磁力学 是一种
背景情况:
- 分层范德瓦尔斯 (vdW) 材料通过异构结构和外部刺激提供可调节的磁性.
- 电子兴奋剂,通过网关或间隔,有效地修改磁交换和旋转轨道相互作用,影响基里温度 (TC) 和异构性.
- 之前的研究集中在异构结构和门;间隔在磁丧中的作用仍然未被探索.
研究的目的:
- 为了调查间隙在产生磁丧的未知作用在VDW材料内.
- 探索 (Na) 原子间隙对Cr2 (CGT) 的磁性特性的影响.
- 了解新型磁态的出现及其特征.
主要方法:
- (Na) 原子被插入原始Cr2 (CGT) 的vdW间隙中.
- 动态磁感应度测量和分析以探测磁动力学.
- 磁束的特征和放松时间分布.
主要成果:
- 间隙诱导了CGT中的磁性挫折,导致与铁磁共存的新兴自旋玻璃状态.
- 动态磁性易感性证实了呈现缓慢动态的磁性集群的形成.
- 克里温度 (TC) 从66 K升至240 K的显著提升.
- 在间隔后检测到磁性轻硬轴方向的切换.
结论:
- 间隔被确定为一种独特而有效的方法,用于在简单的vdW晶体中诱导磁丧.
- 这种方法为产生复杂的磁态提供了一条新的途径,例如旋玻璃相.
- 这项研究表明,互的潜力可以显著调整VDW材料的磁性行为.
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