双极磁切换和巨大的交换偏差在Fe替代的SmCrO3中
Manu Mohan1, Sanjib Nayak1, Arnab Pal1
1Pervoskite Materials Laboratory, Functional Oxides Research Group (FORG), Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India.
概括
铁替代的萨马里正合金 (SmCrO3) 呈现出复杂的磁性排序,包括反铁磁性行为和磁性补偿温度. 这项研究揭示了可调节的磁化切换和显著的交换偏差效应,突出了其潜在的应用.
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
- 磁力学 磁力学 是一种
背景情况:
- 由于磁离子之间相互竞争的相互作用,稀土石表现出复杂的磁顺序.
- 了解这些复杂的磁行为对于探索潜在的技术应用至关重要.
研究的目的:
- 为了合成和研究铁替代的萨马正合金 (SmCr0.8Fe0.2O3) 的磁性特性.
- 根据其磁性特征,探索这种材料的潜在应用.
主要方法:
- 固态合成路径用于样品制备.
- 综合磁性研究,包括温度依赖磁化测量和M-H循环分析.
- 应用理论模型来研究训练效应现象.
主要成果:
- 在 ~ 181 K 的 Nèel 温度 (TN) 观察到的抗铁磁 (AFM) 排序.
- 在~137K和50K确定了磁性补偿温度 (TCOMP),在64K确定了旋转重定向温度 (TSR).
- 在场冷却条件下观察到负磁化,使可控制的磁化切换成为可能.
- 在10K时显示出~1.39T的显著交换偏差 (HEB),归因于共存的铁磁和AFM排序.
- 通过在不同场冷却条件下进行M-H循环分析,排除了小循环效应.
结论:
- 在SmCrO3中替代导致复杂的磁现象,包括可调节的磁化切换和显著的交换偏差效应.
- 观察到的磁性特性表明,在需要受控磁性切换和偏差的领域有潜在的应用.
- 理论验证证实了交换偏差效应,加强了对材料磁相互作用的理解.
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