由GdFeO3中的交换收紧和补偿之间的动态交织引起的短暂的磁电合3
Zhuo Zeng1, Huakun Zuo1, Zhengcai Xia1
1Wuhan National High Magnetic Field Center & School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China.
The journal of physical chemistry letters
|August 16, 2023
概括
我们观察到GdFeO3在其补偿温度附近的动态磁电合. 脉冲磁场诱导了Fe3+矩逆转,导致极化跳跃,暗示了敏感的多铁器件的潜力.
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:
- 磁电 (ME) 合是磁场影响电极化的现象,反之亦然.
- GdFeO3是一种具有复杂磁性排序的多铁基材料.
- 了解动态ME合对于开发新型电子设备至关重要.
研究的目的:
- 为了研究GdFeO3在脉冲磁场下的动态磁电合行为.
- 探索温度的影响,特别是在补偿温度附近,对ME合.
- 阐明驱动观察到的ME效应的潜在机制.
主要方法:
- 在GdFeO3.3的c轴上应用脉冲磁场.
- 测量磁化 (M) 和电极化 (P) 动态.
- 在补偿温度附近进行实验 (Tcomp = 3.5 K).
主要成果:
- 一个微妙的磁性过渡涉及Fe3+时刻逆转被观察到在Tcomp.com附近的0.8 T左右.
- 这种过渡在动态条件下诱导了电极化 (P) 在静态测量中缺席的明显跃升.
- 反铁磁 (AFM) 合和Zeeman能量之间的相互作用被确定为驱动力.
结论:
- 在GdFeO3中的动态ME合受到AFM合和在补偿温度附近的Zeeman能量之间的竞争的强烈影响.
- 在Tcomp附近的Fe3+时刻的反转会引发电极化突然变化.
- Ferrimagnetic多铁体orthoferrites显示出高度对磁场敏感的ME合在它们的补偿温度附近的潜力,基于交换严格机制.
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