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在-铁酸盐薄膜中的应变调节磁性异构性

Wakeel Ahmad¹, Digbijaya Palai², Pranjul Garg³

¹Department of Physics, Indian Institute of Technology, Kanpur 208016, India.

Journal of physics. Condensed matter : an Institute of Physics journal

|October 3, 2025

概括

在-铁酸盐薄膜中的应变工程显著改变了磁性异性质. 应用在平面内应变调节的内在磁性异构性 (Ku) 从在平面内到平面外,影响材料特性.

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
磁力学磁力学是一种

背景情况:

脊柱铁矿表现出高基里温度和应变敏感的磁性异构性.
-铁酸盐薄膜对于需要可调节磁性质的应用具有前景.

研究的目的:

为了研究平面内应变对脉冲激光沉积-铁酸盐薄膜磁性异构的作用.
了解应变,晶体结构和磁相演变之间的关系.

主要方法:

尼克-铁酸盐薄膜的脉冲激光沉积.
在平面内应变应变 (压缩和拉伸).
用于网格参数分析的X射线衍射 (XRD).
拉曼光谱用于探测晶体结构.
磁性歇斯底里测量.磁性歇斯底里测量.
微磁模拟. 在微磁模拟.

主要成果:

在平面内应变调整从-0.6% (压缩) 到+0.5% (拉力) 转移了内在磁性异构性 (Ku) 从-14.3 kJ m−3 (在平面内) 到+0.1 kJ m−3 (在平面外).
压力诱导的晶体结构变化与格子参数演变和拉曼模式转移相关.
磁性歇斯底里揭示了硬和软磁相的存在,其演变与应用于应变的应变有关.

结论:

应变工程是一种有效的方法来控制-铁酸盐薄膜中的磁性异构性.
硬磁和软磁相之间的相互作用,由应变驱动,决定了整体的磁性行为.
这些发现为设计具有定制性质的先进磁性材料提供了洞察力.

关键词:

拉曼光谱法拉曼光谱法拉曼光谱法磁弹性异构性是一种磁弹性异构性.薄膜磁性磁性薄膜磁性

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