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应变驱动的双向旋转定向控制在长轴高的氧化物膜中

Zhibo Zhao^1,2, Arun Kumar Jaiswal³, Di Wang^1,4

¹Institute of Nanotechnology, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, 76344, Karlsruhe, Germany.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|July 28, 2023

概括

高氧化物 (HEO) 通过表轴应变表现出可调节的磁性. 应变工程控制了这些复杂材料中的磁性异构和域结构.

科学领域:

材料科学材料科学材料科学
固态物理固态物理
磁力学磁力学是一种

背景情况:

高氧化物 (HEO) 由于多个主要离子,提供了新的组成和特性.
外部刺激可以影响复杂的氧化物材料的磁电子状态.
通过应变工程控制材料特性对于先进的应用至关重要.

研究的目的:

为了研究表轴应变对特定HEO的结构和磁性特性的影响.
为了证明在HEO中磁电子状态的选择性稳定.
探索将HEO设计与应变工程相结合的潜力,用于物业调整.

主要方法:

在拉力,压力和放松应变状态下, (Co_0.2 Cr_0.2 Fe_0.2 Mn_0.2 Ni_0.2 ) ₃ O₄ -HEO薄膜的表层生长.
传输电子显微镜 (TEM) 用于结构特征,包括相位识别和连贯性.
测量磁性特性以分析异构性,磁化行为和域结构.

主要成果:

在表层膜中观察到岩盐和螺旋-HEO阶段的普遍共存,在没有化学分离的情况下是连贯的.
压力诱导的磁性特性双向控制是显而易见的,在放松的膜中具有同otropic 行为.
拉力应变增加了外平面 (OOP) 轴的硬度,而压力应变则诱导了易于OOP磁化和垂直磁性异构.

结论:

长轴应变是一种有效的外部刺激,用于控制复杂的HEO中的磁电子状态.
在 (Co_0.2 Cr_0.2 Fe_0.2 Mn_0.2 Ni_0.2 ) ₃ O₄ 副轴膜中的双相共存是一种普遍现象.
将高设计与连贯的应变工程相结合,为微调氧化物特性提供了一种多功能策略.

关键词:

两个阶段的共存.高氧化物高氧化物接口分离的界面分离.垂直的磁性异构性是垂直的应变工程是一种应变工程.

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