多铁性
自旋电子学
铁弹性
铁磁性
单层
材料科学
各向异性
凝聚态物理
磁各向异性
应变工程
相变
磁化
物理
纳米技术
磁场
光学
光电子学
铁电性
量子力学
电介质
作者
Bo Xu,Shenchang Li,Kun Jiang,Jiang Yin,Zhiguo Liu,Yingchun Cheng,Wenying Zhong
摘要
Two-dimensional (2D) ferromagnets with tunable magnetic anisotropies have great potential in developing spintronic devices. However, until now, there are a few feasible means to control the magnetic anisotropies in 2D ferromagnets. Here, we propose that magnetic easy axes can be switched by ferroelastic strain in 2D ferromagnets: CrSX (X = Cl, Br, I) monolayers. Our ab initio studies reveal that CrSX (X = Cl, Br, I) monolayers are 2D multiferroic materials, which exhibit both ferromagnetism and ferroelasticity. CrSX monolayers also show strongly in-plane magnetic anisotropic character due to their anisotropic structures. By such coexistence, we demonstrate that the in-plane magnetic anisotropy in CrSX monolayers can be manipulated by the reversible ferroelastic strain. Our findings provide a promising platform to control the spintronic properties by incorporating ferroelastic phase transition.
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