期刊
THIN SOLID FILMS
卷 745, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2022.139104
关键词
Magnetic thin films; Spintronics; Zero -moment half-metal; Diffusion; Interfaces
类别
资金
- Science Foundation Ireland [12/RC/2278]
- European Commission [DLV-737038]
- Irish Research Council [GOIPG/2016/308]
- Irish Research Council (IRC) [GOIPG/2016/308] Funding Source: Irish Research Council (IRC)
Examined the effects of different spacer layers on the interfaces between ferrimagnetic and ferromagnetic materials. The loss of perpendicular anisotropy in the ferrimagnetic material is related to the relaxation of the crystal structure. The limited solubility of certain elements provides additional valence electrons, stabilizing the perpendicular anisotropy and compensating for changes in strain and defect density. The Mo spacer layer promotes the formation of a phase that retains its perpendicular anisotropy.
Perpendicular heterostructures based on a ferrimagnetic Mn2RuxGa(MRG) layer and a ferromagnetic Co/Pt multilayer were examined to understand the effects of different spacer layers (V, Mo, Hf, HfOx and TiN) on the interfaces with the magnetic electrodes, after annealing at 350?. Loss of perpendicular anisotropy in MRG is strongly correlated with a reduction in the substrate-induced tetragonality due to relaxation of the crystal structure. In the absence of diffusion, strain and chemical ordering within MRG are correlated. The limited solubility of both Hf and Mo in MRG is a source of additional valence electrons, which results in an increase in compensation temperature T-comp. This also stabilises perpendicular anisotropy, compensating for changes in strain and defect density. The reduction in squareness of the MRG hysteresis loop measured by anomalous Hall effect is < 10%, making it useful in active devices. Furthermore, a CoPt3 phase with (220) texture in the perpendicular Co/Pt free layer promoted by a Mo spacer layer is the only one that retains its perpendicular anisotropy on annealing.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据