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arXiv 2104.14792cond-mat.mtrl-sciphysics.app-ph
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系统无序$\mathrm{Fe}_{60}\mathrm{Al}_{40}$薄膜的自旋极化和磁输运性质

Spin polarization and magnetotransport properties of systematically disordered $\mathrm{Fe}_{60}\mathrm{Al}_{40}$ thin films

Kiril Borisov, Jonathan Ehrler, Ciaran Fowley, Benedikt Eggert, Heiko Wende, Steffen Cornelius, Kay Potzger, Juergen Lindner, Juergen Fassbender, Rantej Bali, Plamen Stamenov

摘要:

研究了Ne $^{+}$离子辐照下,不同反位无序度下$B2$有序Fe、$_{60}$、Al、$_{40}$薄膜的自旋极化、自发霍尔角、饱和磁化强度和居里温度的变化.自旋极化随离子注量单调增加。用2 $\cdot$ 10 $^{16}$ ions/cm $^2$在30 keV下辐照40 nm厚的薄膜,获得了46%的相对高的极化率和3.1%的SHA。一个有趣的分歧的磁化强度和SHA的趋势观察低无序浓度。离子辐照Fe $_{60}$ Al $_{40}$的高自旋极化率和宽的可调谐范围使其在自旋电子器件中具有很好的应用前景。

英文摘要:

We investigate the evolution of spin polarization, spontaneous Hall angle (SHA), saturation magnetization and Curie temperature of $B2$-ordered Fe$_{60}$Al$_{40}$ thin films under varying antisite disorder, induced by Ne$^{+}$-ion irradiation. The spin polarization increases monotonically as a function of ion fluence. A relatively high polarization of 46 % and the SHA of 3.1 % are achieved on 40 nm thick films irradiated with 2 $\cdot$ 10$^{16}$ ions/cm$^2$ at 30 keV. An interesting divergence in the trends of the magnetization and SHA is observed for low disorder concentrations. The high spin polarization and its broad tunability range make ion-irradiated Fe$_{60}$Al$_{40}$ a promising material for application in spin electronic devices.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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