溶液旋涂法制备 BixY3–xFe5O12 薄膜的自旋输运特性

Ying Yi Tian, Shuan Hu Wang, Dian Bing Luo, Xiang Yang Wei, Ke Xin Jin

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

Yttrium iron garnet (YIG), as a room temperature ferrimagnetic insulator with low damping and narrow ferromagnetic resonance linewidth, has been the research hotspot in spintronics because of its spin transport properties. Bi is one of the most common doping elements used in YIG, and some researches have proved that it can tune the magnetic properties of YIG. Previous studies of BixY3–xFe5O12 thin films focused on the evolutions of their structures, morphologies, and magnetic characteristics. Yet, the effects of Bi3+ substitution of Y3+ on spin transport in YIG thin films have not been systematically studied. The regulation of YIG spin transport by doping is expected to provide a new idea for the spintronics exploration of Pt/YIG system. In this work, we prepare a series of BixY3 – xFe5O12 films with different doping ratios by spin coating. And we investigate the effects of Bi3+ on morphology, structure and spin transport properties of YIG films. The results show that Bi doping does not change the crystal structure of YIG. The absorption of the film increases and the bandgap decreases with the increase of doping ratio. The X-ray photoelectron spectroscopy (XPS) indicates the coexistence of Bi3+ and Bi2+. The regulation of Bi doping on spin transport is reflected in the fact that the magnon diffusion length of BixY3–xFe5O12 films is significantly smaller than that of pure YIG films. Meanwhile, we find that the obvious spin Hall magnetoresistance can still be detected in the Pt/BixY3 – xFe5O12 hetero-structure, and the amplitude is the largest when x = 0.3.

投稿的翻译标题Spin transport properties of BixY3–xFe5O12 thin films prepared by spin coating
源语言繁体中文
文章编号017201
期刊Wuli Xuebao/Acta Physica Sinica
72
1
DOI
出版状态已出版 - 5 1月 2023

关键词

  • Bi doping
  • Yttrium iron garnet
  • spin coating
  • spin transport

指纹

探究 '溶液旋涂法制备 BixY3–xFe5O12 薄膜的自旋输运特性' 的科研主题。它们共同构成独一无二的指纹。

引用此