Effects of Jahn-Teller distortion on the skyrmion stability of (Cu1-xNix)2OSeO3

K. Devi Chandrasekhar, H. C. Wu, C. L. Huang, H. D. Yang

研究成果: Article同行評審

10 引文 斯高帕斯(Scopus)

摘要

We explore the Jahn-Teller distortion of Ni2+ ions on the skyrmion phase of Cu2OSeO3. Polycrystalline (Cu1-xNix)2OSeO3 (0 ≤ x ≤ 0.06) samples were synthesized by solid-state reaction. X-ray diffraction, X-ray absorption near-edge spectroscopy, extended X-ray absorption fine structure spectroscopy, magnetic and magnetodielectric measurements were performed and comprehensively analyzed. These revealed that the Ni2+ ion occupies both the Cu sites almost equally, and the Jahn-Teller distortion of the Ni2+ ion invokes a change in the local trigonal bipyramidal structure, which has a significant influence on the H-T magnetic phase diagram and electrical polarization of (Cu1-xNix)2OSeO3. A large enhancement of the skyrmion area upon Ni-doping can be ascribed to the magnetic anisotropy of the Jahn-Teller active Ni2+ ion in the Cu(i) site. The observed results indicate that chemical doping is a unique way to control and manipulate skyrmion boundaries in Cu2OSeO3.

原文English
頁(從 - 到)5270-5274
頁數5
期刊Journal of Materials Chemistry C
4
發行號23
DOIs
出版狀態Published - 2016

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 材料化學

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