<i>d</i>-orbital symmetry of BaTiO<sub>3</sub> thin film

POSTER

Abstract

A high-quality BaTiO3 thin film was grown on a DyScO3 single crystal substrate using pulsed laser deposition. Soft X-ray absorption spectroscopy was performed at the Ti L2,3 edges of the film to characterize the d-orbital symmetry. Novel split Ti d-orbital eg and degenerate t2g subbands of the BTO film have been observed. The energy of dx2-y2 orbital is lower than the d3z2-r2 orbital by about 100 meV, the opposite of what would normally be expected for Jahn-Teller octahedral distortion. This is likely a result of the displaced Ti cation. This novel d-orbital symmetry is very likely to be found in other perovskite-based ferroelectric materials.

*National Natural Science Foundation of China (No:11874058)

Presenters

  • Yang Song

    • Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences

Authors

  • Yang Song

    • Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences

  • Ruyi Zhang

    • Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences
    • Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences.

  • Yanwei Cao

    • Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences
    • Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Industrial Technology, Chinese Academy of Sciences.
    • Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences
    • Chinese Academy of Science