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Chin. Phys. B, 2020, Vol. 29(8): 083301    DOI: 10.1088/1674-1056/ab8a3d

Photoluminescence in wide band gap corundum Mg4Ta2O9 single crystals

Liang Li(李亮), Yu-Lu Zheng(郑雨露), Yu-Xin Hu(胡雨馨), Fang-Fei Li(李芳菲), Qiang Zhou(周强), Tian Cui(崔田)
State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130000, China

As is well known, the basic intrinsic properties of materials can be significant for their practical applications. In this work, the room-temperature absorption, transmittance, reflectance spectra, and relative photoelectricities parameters of the Mg4Ta2O9 crystals are demonstrated. Meanwhile, the polarized Raman spectra of Mg4Ta2O9 crystals are also described. The room-temperature photoluminescence (PL) and the temperature-dependent PL for Mg4Ta2O9 crystals are obtained. Significantly, we observe a phonon-participated PL process in Mg4Ta2O9.

Keywords:  corundum      band gap energy      polarized Raman      photoelectric      ultraviolet emission  
Received:  14 February 2020      Revised:  09 April 2020      Published:  05 August 2020
PACS:  33.20.Fb (Raman and Rayleigh spectra (including optical scattering) ?)  
  61.05.cp (X-ray diffraction)  
  07.55.Jg (Magnetometers for susceptibility, magnetic moment, and magnetization measurements)  

Project supported by the National Key Research and Development Program, China (Grant No. 2017YFA0403704), the National Natural Science Foundation of China (Grant Nos. 11304113, 11474127, and 11574112), and the Fundamental Research Funds for the Central Universities, China.

Corresponding Authors:  Qiang Zhou     E-mail:

Cite this article: 

Liang Li(李亮), Yu-Lu Zheng(郑雨露), Yu-Xin Hu(胡雨馨), Fang-Fei Li(李芳菲), Qiang Zhou(周强), Tian Cui(崔田) Photoluminescence in wide band gap corundum Mg4Ta2O9 single crystals 2020 Chin. Phys. B 29 083301

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