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Fabrication, microstructures, luminescent and magnetic properties of LiFe(WO4)2 microcrystals

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Abstract

Monoclinic LiFe(WO4)2 microcrystals have been fabricated by solid-state ceramic method. Microstructures, luminescent and magnetic properties of the as- fabricated microcrystals were characterized by X-ray diffraction, scanning electron microscopy, photoluminescence spectroscopy and Vibrating Sample Magnetometer. Influence of sintering temperature and sintering time on the microstructures, luminescent and magnetic properties of LiFe(WO4)2 microcrystals were studied. Below the sintering temperature 800 °C, the prepared samples exhibited spherical-like morphology. The crystallinity and purity of the microcrystals increased with increasing the sintering temperature. At higher 800 °C, the observed morphology of the obtained microcrystalline turned to be rods-like. All the LiFe(WO4)2 microcrystals exhibit the alike broad emission peak centered at 390 nm under excitation of 242 nm ultraviolet light except for difference in emission intensity. Due to the good crystallinity and microstructures, LiFe(WO4)2 microcrystals fabricated at 800 °C possess the maximum emission intensity. On the premise of the optimal sintering temperature (800 °C) and the predetermined range of sintering time (1–9 h), the sintering time has little influence on the microstructures and luminescent properties of the LiFe(WO4)2 microcrystals. In addition, all the well crystallized LiFe(WO4)2 microcrystals exhibit paramagnetism at room temperature.

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Acknowledgements

This work was supported by the National Science Foundation of China (NSFC, No. 51551202), the Scientific Research Fund of Sichuan Provincial Education Department of Sichuan Province (No. 15ZA0363, 12ZA142) and the Applied Basic Research Fund of Science and Technology Department of Sichuan Province (No. 2015JY0274).

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Authors and Affiliations

  1. College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, China

    Xiaojiao Jiang, Yanmei Li, Tao Li, Zhanglei Ning, Yan Zhao, Mengjiao Liu, Xin Lai, Jian Bi & Daojiang Gao

  2. Clean Energy Materials and Engineering Center, School of Microelectronics and Solid-state Electronics, University of Electric Science and Technology of China, Chengdu, 611731, China

    Chao Wang

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  1. Xiaojiao Jiang
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Correspondence to Zhanglei Ning, Chao Wang or Daojiang Gao.

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Jiang, X., Li, Y., Li, T. et al. Fabrication, microstructures, luminescent and magnetic properties of LiFe(WO4)2 microcrystals. J Mater Sci: Mater Electron 28, 5584–5591 (2017). https://doi.org/10.1007/s10854-016-6225-3

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