International Journal of Materials Science and Applications

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Dielectric and Ferroelectric Properties of Ho2O3 Doped Barium Strontium Titanate Ceramicsq

Received: 16 July 2018    Accepted: 02 August 2018    Published: 26 June 2019
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Abstract

The crystalline structure, surface morphology, dielectric and ferroelectric properties of 0~10wt% Ho2O3 doped (Ba0.75Sr0.25) TiO3 ceramics prepared by conventional solid state method were studied using X-ray diffractometer, scanning electron microscopy, LCR measuring system and ferroelectric property test systems aiming for ceramic capacitor applications. It is found that proper amount of Ho2O3 can refine grains of the system. With the increase of Ho2O3 doping content, the average grain size of (Ba0.75Sr0.25) TiO3 ceramics decreases. When Ho2O3>8 wt%, (Ba0.75Sr0.25) TiO3 based ceramic samples are multi-phase compounds with typical perovskite structure accompanied by the appearance of cylindrical grains. The Ho3+ ions substitute the host A sites and B sites of (Ba0.75Sr0.25) TiO3 perovskite lattice, resulting in the lattice distortion of the system and the change of the relative dielectric constant and dielectric loss at room temperature. With the increase of Ho2O2 doping content, the relative dielectric constant at room temperature of the system increases first and then decreases. The maximum of relative dielectric constant at room temperature can be found in the 1 wt% Ho2O3 doped (Ba0.75Sr0.25) TiO3 ceramics. When Ho2O3>1 wt%, the maximum of relative dielectric constant εrmax decreases and the temperature corresponding to the maximum of relative dielectric constant Tm shifts toward lower temperature with the increase of Ho2O3 doping content. The (Ba0.75Sr0.25) TiO3 ceramics with high Ho2O3 content show relaxor-like behavior which is characterized by the typical diffuse phase transition and frequency dispersion of dielectric constant. However, the (Ba0.75Sr0.25) TiO3 ceramics with low Ho2O3 content do not exhibit permittivity frequency dispersion. According to the P-E hysteresis loops of Ho2O3 doped (Ba0.75Sr0.25) TiO3 ceramics, the ferroelectricity was increased and then decreased with the increase of Ho2O3 doping content. With the increase of Ho2O3 doping content, the P-E relationships turn out to be straight lines, implying the paraelectric phase for (Ba0.75Sr0.25) TiO3 ceramics with high Ho2O3 content.

DOI 10.11648/j.ijmsa.20190801.12
Published in International Journal of Materials Science and Applications (Volume 8, Issue 1, January 2019)
Page(s) 12-20
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Barium Strontium Titanate, Perovskite, Relaxor Characteristic, Ferroelectric Properties

References
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Author Information
  • Department of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, China

  • Department of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, China

  • Department of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, China

  • Department of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, China

  • Department of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, China

  • Department of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, China

  • Department of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, China

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    Mengyuan Zhang, Congyu Li, Fangxu Chen, Long Chen, Jianhua Liu, et al. (2019). Dielectric and Ferroelectric Properties of Ho2O3 Doped Barium Strontium Titanate Ceramicsq. International Journal of Materials Science and Applications, 8(1), 12-20. https://doi.org/10.11648/j.ijmsa.20190801.12

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    Mengyuan Zhang; Congyu Li; Fangxu Chen; Long Chen; Jianhua Liu, et al. Dielectric and Ferroelectric Properties of Ho2O3 Doped Barium Strontium Titanate Ceramicsq. Int. J. Mater. Sci. Appl. 2019, 8(1), 12-20. doi: 10.11648/j.ijmsa.20190801.12

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    AMA Style

    Mengyuan Zhang, Congyu Li, Fangxu Chen, Long Chen, Jianhua Liu, et al. Dielectric and Ferroelectric Properties of Ho2O3 Doped Barium Strontium Titanate Ceramicsq. Int J Mater Sci Appl. 2019;8(1):12-20. doi: 10.11648/j.ijmsa.20190801.12

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  • @article{10.11648/j.ijmsa.20190801.12,
      author = {Mengyuan Zhang and Congyu Li and Fangxu Chen and Long Chen and Jianhua Liu and Tianyu Chen and Chen Zhang},
      title = {Dielectric and Ferroelectric Properties of Ho2O3 Doped Barium Strontium Titanate Ceramicsq},
      journal = {International Journal of Materials Science and Applications},
      volume = {8},
      number = {1},
      pages = {12-20},
      doi = {10.11648/j.ijmsa.20190801.12},
      url = {https://doi.org/10.11648/j.ijmsa.20190801.12},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.ijmsa.20190801.12},
      abstract = {The crystalline structure, surface morphology, dielectric and ferroelectric properties of 0~10wt% Ho2O3 doped (Ba0.75Sr0.25) TiO3 ceramics prepared by conventional solid state method were studied using X-ray diffractometer, scanning electron microscopy, LCR measuring system and ferroelectric property test systems aiming for ceramic capacitor applications. It is found that proper amount of Ho2O3 can refine grains of the system. With the increase of Ho2O3 doping content, the average grain size of (Ba0.75Sr0.25) TiO3 ceramics decreases. When Ho2O3>8 wt%, (Ba0.75Sr0.25) TiO3 based ceramic samples are multi-phase compounds with typical perovskite structure accompanied by the appearance of cylindrical grains. The Ho3+ ions substitute the host A sites and B sites of (Ba0.75Sr0.25) TiO3 perovskite lattice, resulting in the lattice distortion of the system and the change of the relative dielectric constant and dielectric loss at room temperature. With the increase of Ho2O2 doping content, the relative dielectric constant at room temperature of the system increases first and then decreases. The maximum of relative dielectric constant at room temperature can be found in the 1 wt% Ho2O3 doped (Ba0.75Sr0.25) TiO3 ceramics. When Ho2O3>1 wt%, the maximum of relative dielectric constant εrmax decreases and the temperature corresponding to the maximum of relative dielectric constant Tm shifts toward lower temperature with the increase of Ho2O3 doping content. The (Ba0.75Sr0.25) TiO3 ceramics with high Ho2O3 content show relaxor-like behavior which is characterized by the typical diffuse phase transition and frequency dispersion of dielectric constant. However, the (Ba0.75Sr0.25) TiO3 ceramics with low Ho2O3 content do not exhibit permittivity frequency dispersion. According to the P-E hysteresis loops of Ho2O3 doped (Ba0.75Sr0.25) TiO3 ceramics, the ferroelectricity was increased and then decreased with the increase of Ho2O3 doping content. With the increase of Ho2O3 doping content, the P-E relationships turn out to be straight lines, implying the paraelectric phase for (Ba0.75Sr0.25) TiO3 ceramics with high Ho2O3 content.},
     year = {2019}
    }
    

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  • TY  - JOUR
    T1  - Dielectric and Ferroelectric Properties of Ho2O3 Doped Barium Strontium Titanate Ceramicsq
    AU  - Mengyuan Zhang
    AU  - Congyu Li
    AU  - Fangxu Chen
    AU  - Long Chen
    AU  - Jianhua Liu
    AU  - Tianyu Chen
    AU  - Chen Zhang
    Y1  - 2019/06/26
    PY  - 2019
    N1  - https://doi.org/10.11648/j.ijmsa.20190801.12
    DO  - 10.11648/j.ijmsa.20190801.12
    T2  - International Journal of Materials Science and Applications
    JF  - International Journal of Materials Science and Applications
    JO  - International Journal of Materials Science and Applications
    SP  - 12
    EP  - 20
    PB  - Science Publishing Group
    SN  - 2327-2643
    UR  - https://doi.org/10.11648/j.ijmsa.20190801.12
    AB  - The crystalline structure, surface morphology, dielectric and ferroelectric properties of 0~10wt% Ho2O3 doped (Ba0.75Sr0.25) TiO3 ceramics prepared by conventional solid state method were studied using X-ray diffractometer, scanning electron microscopy, LCR measuring system and ferroelectric property test systems aiming for ceramic capacitor applications. It is found that proper amount of Ho2O3 can refine grains of the system. With the increase of Ho2O3 doping content, the average grain size of (Ba0.75Sr0.25) TiO3 ceramics decreases. When Ho2O3>8 wt%, (Ba0.75Sr0.25) TiO3 based ceramic samples are multi-phase compounds with typical perovskite structure accompanied by the appearance of cylindrical grains. The Ho3+ ions substitute the host A sites and B sites of (Ba0.75Sr0.25) TiO3 perovskite lattice, resulting in the lattice distortion of the system and the change of the relative dielectric constant and dielectric loss at room temperature. With the increase of Ho2O2 doping content, the relative dielectric constant at room temperature of the system increases first and then decreases. The maximum of relative dielectric constant at room temperature can be found in the 1 wt% Ho2O3 doped (Ba0.75Sr0.25) TiO3 ceramics. When Ho2O3>1 wt%, the maximum of relative dielectric constant εrmax decreases and the temperature corresponding to the maximum of relative dielectric constant Tm shifts toward lower temperature with the increase of Ho2O3 doping content. The (Ba0.75Sr0.25) TiO3 ceramics with high Ho2O3 content show relaxor-like behavior which is characterized by the typical diffuse phase transition and frequency dispersion of dielectric constant. However, the (Ba0.75Sr0.25) TiO3 ceramics with low Ho2O3 content do not exhibit permittivity frequency dispersion. According to the P-E hysteresis loops of Ho2O3 doped (Ba0.75Sr0.25) TiO3 ceramics, the ferroelectricity was increased and then decreased with the increase of Ho2O3 doping content. With the increase of Ho2O3 doping content, the P-E relationships turn out to be straight lines, implying the paraelectric phase for (Ba0.75Sr0.25) TiO3 ceramics with high Ho2O3 content.
    VL  - 8
    IS  - 1
    ER  - 

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