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Dependence of Electrical and Thermal Properties on Applied Electric Field in La Doped Barium Titanate Displacive Ferroelectric Perovskites

Received: 6 April 2021     Accepted: 12 May 2021     Published: 31 August 2021
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Abstract

The high dielectric constant and low dielectric loss are the most desirable characteristics of the dielectric materials. Considering the hazardous nature of lead-based ceramics, many research groups have paid great attention to the research on non-lead-based perovskites. The effect of the electric field on the electrical and thermal properties of the Lanthanum doped barium Titanate, one of the main important members of the ferroelectric Perovskites family is studied using the method of double time thermal Green’s function and Kubo formalism. With the help of the Silverman-Joseph Hamiltonian a general expression is derived. The electric field and temperature dependent dielectric constant and specific heat capacity of Ba1-xLaxTiO3 crystal has been investigated. The dielectric constant decreases with increase in temperature and applied electric field component. The variation shows a consequence of the gradual decrease in the Curie temperature of the doped material with the increase in defect concentrations. The results also compared with some previous studies done by the author and other workers on similar other materials.

Published in Composite Materials (Volume 5, Issue 2)
DOI 10.11648/j.cm.20210502.11
Page(s) 30-36
Creative Commons

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), 2021. Published by Science Publishing Group

Keywords

Ferroelectrics, Perovskites, Curie Temperature, Green’s Function, Kubo Formalism

References
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  • APA Style

    Dushyant Pradeep, Jagdev Singh. (2021). Dependence of Electrical and Thermal Properties on Applied Electric Field in La Doped Barium Titanate Displacive Ferroelectric Perovskites. Composite Materials, 5(2), 30-36. https://doi.org/10.11648/j.cm.20210502.11

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    ACS Style

    Dushyant Pradeep; Jagdev Singh. Dependence of Electrical and Thermal Properties on Applied Electric Field in La Doped Barium Titanate Displacive Ferroelectric Perovskites. Compos. Mater. 2021, 5(2), 30-36. doi: 10.11648/j.cm.20210502.11

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    AMA Style

    Dushyant Pradeep, Jagdev Singh. Dependence of Electrical and Thermal Properties on Applied Electric Field in La Doped Barium Titanate Displacive Ferroelectric Perovskites. Compos Mater. 2021;5(2):30-36. doi: 10.11648/j.cm.20210502.11

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  • @article{10.11648/j.cm.20210502.11,
      author = {Dushyant Pradeep and Jagdev Singh},
      title = {Dependence of Electrical and Thermal Properties on Applied Electric Field in La Doped Barium Titanate Displacive Ferroelectric Perovskites},
      journal = {Composite Materials},
      volume = {5},
      number = {2},
      pages = {30-36},
      doi = {10.11648/j.cm.20210502.11},
      url = {https://doi.org/10.11648/j.cm.20210502.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.cm.20210502.11},
      abstract = {The high dielectric constant and low dielectric loss are the most desirable characteristics of the dielectric materials. Considering the hazardous nature of lead-based ceramics, many research groups have paid great attention to the research on non-lead-based perovskites. The effect of the electric field on the electrical and thermal properties of the Lanthanum doped barium Titanate, one of the main important members of the ferroelectric Perovskites family is studied using the method of double time thermal Green’s function and Kubo formalism. With the help of the Silverman-Joseph Hamiltonian a general expression is derived. The electric field and temperature dependent dielectric constant and specific heat capacity of Ba1-xLaxTiO3 crystal has been investigated. The dielectric constant decreases with increase in temperature and applied electric field component. The variation shows a consequence of the gradual decrease in the Curie temperature of the doped material with the increase in defect concentrations. The results also compared with some previous studies done by the author and other workers on similar other materials.},
     year = {2021}
    }
    

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    T1  - Dependence of Electrical and Thermal Properties on Applied Electric Field in La Doped Barium Titanate Displacive Ferroelectric Perovskites
    AU  - Dushyant Pradeep
    AU  - Jagdev Singh
    Y1  - 2021/08/31
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    N1  - https://doi.org/10.11648/j.cm.20210502.11
    DO  - 10.11648/j.cm.20210502.11
    T2  - Composite Materials
    JF  - Composite Materials
    JO  - Composite Materials
    SP  - 30
    EP  - 36
    PB  - Science Publishing Group
    SN  - 2994-7103
    UR  - https://doi.org/10.11648/j.cm.20210502.11
    AB  - The high dielectric constant and low dielectric loss are the most desirable characteristics of the dielectric materials. Considering the hazardous nature of lead-based ceramics, many research groups have paid great attention to the research on non-lead-based perovskites. The effect of the electric field on the electrical and thermal properties of the Lanthanum doped barium Titanate, one of the main important members of the ferroelectric Perovskites family is studied using the method of double time thermal Green’s function and Kubo formalism. With the help of the Silverman-Joseph Hamiltonian a general expression is derived. The electric field and temperature dependent dielectric constant and specific heat capacity of Ba1-xLaxTiO3 crystal has been investigated. The dielectric constant decreases with increase in temperature and applied electric field component. The variation shows a consequence of the gradual decrease in the Curie temperature of the doped material with the increase in defect concentrations. The results also compared with some previous studies done by the author and other workers on similar other materials.
    VL  - 5
    IS  - 2
    ER  - 

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Author Information
  • Department of School Education, Govt. Boys Higher Sec. School Sunderbani, Govt. of Jammu and Kashmir, India

  • Department of Irrigation (Punjab), Department of Physics, Lovely Professional University, Jalandhar, India

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