Dielectric, piezoelectric, and ferroelectric properties of lanthanum-modified PZTFN ceramics

Arvind Kumar, S. K. Mishra

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    Arvind Kumar, and S. K. Mishra, Dielectric, piezoelectric, and ferroelectric properties of lanthanum-modified PZTFN ceramics, Int. J. Miner. Metall. Mater., 21(2014), No. 10, pp.1019-1027. https://dx.doi.org/10.1007/s12613-014-1003-9
    Arvind Kumar, and S. K. Mishra, Dielectric, piezoelectric, and ferroelectric properties of lanthanum-modified PZTFN ceramics, Int. J. Miner. Metall. Mater., 21(2014), No. 10, pp.1019-1027. https://dx.doi.org/10.1007/s12613-014-1003-9
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    Dielectric, piezoelectric, and ferroelectric properties of lanthanum-modified PZTFN ceramics

    • Research and Technology Development Centre, Sharda University, Greater, Noida, 201306, India

    • Dr. Harisingh Gour University, Sagar, Sagar (M.P.), 470003, India

    基金项目: 

    This work was financially supported by the Defence Research and Development Organisation (DRDO), the Government of India (No. ERIP/ER/0903830/M/01/1235).

      通信作者:

      S. K. Mishra E-mail: dr.sunilkmishra@gmail.com

    中文摘要

    Specimens of Pb1−1.5xLax(Zr0.53Ti0.47)1−y−zFeyNbzO3(x = 0, 0.004, 0.008, 0.012, and 0.016, y = z = 0.01) (PZTFN) ceramics were synthesized by a semi-wet route. In the present study, the effect of La doping was investigated on the structural, microstructural, dielectric, piezoelectric, and ferroelectric properties of the ceramics. The results show that, the tetragonal (space group P4mm) and rhombohedral (space group R3c) phases are observed to coexist in the sample at x = 0.012. Microstructural investigations of all the samples reveal that La doping inhibits grain growth. Doping of La into PZTFN improves the dielectric, ferroelectric, and piezoelectric properties of the ceramics. The hysteresis loops of all specimens exhibit nonlinear behavior. The dielectric, piezoelectric and ferroelectric properties show a maximum response at x ≥ 0.012, which corresponds to the morphotropic phase boundary (MPB).

     

    Dielectric, piezoelectric, and ferroelectric properties of lanthanum-modified PZTFN ceramics

    Author Affilications

      • Research and Technology Development Centre, Sharda University, Greater, Noida, 201306, India

      • Dr. Harisingh Gour University, Sagar, Sagar (M.P.), 470003, India

    • Funds: 

      This work was financially supported by the Defence Research and Development Organisation (DRDO), the Government of India (No. ERIP/ER/0903830/M/01/1235).

    • Received: 02 February 2014; Revised: 15 April 2014; Accepted: 23 April 2014;
    Specimens of Pb1−1.5xLax(Zr0.53Ti0.47)1−y−zFeyNbzO3(x = 0, 0.004, 0.008, 0.012, and 0.016, y = z = 0.01) (PZTFN) ceramics were synthesized by a semi-wet route. In the present study, the effect of La doping was investigated on the structural, microstructural, dielectric, piezoelectric, and ferroelectric properties of the ceramics. The results show that, the tetragonal (space group P4mm) and rhombohedral (space group R3c) phases are observed to coexist in the sample at x = 0.012. Microstructural investigations of all the samples reveal that La doping inhibits grain growth. Doping of La into PZTFN improves the dielectric, ferroelectric, and piezoelectric properties of the ceramics. The hysteresis loops of all specimens exhibit nonlinear behavior. The dielectric, piezoelectric and ferroelectric properties show a maximum response at x ≥ 0.012, which corresponds to the morphotropic phase boundary (MPB).

     

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