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Effect of Co doping on microstructure, dielectric, and energy storage properties of BCZT ceramics

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Abstract

Ba0.85Ca0.15Zr0.1(Ti1−xCox)0.9O3 (BCZT–xCo) (x = 0, 0.02, 0.04, 0.08) were prepared by sol–gel method, and the effects of Co doping on the microstructure, dielectric, and energy storage properties of ceramics were studied. The results show that Co is doped into the B site and does not cause an obvious change in ceramic phase structure. After doping cobalt, the grain size decreases obviously, and the sample becomes more uniform. At room temperature, the resistance value of BCZT–0.04Co is higher than that of other doped samples. The samples doped with Co transform into relaxor ferroelectrics, and the more obvious dispersion phase transition is observed. At the same time, the slim hysteresis loop is observed, and the energy storage loss is obviously reduced, lending to the improved energy storage efficiency. BCZT–0.04Co shows the highest dielectric constant at room temperature. Under the applied electric field of 84 kV/cm, the \({\mathrm{W}}_{\mathrm{rec}}\) of BCZT–0.04Co ceramics is 0.42 J/cm3, the \({W}_{\mathrm{loss}}\) is reduced to 0.17 J/cm3, and the \(\eta\) is 71.2%.

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Funding

This work has been financially supported by the National Natural Science Foundation of China (Nos. 51402091, 61901161), the Scientific Research Project in Henan Normal University (No. 20210376), the Scientific Research Fund of Zhejiang Provincial Education Department (No. 2021R401195), the National University Student Innovation Program (No. 202010476023), and the University Student Innovation Program in Henan Normal University (Nos. 20200208, 20200209, 20200212).

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  1. X. N. Shi, R. Y. Zhang, Y. C. Shi, Y. F. Liang have contributed equally to this work.

Authors and Affiliations

  1. National Demonstration Center for Experimental Physics Education, School of Physics, Henan Normal University, and Henan Key Laboratory of Photovoltaic Materials, Xinxiang, 453007, People’s Republic of China

    X. W. Wang, X. N. Shi, R. Y. Zhang, Y. C. Shi, Y. F. Liang, B. H. Zhang, H. N. Li, S. Y. Hu, K. X. Yu, Y. C. Hu, J. Shang & S. Q. Yin

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Contributions

All authors contributed to the study conception and design. Resources, funding acquisition and project administration are provided by XW, YH, JS and SY. Material preparation was performed by YS and RZ. Data collection and analysis were completed by XS, YS, YL and HL. The first draft of the manuscript was written by XS and YL. Data curation were performed by RZ, SH and KY. Writing—Review and Editing was completed by XW and BZ. All authors commented on previous versions of the manuscript and read and approved the final manuscript.

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Correspondence to X. W. Wang.

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Wang, X.W., Shi, X.N., Zhang, R.Y. et al. Effect of Co doping on microstructure, dielectric, and energy storage properties of BCZT ceramics. J Mater Sci: Mater Electron 33, 20399–20412 (2022). https://doi.org/10.1007/s10854-022-08856-9

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