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Issue 68, 2017
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Antiferroelectric to relaxor ferroelectric phase transition in PbO modified (Pb0.97La0.02)(Zr0.95Ti0.05)O3 ceramics with a large energy-density for dielectric energy storage

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Abstract

(Pb0.97(1+x)La0.02)(Zr0.95Ti0.05)O3 (PLZT2/95/5) ceramics with excess lead content (x = 0, 3%, 5%, 7.5%, 10% and 15%) were successfully prepared via a solid-state reaction route. X-ray diffraction analysis indicated that a pure perovskite structure was obtained for all compositions. The effects of excess lead content on the microstructure, dielectric properties, and energy-storage performance of PLZT2/95/5 ceramics were systematically investigated. The ceramics exhibited tetragonal phase structures and showed two dielectric peaks at 120 and 240 °C, corresponding to antiferroelectric–ferroelectric and ferroelectric–paraelectric phase transitions. The recoverable energy-storage density calculated from hysteresis loops reached about 2.12 J cm−3 with an efficiency of 92.98%, which was due to the phase transition from the antiferroelectric state to the relaxor ferroelectric state. Based on these results, typical PLZT2/95/5 ceramics with different lead excess content have been studied, which could be potential candidates for applications in high energy storage-density electrical capacitors.

Graphical abstract: Antiferroelectric to relaxor ferroelectric phase transition in PbO modified (Pb0.97La0.02)(Zr0.95Ti0.05)O3 ceramics with a large energy-density for dielectric energy storage

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Publication details

The article was received on 04 Aug 2017, accepted on 23 Aug 2017 and first published on 07 Sep 2017


Article type: Paper
DOI: 10.1039/C7RA08621K
Citation: RSC Adv., 2017,7, 43327-43333
  • Open access: Creative Commons BY license
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    Antiferroelectric to relaxor ferroelectric phase transition in PbO modified (Pb0.97La0.02)(Zr0.95Ti0.05)O3 ceramics with a large energy-density for dielectric energy storage

    B. Li, Q. Liu, X. Tang, T. Zhang, Y. Jiang, W. Li and J. Luo, RSC Adv., 2017, 7, 43327
    DOI: 10.1039/C7RA08621K

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