Journal of Materials Science

, Volume 53, Issue 12, pp 8844–8854 | Cite as

Dual relaxation behaviors and large electrostrictive properties of Bi0.5Na0.5TiO3–Sr0.85Bi0.1TiO3 ceramics

  • Jun Wang
  • Changrong Zhou
  • Qingning Li
  • Weidong Zeng
  • Jiwen Xu
  • Guohua Chen
  • Changlai Yuan
  • Guanghui Rao


Lead-free ceramics (1 − x)Bi0.5Na0.5TiO3xSr0.85Bi0.1TiO3 (BNT–xSBT, x = 0.4, 0.5, 0.6 and 0.7) were prepared by a solid-state reaction process. Coexistence of ferroelectric relaxation at low temperature and Maxwell–Wagner dielectric relaxation at high temperature was revealed for the first time in this system. Meanwhile, hysteresis-free PE loops combined with a very high piezoelectric strain coefficient (d33) of 1658 pC/N concurrently with large electrostrictive coefficient Q = 0.287 m4C−2 were achieved. The ferroelectric relaxor behavior and large electrostrictive strain might be linked to easy reorientation and reversal of ergodic PNRs and the combined effect of Bi off-center position and lone pair electrons.



This work was supported by the National Nature Science Foundation of China (61561015, 11564007 and 11664006) and the Natural Science Foundation of Guangxi (2017GXNSFDA198024 and 2016GXNSFAA 380069).


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Jun Wang
    • 1
    • 2
  • Changrong Zhou
    • 1
    • 2
  • Qingning Li
    • 1
  • Weidong Zeng
    • 1
  • Jiwen Xu
    • 1
    • 2
  • Guohua Chen
    • 1
    • 2
  • Changlai Yuan
    • 1
    • 2
  • Guanghui Rao
    • 1
    • 2
  1. 1.Guangxi Key Laboratory of Information MaterialsGuilin University of Electronic TechnologyGuilinPeople’s Republic of China
  2. 2.School of Material Science and EngineeringGuilin University of Electronic TechnologyGuilinPeople’s Republic of China

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