Direct evidence of correlations between relaxor behavior and polar nano-regions in relaxor ferroelectrics : A case study of lead-free piezoelectrics Na0.5Bi0.5TiO3-x%BaTiO3

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Wenwei Ge
  • Chengtao Luo
  • Christopher P. Devreugd
  • Qinhui Zhang
  • Jiefang Li
  • Haosu Luo
  • D. Viehland

Detail(s)

Original languageEnglish
Article number241914
Journal / PublicationApplied Physics Letters
Volume103
Issue number24
Publication statusPublished - 9 Dec 2013
Externally publishedYes

Abstract

Diffuse scattering and relaxor behavior in Na0.5Bi 0.5TiO3 (NBT) and NBT-5.6 at. %BaTiO3 (NBT-5.6%BT) were investigated. X-ray diffraction revealed two types of diffuse scattering in NBT: (i) broad and (ii) asymmetric L-shaped. After modification with 5.6%BT, the broad diffuse scattering patterns became narrow, and the asymmetric L-shaped ones were replaced by symmetric ones. The symmetric diffuse scattering in NBT-5.6%BT disappeared with increasing dc electric field (E) for E ≥ 9.5 kV/cm where the frequency dispersion in the dielectric constant disappeared. These results demonstrate that the relaxor characteristics are directly correlated with the diffuse scattering and the presence polar nano-regions. © 2013 AIP Publishing LLC.

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Citation Format(s)

Direct evidence of correlations between relaxor behavior and polar nano-regions in relaxor ferroelectrics : A case study of lead-free piezoelectrics Na0.5Bi0.5TiO3-x%BaTiO3. / Ge, Wenwei; Luo, Chengtao; Devreugd, Christopher P.; Zhang, Qinhui; Ren, Yang; Li, Jiefang; Luo, Haosu; Viehland, D.

In: Applied Physics Letters, Vol. 103, No. 24, 241914, 09.12.2013.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review