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Electric-field-induced AFE-FE transitions and associated strain/preferred orientation in antiferroelectric PLZST.
Lu, Teng; Studer, Andrew J; Noren, Lasse; Hu, Wanbiao; Yu, Dehong; McBride, Bethany; Feng, Yujun; Withers, Ray L; Chen, Hua; Xu, Zhuo; Liu, Yun.
Afiliação
  • Lu T; Research School of Chemistry, The Australian National University, ACT 2601, Australia.
  • Studer AJ; Bragg Institute, The Australia Neutron Science and Technology Organisation, Lucas Height, Australia.
  • Noren L; Research School of Chemistry, The Australian National University, ACT 2601, Australia.
  • Hu W; Research School of Chemistry, The Australian National University, ACT 2601, Australia.
  • Yu D; Bragg Institute, The Australia Neutron Science and Technology Organisation, Lucas Height, Australia.
  • McBride B; Research School of Chemistry, The Australian National University, ACT 2601, Australia.
  • Feng Y; Electronic Materials Research Laboratory, Xian Jiaotong University, Xian 710049, Shaanxi, China.
  • Withers RL; Research School of Chemistry, The Australian National University, ACT 2601, Australia.
  • Chen H; Centre for Advanced Microscopy, The Australian National University, ACT 2601, Australia.
  • Xu Z; Electronic Materials Research Laboratory, Xian Jiaotong University, Xian 710049, Shaanxi, China.
  • Liu Y; Research School of Chemistry, The Australian National University, ACT 2601, Australia.
Sci Rep ; 6: 23659, 2016 Mar 30.
Article em En | MEDLINE | ID: mdl-27025685
Electric-field-induced, antiferroelectric-ferroelectric (AFE-FE) phase transitions are common for AFE materials. To date, the strain and preferred orientation evolution as well as the role of the intermediate FE state during the successive AFE-FE-AFE phase transitions has not been clear. To this end, we have herein studied a typical AFE Pb0.97La0.02(Zr0.56Sn0.33Ti0.11)O3 (PLZST) material using in-situ neutron diffraction. It is striking that the AFE-FE phase transition is not fully reversible: in the electric-field-induced FE state, the induced strain exhibits an elliptical distribution, which in turn leads to significant preferred orientation in the final AFE state after withdrawal of the applied electric-field. The ω-dependent neutron diffraction patterns show clear evidence of the induced strain distribution and associated preferred orientation arising from the AFE-FE phase transition. The current work also provides an explanation for several temperature and electric-field dependent dielectric anomalies as well as unrecovered strain change which appear in AFE materials after exposure to sufficiently high electric fields.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Risk_factors_studies Idioma: En Revista: Sci Rep Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Austrália País de publicação: Reino Unido

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Risk_factors_studies Idioma: En Revista: Sci Rep Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Austrália País de publicação: Reino Unido