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Enhanced ferroelectric and piezoelectric response in Mn-doped Bi 0.5 Na 0.5 TiO 3 -BaTiO 3 lead-free film by pulsed laser deposition

  • Chengchao Jin
  • , Feifei Wang*
  • , Chung Ming Leung
  • , Qirong Yao
  • , Yanxue Tang
  • , Tao Wang
  • , Wangzhou Shi
  • *Corresponding author for this work
  • Shanghai Normal University
  • Hong Kong Polytechnic University

Research output: Contribution to journalArticlepeer-review

Abstract

Mn-doped Bi 0.5 Na 0.5 TiO 3 -BaTiO 3 thin film with the composition around the morphotropic phase boundary was grown on Pt-electrodized Si substrate by pulsed laser deposition. Highly (1 0 0)-oriented film with pure perovskite structure was obtained through carefully controlling the growth conditions. Well-defined ferroelectric P-E loop was obtained with the average remnant polarization P r and coercive field E c of ∼11.3 μC/cm 2 and ∼6.5 kV/mm, respectively. Polycrystalline structures and multidomain states were revealed by piezoresponse force microscopy and large local strain response was obtained with the normalized strain S max /E max up to 92 pm/V. The excellent global electrical properties make it quite promising in environmental-friendly ferroelectric and piezoelectric devices.

Original languageEnglish
Pages (from-to)348-351
Number of pages4
JournalApplied Surface Science
Volume283
DOIs
StatePublished - 15 Oct 2013
Externally publishedYes

Keywords

  • Ferroelectric properties
  • Lead-free thin film
  • Piezoelectric properties
  • Pulsed laser deposition

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