Structural and ferroelectric properties of textured KNN thick films prepared by sol-gel methods

Xiuying Yang, Zhangjie Cheng, Junye Cheng, Dawei Wang, Feng Shi, Guangping Zheng, Hongmei Liu, Deqing Zhang, Maosheng Cao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

6 Citations (Scopus)

Abstract

Based on the templates of sheet-like KNN powders synthesized by a hydrothermal method, lead-free textured KNN films with a thickness of 5 μm were prepared by sol-gel methods. The composition, microstructure, crystal structure, ferroelectric properties and grain growth mechanisms of the textured KNN thick films were studied. It was found that the KNN thick films possessed large grain sizes, dense morphology and increased ratio of Na+. After annealed at 650 °C, the perovskite structure was observed in the KNN thick films textured along the <00l> crystallography direction with an orientation factor of 0.393, reflecting a preferential growth characteristics. Furthermore, the residual polarization value of 12.3 µc/cm2was achieved under the same condition.
Original languageEnglish
Pages (from-to)171-178
Number of pages8
JournalIntegrated Ferroelectrics
Volume176
Issue number1
DOIs
Publication statusPublished - 21 Nov 2016

Keywords

  • sheet-like microstructure
  • Sol-gel methods
  • textured KNN thick film

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Control and Systems Engineering
  • Ceramics and Composites
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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