Effects of Sr0.6Ba0.4Nb2O6 self-template layer on the structural properties of sol-gel derived Sr 0.6Ba0.4Nb2O6 films

Ai Dong Li, Chee Leung Mak, K. H. Wong, Melanie M T Ho, T. B. Tang, K. M. Yeung, Di Wu, Sen Zu Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)

Abstract

Epitaxial ferroelectric Sr0.6Ba0.4Nb 2O6 (SBN) films were successfully fabricated on MgO and (La0.5Sr0.5)CoO3/MgO (LSCO/MgO) substrates using an innovative technique that combines pulsed laser deposition (PLD) and sol-gel processing method. The PLD grown thin SBN films form self-templates for subsequent deposition of sol-gel derived SBN layers. The structural and morphological properties of these dual-process prepared films were studied by X-ray diffraction, scanning electron microscopy, and atomic force microscopy. They show much improved epitaxy and denser grains than the purely sol-gel derived SBN films without self-template. These marked improvements can be explained by the self-template induced homoepitaxial growth. The electrical measurements confirm the SBN films on LSCO/MgO possess ferroelectric properties with smaller remnant polarization at room temperature.
Original languageEnglish
Pages (from-to)6806-6809
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume41
Issue number11 B
DOIs
Publication statusPublished - 1 Nov 2002

Keywords

  • Epitaxy
  • La Sr )CoO 0.5 0.5 3
  • Pulse laser deposition (PLD)
  • Self-template layer
  • Sol-gel method
  • Sr ba Nb O , ( 0.6 0.4 2 6
  • X-ray diffraction

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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