Microstructure and surface morphology evolution of pulsed laser deposited piezoelectric BaTiO3 films

Yuan Zhou, Chee Sung Park, Chun Hsien Wu, Deepam Maurya, Mitsuhiro Murayama, Ashok Kumar, R. S. Katiyar, Shashank Priya

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

In this paper, we analyze and elucidate the microstructure and surface morphology evolution of the piezoelectric BaTiO3 films grown by pulsed laser deposition on platinized silicon substrates. The films exhibited a columnar structure where the surface morphology evolved from a pyramid to star-like to hexagram shape with (111)-preferred orientation and increasing film thickness. In each column, a twin lamellae structure was formed that was found to enhance the lateral growth and coalescence of the grains. The high stability along the reentrant angle of the twin lamellae controlled the competition between the columnar growth and their coarsening. We present a growth model for BaTiO3 films and demonstrate the correlation of the growth mode and lamella twins during morphological evolution.

Original languageEnglish (US)
Pages (from-to)6308-6315
Number of pages8
JournalJournal of Materials Chemistry C
Volume1
Issue number39
DOIs
StatePublished - Oct 21 2013

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry

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