Nucleation and surface morphology evolution of ferroelectric SrBi2Ta2O9 films studied by atomic force microscopy

Q. D. Jiang, Z. J. Huang, P. Jin, C. L. Chen, A. Brazdeikis, Y. Y. Sun, H. H. Feng, A. Benneker, C. W. Chu

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Nucleation stages and surface morphology evolution of epitaxial SrBi2Ta2O9 thin films on SrTiO3 (001) substrates have been studied by ultra-high vacuum atomic force microscopy. The SrBi2Ta2O9 nucleates and grows half-unit-cell by half-unit-cell as well-defined 2D islands at low coverage. After 2D growth stage, which proceeds up to several half unit-cell layers, a transition from 2D to 3D island growth is observed. After coalescence of small 3D islands into larger islands, clear columnar structures, consisting of spirals, emerge. The surfaces of films with their thickness above 1500 A exhibit round hills consisting of curved terraces with sizes of steps ranging from 6 Å to 12.5 Å.

Original languageEnglish
Pages (from-to)L554-L560
JournalSurface Science
Volume405
Issue number2-3
DOIs
Publication statusPublished - 1998 May 15

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'Nucleation and surface morphology evolution of ferroelectric SrBi2Ta2O9 films studied by atomic force microscopy'. Together they form a unique fingerprint.

Cite this