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

研究成果: Article同行評審

12 引文 斯高帕斯(Scopus)

摘要

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.

原文English
頁(從 - 到)L554-L560
期刊Surface Science
405
發行號2-3
DOIs
出版狀態Published - 1998 5月 15

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學
  • 表面和介面
  • 表面、塗料和薄膜
  • 材料化學

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