Microstructural properties of (Ba, Sr)TiO3 films fabricated from BaF2/SrF2/TiO2 amorphous multilayers using the combinatorial precursor method

I. Takeuchi, K. Chang, R. P. Sharma, L. A. Bendersky, H. Chang, X. D. Xiang, E. A. Stach, C. Y. Song

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

We have investigated the microstructure of (Ba, Sr)TiO3 films fabricated from BaF2/SrF2/TiO2 amorphous multilayers. Rutherford backscattering spectroscopy and x-ray diffraction studies show that a controlled thermal treatment can interdiffuse the multilayers so as to create predominantly single-phase epitaxial (Ba, Sr)TiO3 films. A high resolution cross-sectional transmission electron microscopy investigation of the processed films shows that they consist of large epitaxial grains of (Ba, Sr)TiO3 with atomically sharp interfaces with the LaAlO3 substrates. In addition, we have identified regions where polycrystalline and transient phases exist in small pockets in the film matrix. The results here indicate that the combinatorial thin-film synthesis using precursors can produce (Ba, Sr)TiO3 films in combinatorial libraries which exhibit properties similar to those films made by conventional techniques.

Original languageEnglish
Pages (from-to)2474-2478
Number of pages5
JournalJournal of Applied Physics
Volume90
Issue number5
DOIs
Publication statusPublished - 2001 Sept 1

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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