Epitaxial Growth of Anisotropically Shaped, Single-crystal Particles of Cubic SrTiO3

A novel method for synthesizing anisotropically shaped particles of materials having cubic symmetry is reported. Anisotropically shaped single-crystal particles of cubic SrTiO3 were obtained by epitaxial growth on tabular tetragonal Sr3Ti2O7. Transmission electron microscopy revealed that both the s...

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Bibliographic Details
Published in:Journal of materials research 2000-04, Vol.15 (4), p.846-849
Main Authors: Watari, Koji, Brahmaroutu, Bhaskar, Messing, Gary L., Trolier-McKinstry, Susan, Cheng, Shang-Cong
Format: Article
Language:English
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Summary:A novel method for synthesizing anisotropically shaped particles of materials having cubic symmetry is reported. Anisotropically shaped single-crystal particles of cubic SrTiO3 were obtained by epitaxial growth on tabular tetragonal Sr3Ti2O7. Transmission electron microscopy revealed that both the shape and the size of the single-crystal particles was regulated by selecting a precursor material that can act as a reaction site in molten KCl and has an epitaxial relation with SrTiO3. The [001] and [110] directions of tabular SrTiO3 are parallel to the [001] and [110] directions of the Sr3Ti2O7 host particle, respectively. Tabular SrTiO3 particles with rectangular faces having an edge length of 10–20 μm and a thickness of ˜2 μm were obtained by reacting TiO2 and tabular Sr3Ti2O7 particles of the same edge length in molten KCl.
ISSN:0884-2914
2044-5326
DOI:10.1557/JMR.2000.0121