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

Published online by Cambridge University Press:  31 January 2011

Koji Watari ,
Bhaskar Brahmaroutu ,
Gary L. Messing ,
Susan Trolier-McKinstry  and
Shang-Cong Cheng
Koji Watari
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
Bhaskar Brahmaroutu
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
Gary L. Messing
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
Susan Trolier-McKinstry
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
Shang-Cong Cheng
Affiliation:
Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802
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Abstract

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.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 15 , Issue 4 , April 2000 , pp. 846 - 849
Copyright
Copyright © Materials Research Society 2000

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