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Growth of BaTiO3 in Hydrothermally Derived (<100° C) BaTiO3/Polymer Composite Thin Films

Published online by Cambridge University Press:  10 February 2011

David E. Collins  and
Elliott B. Slamovich
David E. Collins
Affiliation:
School of Materials Science and Engineering, Purdue University, West Lafayette, IN 47907.
Elliott B. Slamovich
Affiliation:
School of Materials Science and Engineering, Purdue University, West Lafayette, IN 47907.
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Abstract

Composite BaTiO3/polymer films (<1μm thickness) were processed by the in-situ growth of BaTiO3 particles in a polymer matrix. A solution of a polybutadiene/polystyrene triblock copolymer and titanium diisoproxide bis(ethlyacetoacetate) dissolved in toluene was cast onto a Ag-coated substrate. Subsequent hydrothermal treatment of the films in 1.0 M Ba(OH)2 solutions at 80° C resulted in the nucleation and growth of BaTiO3 within the polymer matrix. The volume fraction/connectivity of BaTiO3 was controlled by varying the relative amounts of titanium precursor and polymer in solution. Growth of BaTiO3 within the polymer was examined by infrared spectroscopy and electron microscopy. The dielectric constant of the composite films increased with BaTiO3 content.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 457: Symposium V – Nanophase and Nanocomposite Materials II , 1996 , 445
Copyright
Copyright © Materials Research Society 1997

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