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Hydrothermal Processing of PbTiO 3 and PbTiO 3 /Polymer Thin Films from Titanium Metallo‐organic Precursors
Author(s) -
Peterson Chad R.,
Slamovich Elliott B.
Publication year - 1999
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1999.tb01753.x
Subject(s) - materials science , crystallite , thin film , polymer , aqueous solution , titanium , polystyrene , chemical engineering , lead titanate , dielectric , polymer chemistry , ferroelectricity , composite material , nanotechnology , chemistry , organic chemistry , metallurgy , optoelectronics , engineering
PbTiO 3 and PbTiO 3 /polymer thin films were synthesized from metallo‐organic precursors on metallized quartz substrates. Titanium dimethoxy dineodecanoate (TDD) was spin‐cast onto the substrates and converted to polycrystalline TiO 2 via hydrolysis in deionized water for 5 h at 80°C. Polycrystalline PbTiO 3 films were then formed by reacting the TiO 2 films for 4 h at 200°C in aqueous solutions of KOH and Pb(CH 3 COO) 2 ·3H 2 O. Low KOH concentrations suppressed film coarsening, thereby facilitating the formation of fine‐grain continuous PbTiO 3 films. PbTiO 3 /polymer thin films were processed as above after first dissolving TDD and a polystyrene/polybutadiene block copolymer in p ‐xylene. PbTiO 3 and PbTiO 3 /polymer films had relative permittivities of ≈56 and 34 and dielectric strengths of ≈250 and 850 kV/cm, respectively.