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Synthesis and Microstructure of Highly Oriented Lead Titanate Thin Films Prepared by a Sol‐Gel Method
Author(s) -
Chen Chiahong,
Ryder Daniel F.,
Spurgeon William A.
Publication year - 1989
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.1151-2916.1989.tb07686.x
Subject(s) - materials science , crystallite , pyrochlore , microstructure , lead titanate , sol gel , thin film , chemical engineering , perovskite (structure) , scanning electron microscope , mineralogy , phase (matter) , analytical chemistry (journal) , ferroelectricity , composite material , nanotechnology , metallurgy , optoelectronics , dielectric , chemistry , chromatography , organic chemistry , engineering
Thin films of PbTiO 3 were deposited on fused silica, resistor‐grade alumina, and single‐crystal (100) MgO by a sol–gel processing method. Whereas the films deposited on silica and alumina substrates were randomly oriented and polycrystalline, highly {100} oriented PbTiO 3 films were grown on the MgO single crystals. The perovskite‐type structure was observed with films deposited on the single‐crystal MgO and annealed at temperatures as low as 470°C, whereas a pyrochlore‐type strcuture was observed with films on fused silica and alumina processed in a similar manner. All films heat‐treated at temperatures in excess of 570°C showed significant formation of a second PbTi 3 O 7 phase. The films were characterized by electron microscopy and glancing‐incidence‐angle X‐ray diffraction.