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Interrelation of Ferroelectricity, Morphology, and Thickness in Sol–Gel‐Derived PbZr x Ti 1− x O 3 Films
Author(s) -
Etin Aleksey,
Shter Gennady E.,
Grader Gideon S.,
Reisner George M.
Publication year - 2007
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.1551-2916.2006.01371.x
Subject(s) - ferroelectricity , materials science , coercivity , pyrochlore , hysteresis , microstructure , sol gel , thin film , morphology (biology) , analytical chemistry (journal) , mineralogy , crystallography , condensed matter physics , composite material , dielectric , nanotechnology , chemistry , phase (matter) , physics , optoelectronics , chromatography , organic chemistry , biology , genetics
This paper describes the evolution of a sol–gel‐derived PbZr x Ti 1− x O 3 film microstructure and ferroelectricity as a function of thickness in the 0.2–1.2 μm range. In particular, we concentrate on the pyrochlore (Py) content in the film studied by the quantitative analysis of HRSEM images and corresponding ferroelectric properties. We have found that the Py content decreases with increasing thickness and have explained this phenomenon by a different extent of lead loss during processing. The ferroelectric hysteresis and fatigue of the films are correlated with the Py content. This paper shows that the Py presence in the film is responsible for the thickness‐dependence of the coercive field.