Paper Titles
Control of Mesoscopic Particle Structure in Barium Titanate Nanoparticles and their Dielectric Properties
p.59
Ferroelectric Distortion in Bi4Ti3O12 Studied by Neutron Powder Diffraction
p.65
Domain Dynamics of C-Axis Polarization in Bismuth Titanate Crystals
p.69
Electromechanical Poling Treatment of Barium Titanate Single Crystals and their Piezoelectric Properties
p.73
Defects and Leakage Current in PbTiO3 Single Crystals
p.77
Syntheisis and Characterization of Bismuth Tungstate Crystals by Solution Growth Technique
p.81
Defect Control for Superior Properties in K0.5Na0.5NbO3 Single Crystals
p.85
Introduction of Fine Engineered Domain Configuration into Potassium Niobate Single Crystals
p.89
Phase Transition Temperatures of Divalent and Trivalent Ions Substituted (Bi1/2Na1/2)TiO3 Ceramics
p.93

Defects and Leakage Current in PbTiO3 Single Crystals

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Abstract:

Single crystals of PbTiO3 (PT) were grown by a self flux method, and effects of lattice defects on the leakage current properties were investigated. While PT crystals annealed in air at 700 oC showed a leakage current density of the order of 10-5 A/cm2, annealing under a high oxygen partial pressure of 35 MPa increased leakage current density to 10-4 A/cm2. The increase in leakage current by the oxidation treatment provides direct evidence that electron hole is a detrimental carrier for the leakage current property of PT at room temperature. The vacancies of Pb are suggested to act as an electron acceptor for generating electron holes.

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Periodical:

Key Engineering Materials (Volume 350)

Pages:

77-80

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.350.77

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Online since:

October 2007

Authors:

Minoru Tamada, Yuji Noguchi, Masaru Miyayama

Keywords:

Defect Control, Ferroelectricity, Lead Titanate, Perovskite Oxide, Single Crystal

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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