Electric Field-Dependent Properties of BaTiO3-Based Multilayer Ceramic Capacitors

The DC electric field-dependent properties of BaTiO 3 -based multilayer ceramic capacitors (MLCCs) with X7R specification were studied. The dependence of dielectric-temperature behavior on electric field showed that a field-induced phase transition took place under high DC field, which was character...

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Bibliographic Details
Published in:Ferroelectrics 2010-01, Vol.401 (1), p.56-60
Main Authors: Yue, Zhenxing, Zhao, Jianqiang, Yang, Gang, Li, Longtu
Format: Article
Language:English
Subjects:
BaTiO
Capacitors
Ceramics
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Curie temperature
DC field
Dielectric constant
dielectric properties
Dielectric properties of solids and liquids
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Direct current
Domain structure
hysteresis
Electric charge
Exact sciences and technology
Ferroelectric materials
Ferroelectricity and antiferroelectricity
MLCC
Multilayers
Permittivity (dielectric function)
Physics
Specifications
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Summary:The DC electric field-dependent properties of BaTiO 3 -based multilayer ceramic capacitors (MLCCs) with X7R specification were studied. The dependence of dielectric-temperature behavior on electric field showed that a field-induced phase transition took place under high DC field, which was characterized by the enhanced Curie temperature and the decreased dielectric constant. The ferroelectric measurements showed the field-dependent hysteresis behavior, which was considered to be originated from the field induced transition and the injected charge effects. The current-voltage measurement for MLCCs revealed that a transition from an Ohmic linear dependence to a nonlinear behavior, corresponding to the space charge limited conduction mechanism.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150191003670424