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Ferroelectrics Volume 401, 2010 - Issue 1
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SECTION A: THEORIES, MODELING, DOMAINS, PHASE TRANSITIONS AND CRITICAL PHENOMENA

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

Zhenxing Yue State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
,
Jianqiang Zhao State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
,
Gang Yang State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
&
Longtu Li State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
Pages 56-60 | Received 23 Aug 2009, Accepted 26 Sep 2009, Published online: 01 Dec 2010
 
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Abstract

The DC electric field-dependent properties of BaTiO3-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.

Acknowledgments

This work was supported by the Ministry of Science and Technology of China through the 973-Projected under 2009CB623306 and National Science Funds of China (Grant No. 50621201).

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