Grain Size Effect on Dielectric Properties of Ba(Zr,Ti)O3 Ceramics

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概要

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• We demonstrated the size effect on the dielectric properties of BaZrxTi1-xO3 (x = 0.2 and 0.25) ceramics that showed relaxor behavior. Fine-grained BaZrxTi1-xO3 ceramics with micrometer- and nanometer-sized grains were fabricated by the two-step sintering method and aerosol deposition (AD) method, respectively. From the dielectric measurement, the permittivity of the BaZrxTi1-xO3 ceramics markedly decreased with decreasing grain size below 3 μm. The permittivity of the BaZrxTi1-xO3 nanograined ceramics decreased with increasing Zr content and was much smaller than the permittivity of the BaTiO3 nanograined ceramics. These results indicated that the BaZrxTi1-xO3 ceramics were more susceptible to the grain size effect than the pure BaTiO3 ceramics. The dielectric responses to temperature and frequency suggested that the volume fraction of polar nanoregions decreased and the relaxor characteristics increased with decreasing grain size in BaZrxTi1-xO3 ceramics.

• 2012-09-25

著者

• Tsurumi Takaaki

  Nano-Phononics Lab., Graduate School of Science and Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan

• Hoshina Takuya

  Nano-Phononics Laboratory, Graduate School of Science and Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan

• Takeda Hiroaki

  Nano-Phononics Laboratory, Graduate School of Science and Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan

• Yamazaki Takahiro

  Nano-Phononics Laboratory, Graduate School of Science and Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan

• Furuta Tsutomu

  Nano-Phononics Laboratory, Graduate School of Science and Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan

• Takeda Hiroaki

  Nano-Phononics Lab., Graduate School of Science and Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan

• Hoshina Takuya

  Nano-Phononics Lab., Graduate School of Science and Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan

• Furuta Tsutomu

  Nano-Phononics Lab., Graduate School of Science and Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan

関連論文

• Shrinkage Behaviors and Sintering Mechanism of BaTiO3 Ceramics in Two-Step Sintering
• Size Effect of Nanograined BaTiO3 Ceramics Fabricated by Aerosol Deposition Method
• Identicalness between Piezoelectric Loss and Dielectric Loss in Converse Effect of Piezoelectric Ceramic Resonators (Special Issue : Ferroelectric Materials and Their Applications)
• Grain Size Effect on Dielectric Properties of Ba(Zr,Ti)O3 Ceramics
• Nonlinear Shear Responses of Lead Zirconate Titanate Piezoelectric Ceramics
• Mechanism Underlying Stacking-Layer Effect of Dielectric Properties of Multilayer Ceramic Capacitors
• Domain Contribution to Dielectric Properties of Fine-Grained BaTiO3 Ceramics

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