Improvement of solid solution and dielectric properties of (Ba,Sr)(Ti,Ce)O_3 ceramics by slight La doping

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概要

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• Sr and Ce co-doped BaTiO3 ceramics prepared by the cold-pressing ceramic process exhibited a worse solid solution. The influence of slight La doping on solid solution and dielectric properties of (Ba,Sr)(Ti,Ce)O3 ceramics (BSTC) was investigated by XRD, SEM, and dielectric measurements. The results indicated that La addition to BSTC may form a single-phase solid solution up to 15% Sr and result in a grain-size refinement (< 1 μm). The most marked effect is strong broadening and rise of Curie peak around room temperature and a dramatic dielectric-peak shift rate of -56°C/at.% La for dense (Ba1-x-zSrxLaz) (Ti1-z/4-yCey)O3 (x = 0.10, y = 0.03, z = 0.01) ceramic with higher room-temperature dielectric permittivity (∼3500) and lower dielectric loss (< 0.02).

• 2009-07-01

著者

• Lu Da-yong

  Research Center For Materials Science And Engineering Jilin Institute Of Chemical Technology

• LI Xue-Cui

  Institute of Physics, Jilin University

• TODA Masayuki

  WACOM R&D Corporation

• WANG Xue-Feng

  Institute of Physics, Jilin University

• SUN Xiu-Yun

  Research Center for Materials Science and Engineering, Jilin Institute of Chemical Technology

• Sun Xiu-yun

  Research Center For Materials Science And Engineering Jilin Institute Of Chemical Technology

• Toda Masayuki

  Wacom R&d Corporation

• Li Xue-cui

  Institute Of Physics Jilin University

• Wang Xue-feng

  Institute Of Physics Jilin University

関連論文

• Improvement of solid solution and dielectric properties of (Ba,Sr)(Ti,Ce)O_3 ceramics by slight La doping
• Electron Spin Resonance Investigations and Compensation Mechanism of Europium-Doped Barium Titanate Ceramics
• Tetragonal Phase Stabilization Caused by Pr Ions in Ba(Ti0.99Mn0.01)O3 with Mixed Phases
• Point Defect Characteristics of High-$k$ Double Rare-Earth-Doped BaTiO3 Ceramics with Diffuse Phase Transition by Electron Spin Resonance
• Mutual Solid Solubility and Phase Equilibrium in the System BaTiO3--BaCeO3
• 1 Tbit/in.2 Very-High-Density Recording in Mass-Productive Polycrystalline Ferroelectric Thin Film Media
• Raman Evidence for Ba-Site Ce

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