Fabrication of lanthanum doped BaTiO3 fine-grained ceramics with a high dielectric constant and temperature-stable dielectric properties using hydro-phase method at atmospheric pressure |
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| Affiliation: | 1. Division of Advanced Nanomaterials, Key Laboratory of Nanodevices and Applications, Joint Key Laboratory of Functional Nanomaterials and Devices, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215123, China;2. Shaanxi Key Laboratory of Phytochemistry, College of Chemistry & Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, China;3. National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;4. School of Nano Technology and Nano Bionics, University of Science and Technology of China, Hefei 230026, China;5. Division of Nanomaterials, Suzhou Institute of Nano-Tech and Nano-Bionics, Nanchang, Chinese Academy of Sciences, Nanchang 330200, China |
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| Abstract: | Lanthanum doped BaTiO3 powders were synthesized by the hydro-phase method at atmospheric pressure, which controls the uniformity and particle size of the ceramic powders. The effects of La3+ ions concentration on the microstructure and dielectric properties of BaTiO3 ceramics were studied. The results suggested that both the average grain size and dielectric constants (εr and εmax) of the ceramics decreased as the concentration of La3+ increased. The ceramic met the X8R specifications: La3+ ions concentration of 3 mol%, a permittivity of 2322, low dielectric loss of less than 0.6% at room temperature, and average grain size of about 260 nm. |
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| Keywords: | Hydro-phase method at atmospheric pressure Submicron-powders Fine-grained ceramics Dielectric properties X8R |
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