Synthesis and Characterization of BaTiO3 Fine Powders by Pulse Jet Spray Pyrolysis

Kenichi Myoujin; Takayuki Kodera; Ryoma Minami; Takuya Omura; Takashi Ogihara; Nobuya Yamada

doi:10.4028/www.scientific.net/KEM.582.36

Paper Titles

TEM Analysis of the Nanostructure of Pb(Mg_1/3Nb_2/3)O₃ Thin Films by MOD Method
p.19

Preparation of Barium Titanate Nanoperticles with Necking Structure/Polymer Complex and their Dielectric Properties
p.23

Preparation of Barium Titanate Grain-Oriented Ceramics by Electrophoresis Deposition Method under High Magnetic Field Using Single-Domain Nanoparticles
p.27

Microstructure Control of Porous Barium Titanate Ceramics and their Sensor Properties
p.32

Synthesis and Characterization of BaTiO₃ Fine Powders by Pulse Jet Spray Pyrolysis
p.36

Domain Dynamics under Unipolar Electric Fields for BaTiO₃ Single Crystals
p.40

Improvement of Insulation Reliability of BaTiO₃-Based Ceramics Using Mixed Conductive Electrode
p.44

Polarization Switching Dynamics of Ferroelectric (Bi_0.5Na_0.5)TiO₃ Single Crystals
p.51

Preparation of BiFeO₃-BaTiO₃Based Thick Films by Screen Printing
p.55

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Synthesis and Characterization of BaTiO₃ Fine Powders by Pulse Jet Spray Pyrolysis

Abstract:

BaTiO₃ precursor powders were synthesized by two types of pulse jet spray pyrolysis1000 and 2000 kcal/h typesusing an aqueous solution of metal salt. All as-prepared powders crystallized to the cubic and other phases. However, the powders almost reached the tetragonal phase through calcination at 900 °C in air for 2 h. The crystallinity of the powders obtained from 2000 kcal/h type pyrolysis was higher than those obtained from the 1000 kcal/h type. When Ba (NO₃)₂ was used, nanoparticle formation at an average particle size of approximately 150 nm, with a narrow size distribution, was observed. The relative density of the sintered body was 87 %. The relative dielectric constant of the BaTiO₃ body was 1450, and its tanδ value was 0.017 at room temperature.