Hydrothermal synthesis and dielectric properties of lanthanum titanate ceramics
来源期刊：中南大学学报(英文版)2005年第3期
论文作者：邓元 南策文
文章页码：251 - 254
Key words：lanthanum titanate; dielectric properties; hydrothermal synthesis
Abstract: Lanthanum titanate (La2/3TiO3) powders were synthesized by hydrothermal method based on the reaction of TiO2, La(NO3) 3and KOH at 160℃for 24 h followed by the treatment of acidification. The microstructure,morphology and dielectric properties were investigated by using X-ray diffraction, scanning electron microscope,transmission electron microscope and impedance method. The results show that the La2/3TiO3 particles consist of nearly homogenous and lamellar grains. The particles can be sintered into porous ceramics above 1 150℃. The dielectric properties of La2/3TiO3 show that both the dielectric constant and the dielectric loss tangent decrease with the increase of frequency.
