Lee, BI Wang, X Kwon, SJ Maie, H Kota, R Hwang, JH Park, JG Hu, M 2024-01-21T03:34:57Z 2024-01-21T03:34:57Z 2021-09-02 2006-03 0167-9317 https://pubs.kist.re.kr/handle/201004/135702 New preparation methods for barium titanate powders that can be used for more compact/superior multilayer ceramic capacitors, embedded capacitors, and high capacitance plastic composite materials in microelectronics are described. The methods involve dissolution and precipitation of barium and titanium compounds followed by crystallization at near arribient condition. The particle morphology, tetragonality, and the corresponding dielectric constants are shown to be different for different preparation methods. The mean particle sizes are less than 100 nm and smaller for lower dielectric constant of the solvent medium and higher refluxing temperature. The tetragonality is high for the particles synthesized under totally water-free conditions at 180 degrees C followed by calcination at 600 degrees C. The dielectric constants of particles prepared under water-based ambient conditions were 490 and 900 after dehydroxylation treatment by N-methyl pyrrolidone. (c) 2005 Elsevier B.V. All rights reserved. English ELSEVIER BARIUM-TITANATE POWDERS HYDROTHERMAL SYNTHESIS NANOCRYSTALLINE BATIO3 FINE PARTICLES Synthesis of high tetragonality nanoparticle BaTiO3 Article 10.1016/j.mee.2005.10.058 1 MICROELECTRONIC ENGINEERING, v.83, no.3, pp.463 - 470 MICROELECTRONIC ENGINEERING 83 3 463 470 scie scopus 000236318700012 2-s2.0-33244483067 Engineering, Electrical & Electronic Nanoscience & Nanotechnology Optics Physics, Applied Engineering Science & Technology - Other Topics Optics Physics Article BARIUM-TITANATE POWDERS HYDROTHERMAL SYNTHESIS NANOCRYSTALLINE BATIO3 FINE PARTICLES barium titanate dielectrics nanoparticles tetragonality