Journal of the Korean Physical Society, Vol. 49, December 2006, pp. S680∼S683

Synthesis, Structure and Dielectric Properties of BaTiO3 Nanoparticles
Jong-Ho Park
Department of Science Education, Chinju National University of Education, Jinju 660-756

Dae Hwang Yoo, Chung Sik Kim and Ho-Soon Yang
Department of Physics, Pusan National University, Busan 609-735

Byung Kee Moon
Department of Physics, Pukyong National University, Busan 608-737

Gun-Joo Jung
Division of Architecture, Pukyong National University, Busan 608-737

E. D. Jeong and K. S. Hong∗
Busan Center, Korea Basic Science Institute, Busan 609-735 (Received 13 February 2006) We synthesized nano-sized barium titanate (BaTiO3 ) powders by using the solvothermal …ver más…

Buessem et al. [9] proposed that the internal stresses in fine grained BaTiO3 must be much greater than in the coarse-grained ceramic, thus leading to a higher permittivity at room temperature. The mobility of the 90◦ domain walls in very fine-grained BaTiO3 is hindered, and only less than 25 % of εr was achieved. As the BaTiO3 ceramics have a very large room-temperature dielectric constant, they are mainly used in multilayer capacitor applications. Grainsize control, especially for nano-sized particles, is very important for these applications [10–12]. Nano-sized BaTiO3 materials have been attracting great interest, due to their applications in technical and fundamental research in many areas. BaTiO3 nanoparticles are applicable to the miniaturization of microelectronic devices with multilayer ceramic capacitors. A number of investigators have examined the range of processing conditions under which hydrothermally derived BaTiO3 could be obtained. In this method, it is synthesized at