TY - GEN
T1 - Preparation and dielectric properties of dense barium titanate nanoparticle accumulations by electrophoresis deposition method
AU - Wada, Satoshi
AU - Kondo, Shuhei
AU - Kita, Tatsuya
AU - Nakata, Risa
AU - Fujii, Ichiro
AU - Nakashima, Koichi
AU - Miyajima, Naoya
AU - Suzuki, Thoru S.
AU - Uchikoshi, Tetsuro
AU - Sakka, Yoshio
AU - Takei, Takahiro
AU - Kumada, Nobuhiro
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2011
Y1 - 2011
N2 - Dense barium titanate (BaTiO3, BT) nanoparticle accumulations were prepared by an electrophoresis deposition (EPD) method using three kinds of BT nanoparticles with different particles sizes and tetragonality. First, the BT particles were dispersed into ethanol using ball-milling technique, and an optimum milling condition was investigated. As the results, it was confirmed that ball-milling led to a formation of mixture between single-dispersed nanoparticles and aggregated particles. Thus, the aggregated particles in the slurry were removed by a centrifuge in order to obtain narrow the size distribution. Using well-dispersed slurry, BT nanoparticle accumulations were deposited on paradigm electrode by the EPD method. Despite various BT nanoparticles, the dense BT nanoparticle accumulations were obtained at relative densities of around 60 %. After gold electrode deposition on the both surfaces of the accumulations by spattering method, dielectric properties were measured at 20 °C, the highest dielectric constants of around 160 was measured at 10 MHz.
AB - Dense barium titanate (BaTiO3, BT) nanoparticle accumulations were prepared by an electrophoresis deposition (EPD) method using three kinds of BT nanoparticles with different particles sizes and tetragonality. First, the BT particles were dispersed into ethanol using ball-milling technique, and an optimum milling condition was investigated. As the results, it was confirmed that ball-milling led to a formation of mixture between single-dispersed nanoparticles and aggregated particles. Thus, the aggregated particles in the slurry were removed by a centrifuge in order to obtain narrow the size distribution. Using well-dispersed slurry, BT nanoparticle accumulations were deposited on paradigm electrode by the EPD method. Despite various BT nanoparticles, the dense BT nanoparticle accumulations were obtained at relative densities of around 60 %. After gold electrode deposition on the both surfaces of the accumulations by spattering method, dielectric properties were measured at 20 °C, the highest dielectric constants of around 160 was measured at 10 MHz.
KW - Barium titanate
KW - Dense particle accumulations
KW - Dispersion
KW - Electrophoresis deposition
UR - http://www.scopus.com/inward/record.url?scp=79960585204&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79960585204&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.485.35
DO - 10.4028/www.scientific.net/KEM.485.35
M3 - Conference contribution
AN - SCOPUS:79960585204
SN - 9783037851821
T3 - Key Engineering Materials
SP - 35
EP - 38
BT - Electroceramics in Japan XIV
PB - Trans Tech Publications Ltd
ER -