TY - JOUR
T1 - CaCu 3 Ti 4O 12/CaTiO 3 composite dielectrics
T2 - BaPb -free dielectric ceramics with high dielectric constants
AU - Kobayashi, Wataru
AU - Terasaki, I.
PY - 2005/7/18
Y1 - 2005/7/18
N2 - We have measured dielectric properties of Ca1+x Cu3-x Ti4 O12 (x=0, 0.1, 0.5, 1, 1.5, 2, 2.9 and 3), and have found that Ca2 Cu2 Ti4 O12 (a composite of Ca Cu3 Ti4 O12 and CaTi O3) exhibits a high dielectric constant of 1800 with a low dissipation factor of 0.02 below 100 kHz from 220 to 300 K. These are comparable to (or even better than) those of the PbBa -based ceramics, which could be attributed to a barrier layer of CaTi O3 on the surface of the Ca Cu3 Ti4 O12 grains. The composite dielectric ceramics reported here are environmentally benign as they do not contain BaPb.
AB - We have measured dielectric properties of Ca1+x Cu3-x Ti4 O12 (x=0, 0.1, 0.5, 1, 1.5, 2, 2.9 and 3), and have found that Ca2 Cu2 Ti4 O12 (a composite of Ca Cu3 Ti4 O12 and CaTi O3) exhibits a high dielectric constant of 1800 with a low dissipation factor of 0.02 below 100 kHz from 220 to 300 K. These are comparable to (or even better than) those of the PbBa -based ceramics, which could be attributed to a barrier layer of CaTi O3 on the surface of the Ca Cu3 Ti4 O12 grains. The composite dielectric ceramics reported here are environmentally benign as they do not contain BaPb.
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U2 - 10.1063/1.1997278
DO - 10.1063/1.1997278
M3 - Article
AN - SCOPUS:24144488219
SN - 0003-6951
VL - 87
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 3
M1 - 032902
ER -