Title :
Electrical properties and distortion characteristics of MLCCs with composite dielectric material
Author :
Miyauchi, Mari ; Takano, Kosuke ; Sato, Akira ; Nakano, Yukie
Author_Institution :
TDK Corp., Chiba
Abstract :
The electrical properties and distortion characteristics of multilayer ceramic capacitors (MLCCs) with composite dielectric material, which consisted of ferroelectric and paraelectric phases were studied. In composite dielectrics, BaTiO3 (BTO) was used for the ferroelectric phase, while SrTiO3 (STO) and CaTiO3 CTO were used for the paraelectric phases. The dielectric ceramics with composite structure of MLCC were prepared with these perovskite grains and additives. The temperature dependence of dielectric constant of the MLCC could be controlled by the volume ratio of ferroelectric and paraelectric phases. The distortion characteristic of MLCC with composite structure was smaller than that of BTO.
Keywords :
barium compounds; calcium compounds; ceramic capacitors; composite materials; dielectric materials; ferroelectric capacitors; ferroelectric ceramics; permittivity; strontium compounds; BaTiO3; CaTiO3; SrTiO3; composite dielectric material; dielectric constant; distortion characteristics; ferroelectric phases; multilayer ceramic capacitors; paraelectric phases; perovskite grains; Additives; Capacitors; Ceramics; Dielectric constant; Dielectric materials; Ferroelectric materials; Nonhomogeneous media; Phase distortion; Temperature control; Temperature dependence;
Conference_Titel :
Applications of Ferroelectrics, 2007. ISAF 2007. Sixteenth IEEE International Symposium on
Conference_Location :
Nara
Print_ISBN :
978-1-4244-1334-8
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2007.4393323
