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Skewness: Important parameter to affect the dielectric properties of BaTiO3.

Skewness: Important parameter to affect the dielectric properties of BaTiO3.

Authors :
Lim, Jong-Chan
Kim, Sang-il
Hong, Gyo-Hee
Hwang, Ji-Hyun
Yang, Heesun
Lee, Kyu Hyoung
Kim, Hyun-Sik
Source :
Journal of Asian Ceramic Societies; Sep2022, Vol. 10 Issue 3, p613-620, 8p
Publication Year :
2022

Abstract

Recent electric vehicle multilayer ceramic capacitors (MLCCs) adopt submicron-sized solid-state synthesized BaTiO<subscript>3</subscript> for dielectric layers for high reliability. Unlike BaTiO<subscript>3</subscript> nanoparticles synthesized by the hydrothermal method, particle size distribution control becomes demanding with the solid-state synthesis. Here, BaTiO<subscript>3</subscript> with 260 and 390 nm average particle sizes were synthesized using a solid-state method, and the dielectric properties of the samples sintered at 1100, 1150, and 1200°C were studied in terms of particle size distributions. Notably, BaTiO<subscript>3</subscript> samples sintered with 260 nm particles with smaller grain sizes and lower tetragonality exhibited higher dielectric properties than those prepared with 390 nm particles. The reasons behind the high dielectric performance were found in the lower skewness of the 260 nm particles, which produced a higher density of the sintered sample. For electric vehicle MLCC BaTiO<subscript>3</subscript>, engineering their skewness is as important as controlling their grain size or tetragonality for high dielectric performance. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
21870764
Volume :
10
Issue :
3
Database :
Complementary Index
Journal :
Journal of Asian Ceramic Societies
Publication Type :
Academic Journal
Accession number :
159583969
Full Text :
https://doi.org/10.1080/21870764.2022.2097603