TCC behavior of a shell phase in core/shell structure formed in Y-doped BaTiO3:an individual observation (Yttrium이 첨가된 BaTiO3에서 형성된 core/shell 구조에서 shell의 TCC 거동: 독립적 관찰)

Jeon Sang-Chae (전상채)

doi:10.6111/JKCGCT.2020.30.3.110

TCC behavior of a shell phase in core/shell structure formed in Y-doped BaTiO3:an individual observation

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2020, 30(3), pp.110~116
DOI : 10.6111/JKCGCT.2020.30.3.110
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering
Received : May 14, 2020
Accepted : May 28, 2020
Published : June 30, 2020

Jeon Sang-Chae ¹

¹창원대학교

Accredited

ABSTRACT

Grains in the BaTiO3, which is used for a dielectric layer in MLCC(Multi-Layer Ceramic Capacitor) are necessary to form core/shell structure for a stable TCC(Temperature Coefficient of Capacitance) behavior. The shell property has been deduced from the whole TCC behavior of core/shell structure due to its tiny size, ~ few μm. This study demonstrates the individual TCC behavior of the shell phase measured by micro-contact measurement in a temperature range between 35 and 135°C. Pt electrode pairs deposited on an enlarged core/shell structure in a diffusion couple sample made the measurement possible. As a result, the DPT (Diffusion Phase Transition) behavior of the shell phase was revealed as a different TCC behavior from that of the core: a broad peak with Tm at 65°C. This would be also useful experimental data for a modelling that depicts dielectric-temperature behavior of core/shell structure.

KEYWORDS

Multi-layer ceramic capacitor, BaTiO3, Core/shell structure, Temperature coefficient of capacitance, Microcontact measurement, Diffuse phase transition

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Journal of the Korean Crystal Growth and Crystal Technology 2025 KCI Impact Factor : 0.14 KCI-WoS Impact Factor : 0.45

TCC behavior of a shell phase in core/shell structure formed in Y-doped BaTiO3:an individual observation

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* References for papers published after 2025 are currently being built.

Journal of the Korean Crystal Growth and Crystal Technology 2025 KCI Impact Factor : 0.14 KCI-WoS Impact Factor : 0.45

TCC behavior of a shell phase in core/shell structure formed in Y-doped BaTiO3:an individual observation

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KEYWORDS

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