Enhancement of dielectric properties and microstructure control of BaTiO3 by seed-induced solid-state synthesis

Choi, Seong Hyeok; Lee, Yoon-Seok; Lee, Sang Heun; Beak, Kyungki; Cho, Seungchan; Jo, Ilguk; Kim, Jae Won; Moon, Kyoung‐Seok; Choi, Moonhee

doi:10.1016/j.ceramint.2023.02.159

Cited by 9 publications

(2 citation statements)

References 16 publications

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“…Recently, significant efforts have been devoted to the R&D of MLCCs for diverse applications, such as electric/electronic parts for the automotive industry. This has led to a growing interest in the R&D of the solid-state synthesis of BaTiO 3 rather than the hydrothermal synthesis of BaTiO 3 , as the former is conducive to particle size atomization [13,14]. In the solid-state synthesis of BaTiO 3 , powders of carbonates and oxides, such as BaCO 3 and TiO 2 , are mixed, and solid-state reaction with heat treatment at appropriate high temperatures is subsequently performed.…”

Section: Introductionmentioning

confidence: 99%

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Controlling Composite TiO2 Powder Characteristics in the Solid-State Synthesis of BaTiO3 Powders for Improved Sintering and Permittivity: A Comparative Study

Lee,

Kim

et al. 2023

Applied Sciences

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In this study, the anatase–rutile phase fraction of TiO2, which would play a vital role in the solid-state synthesis of BaTiO3, was controlled to form a composite phase. The composite TiO2 was applied to a solid-state synthesis reaction, and the tetragonality, dielectric properties, and microstructure of the resulting BaTiO3 powders were analyzed under different synthesis conditions of TiO2. Furthermore, a comparative analysis of solid-state-synthesized BaTiO3 powders prepared using anatase, rutile, and mixed (anatase + rutile) TiO2 was performed to elucidate the mechanism of improvement in the sintering behavior and dielectric properties of the BaTiO3 powder synthesized using the composite TiO2. As a result of applying composite TiO2, BaTiO3 powder with excellent tetragonality was synthesized. In addition, it is effective in powder growth and the control of powder morphology, so sintering and dielectric properties can be improved at relatively low temperatures.

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Section: Introductionmentioning

confidence: 99%

“…Subsequently, with a continuous supply of thermal energy through heat treatment, BaTiO 3 is produced through the reaction between Ba 2 TiO 4 and TiO 2 . The diffusion of Ba 2+ ions at the TiO 2 interface is the key mechanism of the solid-state synthesis reaction [1,13,[15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Controlling Composite TiO2 Powder Characteristics in the Solid-State Synthesis of BaTiO3 Powders for Improved Sintering and Permittivity: A Comparative Study

Lee,

Kim

et al. 2023

Applied Sciences

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Systematic determination of the optimized Zr content of Ba(ZrxTi1-x)O3 with high dielectric constant at room temperature for high-voltage system application

Kim,

Seo,

Lee

et al. 2024

J. Korean Ceram. Soc.

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In this study, by replacing the B-site element in BaTiO3, a ferroelectric material, with an element with a larger ionic radius, a ferroelectric material with high permittivity at room temperature was synthesized. The powders were prepared by solid-state reaction to perform lattice substitution with Zr4+ (0.72 Å), which has a larger ionic radius than Ti4+ (0.605 Å). To perform effective solid-state reaction and better understand the correlation between variables, this study introduced a design of experiment (DOE) based on the orthogonal array (OA) method included in the PIAno software. By substituting 0.222 mol of Zr, which has a large ionic radius, the crystal structure was deformed through an effective diffuse phase transition (DPT), and this resulted in the largest improvement in permittivity at room temperature. In addition, the powder, which underwent solid-state reaction at 1300 °C, formed the densest structure during sintering, which established the conditions for realizing the best dielectric properties. These results can be utilized as a key material for improving the properties of passive devices used in high-voltage industrial systems in societies undergoing the fourth industrial revolution.

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Solvothermal preparation, formation mechanism, and hydrothermal reaction of 1D Na2Ti4O9 crystals

Jing,

Dai,

Miao

et al. 2024

Ceramics International

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Enhancement of dielectric properties and microstructure control of BaTiO3 by seed-induced solid-state synthesis

Cited by 9 publications

References 16 publications

Controlling Composite TiO2 Powder Characteristics in the Solid-State Synthesis of BaTiO3 Powders for Improved Sintering and Permittivity: A Comparative Study

Controlling Composite TiO2 Powder Characteristics in the Solid-State Synthesis of BaTiO3 Powders for Improved Sintering and Permittivity: A Comparative Study

Systematic determination of the optimized Zr content of Ba(ZrxTi1-x)O3 with high dielectric constant at room temperature for high-voltage system application

Solvothermal preparation, formation mechanism, and hydrothermal reaction of 1D Na2Ti4O9 crystals

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