Effect of charge compensation change on the crystal structure, grain growth behavior, and dielectric properties in the La2O3-doped BaTiO3 system with MnCO3 addition

Choi, Woojin; Yang, Daejong; Jeon, Sang‐Chae; Moon, Kyoung‐Seok

doi:10.1016/j.jallcom.2022.165388

Cited by 6 publications

(3 citation statements)

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“…The most prominent feature of the perovskite structure is that it has strong doping ability on both the A-site and the B-site, and other elements are often doped in experiments to enhance their original properties. The tolerance factor t of the perovskite structure was proposed by Goldschmidt in 1926, and the expression for ABO 3 is as follows t = false( r normalA + r normalO false) 2 ( r B + r O ) where r A is the ionic radius of the A-site cation, r O is the ionic radius of the oxygen ion, and r B is the ionic radius of the B-site cation, which is a semi-empirical formula, which can roughly explain the stability of perovskite materials, and the tolerance factor of stable perovskite is between 0.77 < t < 1.10.…”

Section: Results and Discussionmentioning

confidence: 99%

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Development of Yttrium-Doped BaTiO₃ for Next-Generation Multilayer Ceramic Capacitors

et al. 2023

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The use of electronic devices that incorporate multilayer ceramic capacitors (MLCCs) is on the rise, requiring materials with good electrical properties and a narrow band gap. This study synthesized yttrium-substituted barium titanate (Ba 1−x Y x TiO 3 , BYT) using a sol−gel process at 950 °C with varying concentrations of yttrium (0 ≤ x ≤ 0.3). X-ray diffraction analysis showed that the tetragonal phase became less pronounced as the yttrium content increased. The samples had varying grain sizes and porosity, with the BY30%T sample having the narrowest band gap at 2.21 eV. The BYT ceramic with 30% yttrium had a thermal conductivity of up to 7 W/m K and an electrical conductivity down to 0.002 (Ω cm) −1 at 180 °C. The current−voltage characteristics of the BYT MLCC were also studied, showing potential use in next-generation high-capacity MLCCs. This work presents BYT as a promising material for these types of capacitors.

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Section: Results and Discussionmentioning

confidence: 99%

“…Structural Parameters of BYxT, x = 0, 5, 12.5, 15, 20, and 30% Samples elements are often doped in experiments to enhance their original properties. The tolerance factor t of the perovskite structure was proposed by Goldschmidt in 1926, and the expression for ABO 3 is as follows40 …”

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Development of Yttrium-Doped BaTiO₃ for Next-Generation Multilayer Ceramic Capacitors

et al. 2023

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“…Moreover, the samples prepared by the semi-solution method possess a higher relative density at the same additive content, indicating fewer pores in the microstructures. A homogenous microstructure with low porosity plays an important role in both the dielectric properties and breakdown strength [47,48].…”

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Lead-free (Ba,Sr)TiO ₃-based ceramics with superior tunable properties by the semi-solution method

Zhao,

Liu,

Ran

et al. 2024

Journal of Advanced Ceramics

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High-performance dielectric tunable materials with both high dielectric tunability and low dielectric loss are urgently needed for new-generation electronic tunable devices. In the present study, a new system, (Ba 0.675 Sr 0.325 ) 1−x La x Ti 1−x Mn x O 3 (x = 0.25%, 0.5%, 0.75%, and 1.0%), was designed. The acceptor dopant Mn was added to lower dielectric loss, while the donor dopant La was introduced to enhance dielectric tunability. The samples were prepared using the conventional solid-state (CS) reaction method and the semisolution (SS) method. The experimental results showed that the morphology of the ceramics was optimized by further improving the processing procedure. Dense microstructures, homogeneous grains, and uniform dopant distributions could be achieved successfully by the semisolution method. Moreover, a significant enhancement in the tunable properties was realized owing to the improved microstructure mentioned above. The optimum tunable properties occurred in the samples prepared by the semi-solution method at x = 0.75%, with a high dielectric tunability of 85.0%, a low dielectric loss of 0.0011, and an excellent figure of merit (FOM) of 773. The tunable properties of (Ba,Sr)TiO 3 (BST) ceramics were even superior to those of lead-based materials, with an FOM of approximately 700. All the results suggested that the semi-solution method rendered BST ceramics more promising for applications in tunable devices.

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Structural investigations, enhanced dielectric and electrical characteristics of iron-doped Bi2O3 thin films designed for high-frequency applications

Qasrawi,

Atari

2024

J Aust Ceram Soc

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Effect of charge compensation change on the crystal structure, grain growth behavior, and dielectric properties in the La2O3-doped BaTiO3 system with MnCO3 addition

Cited by 6 publications

References 71 publications

Development of Yttrium-Doped BaTiO₃ for Next-Generation Multilayer Ceramic Capacitors

Development of Yttrium-Doped BaTiO₃ for Next-Generation Multilayer Ceramic Capacitors

Lead-free (Ba,Sr)TiO ₃-based ceramics with superior tunable properties by the semi-solution method

Structural investigations, enhanced dielectric and electrical characteristics of iron-doped Bi2O3 thin films designed for high-frequency applications

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Effect of charge compensation change on the crystal structure, grain growth behavior, and dielectric properties in the La2O3-doped BaTiO3 system with MnCO3 addition

Cited by 6 publications

References 71 publications

Development of Yttrium-Doped BaTiO3 for Next-Generation Multilayer Ceramic Capacitors

Development of Yttrium-Doped BaTiO3 for Next-Generation Multilayer Ceramic Capacitors

Lead-free (Ba,Sr)TiO 3-based ceramics with superior tunable properties by the semi-solution method

Structural investigations, enhanced dielectric and electrical characteristics of iron-doped Bi2O3 thin films designed for high-frequency applications

Contact Info

Product

Resources

About

Development of Yttrium-Doped BaTiO₃ for Next-Generation Multilayer Ceramic Capacitors

Development of Yttrium-Doped BaTiO₃ for Next-Generation Multilayer Ceramic Capacitors

Lead-free (Ba,Sr)TiO ₃-based ceramics with superior tunable properties by the semi-solution method