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Achieving X8R specifications and enhanced anti-reduction in fine-grained BaTiO3: The multiple roles of chemical coating erbium.

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Title: Achieving X8R specifications and enhanced anti-reduction in fine-grained BaTiO3: The multiple roles of chemical coating erbium.
Authors: Ma, Yuanchao1,2,3,4 (AUTHOR), Li, Lingxia1,2,3,4 (AUTHOR) Li_ling_xia_tju@163.com, Cui, Binghao1,2,3,4 (AUTHOR), Huang, Kewen1,2,3,4 (AUTHOR), Du, Mingkun1,2,3,4 (AUTHOR) dmkun@tju.edu.cn
Source: Ceramics International. Jun2026:Part A, Vol. 52 Issue 15, p28510-28519. 10p.
Subjects: Barium titanate, Erbium compounds, Dielectric properties, Thermal stability, Nanostructured materials, Ceramic capacitors
Abstract: To address the demand for high-performance automotive electronics, this study develops Er3+-modified BaTiO 3 -based ceramics with a higher upper operating temperature (>125 °C), fine-grain, and anti-reduction properties for base metal electrode (BME) multilayer ceramic capacitors (MLCCs) utilizing a chemical coating process. The addition of Er3+ inhibits grain growth, promotes phase transition and hinders oxygen vacancy migration, significantly enhancing the temperature stability and insulation resistivity under a reducing atmosphere. At an optimal coated level of 0.03 mol, the ceramic achieves a fine-grain (195 nm) microstructure and meets the EIA X8R specifications (−55 °C to 150 °C, ΔC/C 25°C ≤ ±15%). The material demonstrates excellent properties, including a high dielectric constant (ε r ∼ 1705), low dielectric loss (tanδ ∼ 0.0054), and competitive insulation resistivity (ρ v ∼ 3.37 × 1012 Ω cm). These findings provide theoretical guidance for developing temperature-stable BME MLCCs with a single-layer thickness of only 1 μm or even less. [ABSTRACT FROM AUTHOR]
Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 194171449
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  Data: Achieving X8R specifications and enhanced anti-reduction in fine-grained BaTiO3: The multiple roles of chemical coating erbium.
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  Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. Jun2026:Part A, Vol. 52 Issue 15, p28510-28519. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Barium+titanate%22">Barium titanate</searchLink><br /><searchLink fieldCode="DE" term="%22Erbium+compounds%22">Erbium compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Dielectric+properties%22">Dielectric properties</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+stability%22">Thermal stability</searchLink><br /><searchLink fieldCode="DE" term="%22Nanostructured+materials%22">Nanostructured materials</searchLink><br /><searchLink fieldCode="DE" term="%22Ceramic+capacitors%22">Ceramic capacitors</searchLink>
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  Data: To address the demand for high-performance automotive electronics, this study develops Er3+-modified BaTiO 3 -based ceramics with a higher upper operating temperature (>125 °C), fine-grain, and anti-reduction properties for base metal electrode (BME) multilayer ceramic capacitors (MLCCs) utilizing a chemical coating process. The addition of Er3+ inhibits grain growth, promotes phase transition and hinders oxygen vacancy migration, significantly enhancing the temperature stability and insulation resistivity under a reducing atmosphere. At an optimal coated level of 0.03 mol, the ceramic achieves a fine-grain (195 nm) microstructure and meets the EIA X8R specifications (−55 °C to 150 °C, ΔC/C 25°C ≤ ±15%). The material demonstrates excellent properties, including a high dielectric constant (ε r ∼ 1705), low dielectric loss (tanδ ∼ 0.0054), and competitive insulation resistivity (ρ v ∼ 3.37 × 1012 Ω cm). These findings provide theoretical guidance for developing temperature-stable BME MLCCs with a single-layer thickness of only 1 μm or even less. [ABSTRACT FROM AUTHOR]
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  Label:
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  Data: <i>Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.ceramint.2026.04.381
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      – TitleFull: Achieving X8R specifications and enhanced anti-reduction in fine-grained BaTiO3: The multiple roles of chemical coating erbium.
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              Text: Jun2026:Part A
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              Y: 2026
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