Effects of B2O3 on the performance of BaO-Sm2O3-TiO2 microwave dielectric ceramics

Bin Li; Qi Tu Zhang

Effects of B₂O₃ on the performance of BaO-Sm₂O₃-TiO₂ microwave dielectric ceramics

Bin Li, Qi Tu Zhang

College of Materials Science and Engineering

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

Abstract

To develop the ceramic material with low-temperature sintering and high-ε microwave dielectric to fulfill the miniaturization of microwave ceramic capacitors, low melting point oxides were added into BaO-Sm₂O₃-TiO₂ (BST) microwave dielectric ceramics to decrease the sintering temperature. The phase composition and microstructure of the ceramics were examined by X-ray diffraction radiation and scanning electron microscope, respectively. The dielectric property was measured by an impedance analyzer. Results indicated that, in Ba₄(Sm_1-0.15 Bi_0.15)_28/3Ti₁₈O₅₄ system, the sintering temperature was 1060°C when the adding content of ZnO and B₂O₃ was 3wt% and 2wt%, respectively. The performance of BST microwave dielectric ceramics was listed as follows: ε_r≈64, tanδ≈1.2×10^-3, τ_f=-8.3×10^-5/°C. The ceramic material would be a promising candidate for microwave resonators and filters.

Original language	English
Pages (from-to)	662-665
Number of pages	4
Journal	Cailiao Kexue yu Gongyi/Material Science and Technology
Volume	17
Issue number	5
State	Published - Oct 2009

Keywords

Dielectric constant
Dielectric loss
Low melting point oxide
Microwave dielectric ceramics

Cite this

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title = "Effects of B2O3 on the performance of BaO-Sm2O3-TiO2 microwave dielectric ceramics",

abstract = "To develop the ceramic material with low-temperature sintering and high-ε microwave dielectric to fulfill the miniaturization of microwave ceramic capacitors, low melting point oxides were added into BaO-Sm2O3-TiO2 (BST) microwave dielectric ceramics to decrease the sintering temperature. The phase composition and microstructure of the ceramics were examined by X-ray diffraction radiation and scanning electron microscope, respectively. The dielectric property was measured by an impedance analyzer. Results indicated that, in Ba4(Sm1-0.15 Bi0.15)28/3Ti18O54 system, the sintering temperature was 1060°C when the adding content of ZnO and B2O3 was 3wt% and 2wt%, respectively. The performance of BST microwave dielectric ceramics was listed as follows: εr≈64, tanδ≈1.2×10-3, τf=-8.3×10-5/°C. The ceramic material would be a promising candidate for microwave resonators and filters.",

keywords = "Dielectric constant, Dielectric loss, Low melting point oxide, Microwave dielectric ceramics",

author = "Bin Li and Zhang, {Qi Tu}",

year = "2009",

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language = "英语",

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journal = "Cailiao Kexue yu Gongyi/Material Science and Technology",

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T1 - Effects of B2O3 on the performance of BaO-Sm2O3-TiO2 microwave dielectric ceramics

AU - Li, Bin

AU - Zhang, Qi Tu

PY - 2009/10

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N2 - To develop the ceramic material with low-temperature sintering and high-ε microwave dielectric to fulfill the miniaturization of microwave ceramic capacitors, low melting point oxides were added into BaO-Sm2O3-TiO2 (BST) microwave dielectric ceramics to decrease the sintering temperature. The phase composition and microstructure of the ceramics were examined by X-ray diffraction radiation and scanning electron microscope, respectively. The dielectric property was measured by an impedance analyzer. Results indicated that, in Ba4(Sm1-0.15 Bi0.15)28/3Ti18O54 system, the sintering temperature was 1060°C when the adding content of ZnO and B2O3 was 3wt% and 2wt%, respectively. The performance of BST microwave dielectric ceramics was listed as follows: εr≈64, tanδ≈1.2×10-3, τf=-8.3×10-5/°C. The ceramic material would be a promising candidate for microwave resonators and filters.

AB - To develop the ceramic material with low-temperature sintering and high-ε microwave dielectric to fulfill the miniaturization of microwave ceramic capacitors, low melting point oxides were added into BaO-Sm2O3-TiO2 (BST) microwave dielectric ceramics to decrease the sintering temperature. The phase composition and microstructure of the ceramics were examined by X-ray diffraction radiation and scanning electron microscope, respectively. The dielectric property was measured by an impedance analyzer. Results indicated that, in Ba4(Sm1-0.15 Bi0.15)28/3Ti18O54 system, the sintering temperature was 1060°C when the adding content of ZnO and B2O3 was 3wt% and 2wt%, respectively. The performance of BST microwave dielectric ceramics was listed as follows: εr≈64, tanδ≈1.2×10-3, τf=-8.3×10-5/°C. The ceramic material would be a promising candidate for microwave resonators and filters.

KW - Dielectric constant

KW - Dielectric loss

KW - Low melting point oxide

KW - Microwave dielectric ceramics

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Effects of B₂O₃ on the performance of BaO-Sm₂O₃-TiO₂ microwave dielectric ceramics

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