Microwave dielectric properties and microstructures of 0.5La(Mg 1/2Ti1/2)O3-0.5CaTiO3 ceramics with B2O3 addition

Cheng Liang Huang; Yuan Bin Chen; Ching Wen Lo

doi:10.1143/JJAP.44.6706

Microwave dielectric properties and microstructures of 0.5La(Mg _1/2Ti_1/2)O₃-0.5CaTiO₃ ceramics with B₂O₃ addition

Cheng Liang Huang, Yuan Bin Chen, Ching Wen Lo

Department of Electrical Engineering

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

2 Citations (Scopus)

Abstract

La(Mg_1/2Ti_1/2)O₃-based ceramics are prepared with a conventional solid-state route. With 50 mol % CaTiO₃ addition, 0.5La(Mg_1/2Ti_1/2)O₃-0.5CaTiO ₃ ceramics with 0.25wt% B₂O₃ ε_r, value of ∼42.92-43.38, Q × f values of ∼24000 (at 7 GHz) and τ_f values of ∼-8.9 ppm/°C. However, the sintering temperature remains above 1400°C. Doping with B₂O ₃ (up to 1 wt%) can effectively promote the densification and improve the dielectric properties of 0.5La(Mg_1/2Ti_1/2)O ₃-0.5CaTiO_1/2-ceramics. The effects of a B ₂O₃ additive on the microstructures, phase formation and microwave dielectric properties of La(Mg_1/2Ti_1/2)O ₃-CaTiO₃ ceramics system are investigated. The Q × f value of B₂O₃-doped 0.5La(Mg_1/2Ti _1/2)O₃-0.5CaTiO₃ ceramics can be improved to 28000 (at 8 GHz) at 1400°C due to the liquid-phase effect. The microwave dielectric properties are found to strongly correlate with the sintering temperature as well as the amount of B₂O₃ added.

Original language	English
Pages (from-to)	6706-6708
Number of pages	3
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	44
Issue number	9 A
DOIs	https://doi.org/10.1143/JJAP.44.6706
Publication status	Published - 2005 Sep 8

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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@article{29460987c1ce47f4be06ee458a538ed5,

title = "Microwave dielectric properties and microstructures of 0.5La(Mg 1/2Ti1/2)O3-0.5CaTiO3 ceramics with B2O3 addition",

abstract = "La(Mg1/2Ti1/2)O3-based ceramics are prepared with a conventional solid-state route. With 50 mol % CaTiO3 addition, 0.5La(Mg1/2Ti1/2)O3-0.5CaTiO 3 ceramics with 0.25wt% B2O3 εr, value of ∼42.92-43.38, Q × f values of ∼24000 (at 7 GHz) and τf values of ∼-8.9 ppm/°C. However, the sintering temperature remains above 1400°C. Doping with B2O 3 (up to 1 wt%) can effectively promote the densification and improve the dielectric properties of 0.5La(Mg1/2Ti1/2)O 3-0.5CaTiO1/2-ceramics. The effects of a B 2O3 additive on the microstructures, phase formation and microwave dielectric properties of La(Mg1/2Ti1/2)O 3-CaTiO3 ceramics system are investigated. The Q × f value of B2O3-doped 0.5La(Mg1/2Ti 1/2)O3-0.5CaTiO3 ceramics can be improved to 28000 (at 8 GHz) at 1400°C due to the liquid-phase effect. The microwave dielectric properties are found to strongly correlate with the sintering temperature as well as the amount of B2O3 added.",

author = "Huang, {Cheng Liang} and Chen, {Yuan Bin} and Lo, {Ching Wen}",

year = "2005",

month = sep,

day = "8",

doi = "10.1143/JJAP.44.6706",

language = "English",

volume = "44",

pages = "6706--6708",

journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",

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publisher = "Japan Society of Applied Physics",

number = "9 A",

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Microwave dielectric properties and microstructures of 0.5La(Mg _1/2Ti_1/2)O₃-0.5CaTiO₃ ceramics with B₂O₃ addition. / Huang, Cheng Liang; Chen, Yuan Bin; Lo, Ching Wen.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 44, No. 9 A, 08.09.2005, p. 6706-6708.

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

TY - JOUR

T1 - Microwave dielectric properties and microstructures of 0.5La(Mg 1/2Ti1/2)O3-0.5CaTiO3 ceramics with B2O3 addition

AU - Huang, Cheng Liang

AU - Chen, Yuan Bin

AU - Lo, Ching Wen

PY - 2005/9/8

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N2 - La(Mg1/2Ti1/2)O3-based ceramics are prepared with a conventional solid-state route. With 50 mol % CaTiO3 addition, 0.5La(Mg1/2Ti1/2)O3-0.5CaTiO 3 ceramics with 0.25wt% B2O3 εr, value of ∼42.92-43.38, Q × f values of ∼24000 (at 7 GHz) and τf values of ∼-8.9 ppm/°C. However, the sintering temperature remains above 1400°C. Doping with B2O 3 (up to 1 wt%) can effectively promote the densification and improve the dielectric properties of 0.5La(Mg1/2Ti1/2)O 3-0.5CaTiO1/2-ceramics. The effects of a B 2O3 additive on the microstructures, phase formation and microwave dielectric properties of La(Mg1/2Ti1/2)O 3-CaTiO3 ceramics system are investigated. The Q × f value of B2O3-doped 0.5La(Mg1/2Ti 1/2)O3-0.5CaTiO3 ceramics can be improved to 28000 (at 8 GHz) at 1400°C due to the liquid-phase effect. The microwave dielectric properties are found to strongly correlate with the sintering temperature as well as the amount of B2O3 added.

AB - La(Mg1/2Ti1/2)O3-based ceramics are prepared with a conventional solid-state route. With 50 mol % CaTiO3 addition, 0.5La(Mg1/2Ti1/2)O3-0.5CaTiO 3 ceramics with 0.25wt% B2O3 εr, value of ∼42.92-43.38, Q × f values of ∼24000 (at 7 GHz) and τf values of ∼-8.9 ppm/°C. However, the sintering temperature remains above 1400°C. Doping with B2O 3 (up to 1 wt%) can effectively promote the densification and improve the dielectric properties of 0.5La(Mg1/2Ti1/2)O 3-0.5CaTiO1/2-ceramics. The effects of a B 2O3 additive on the microstructures, phase formation and microwave dielectric properties of La(Mg1/2Ti1/2)O 3-CaTiO3 ceramics system are investigated. The Q × f value of B2O3-doped 0.5La(Mg1/2Ti 1/2)O3-0.5CaTiO3 ceramics can be improved to 28000 (at 8 GHz) at 1400°C due to the liquid-phase effect. The microwave dielectric properties are found to strongly correlate with the sintering temperature as well as the amount of B2O3 added.

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