Dielectric properties of magnesium oxide at microwave frequency

Jhih Yong Chen; Wei Hung Hsu; Cheng Liang Huang

doi:10.1016/j.jallcom.2010.05.114

Dielectric properties of magnesium oxide at microwave frequency

Jhih Yong Chen, Wei Hung Hsu, Cheng Liang Huang

Department of Electrical Engineering

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

17 Citations (Scopus)

Abstract

To understand the role of a residual MgO phase plays inside a ceramic body, a simple magnesium oxide ceramics was prepared to investigate its microwave dielectric properties. The ε_r and τ_f values of specimens using simple MgO only vary in a small range at the investigated temperatures (1400-1550 °C) implying they are not sensitive to the sintering temperature. However, the Q × f is strongly related to the density of the ceramics and a high Q × f of ∼113,600 GHz can be achieved by sintering the specimen at 1490 °C for 4 h. It indicates MgO may exist as a low-loss dielectric inside a dense ceramic body at microwave frequency.

Original language	English
Pages (from-to)	284-287
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	504
Issue number	1
DOIs	https://doi.org/10.1016/j.jallcom.2010.05.114
Publication status	Published - 2010 Aug 31

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2010.05.114

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abstract = "To understand the role of a residual MgO phase plays inside a ceramic body, a simple magnesium oxide ceramics was prepared to investigate its microwave dielectric properties. The εr and τf values of specimens using simple MgO only vary in a small range at the investigated temperatures (1400-1550 °C) implying they are not sensitive to the sintering temperature. However, the Q × f is strongly related to the density of the ceramics and a high Q × f of ∼113,600 GHz can be achieved by sintering the specimen at 1490 °C for 4 h. It indicates MgO may exist as a low-loss dielectric inside a dense ceramic body at microwave frequency.",

author = "Chen, {Jhih Yong} and Hsu, {Wei Hung} and Huang, {Cheng Liang}",

note = "Funding Information: This work was finically supported by the National Science Council of Taiwan under grant NSC 97-2221-E-006-013-MY3 . Copyright: Copyright 2011 Elsevier B.V., All rights reserved.",

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AU - Hsu, Wei Hung

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N1 - Funding Information: This work was finically supported by the National Science Council of Taiwan under grant NSC 97-2221-E-006-013-MY3 . Copyright: Copyright 2011 Elsevier B.V., All rights reserved.

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N2 - To understand the role of a residual MgO phase plays inside a ceramic body, a simple magnesium oxide ceramics was prepared to investigate its microwave dielectric properties. The εr and τf values of specimens using simple MgO only vary in a small range at the investigated temperatures (1400-1550 °C) implying they are not sensitive to the sintering temperature. However, the Q × f is strongly related to the density of the ceramics and a high Q × f of ∼113,600 GHz can be achieved by sintering the specimen at 1490 °C for 4 h. It indicates MgO may exist as a low-loss dielectric inside a dense ceramic body at microwave frequency.

AB - To understand the role of a residual MgO phase plays inside a ceramic body, a simple magnesium oxide ceramics was prepared to investigate its microwave dielectric properties. The εr and τf values of specimens using simple MgO only vary in a small range at the investigated temperatures (1400-1550 °C) implying they are not sensitive to the sintering temperature. However, the Q × f is strongly related to the density of the ceramics and a high Q × f of ∼113,600 GHz can be achieved by sintering the specimen at 1490 °C for 4 h. It indicates MgO may exist as a low-loss dielectric inside a dense ceramic body at microwave frequency.

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Dielectric properties of magnesium oxide at microwave frequency

Abstract

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