Microwave dielectric properties of MgNb2O6 ceramics with Fe2O3 additives

Cheng Hsing Hsu; Ching Fang Tseng; Cheng Liang Huang

doi:10.1143/JJAP.44.8043

Microwave dielectric properties of MgNb₂O₆ ceramics with Fe₂O₃ additives

Cheng Hsing Hsu, Ching Fang Tseng, Cheng Liang Huang

Department of Electrical Engineering

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

13 Citations (Scopus)

Abstract

The dielectric properties and microstructures of MgNb₂O ₆ ceramics with Fe₂O₃ additions (0.5-2wt%) prepared with a conventional solid-state route have been investigated. It is found that MgNb₂O₆ ceramics can be sintered at 1140°C due to the liquid phase effect of Fe₂O₃ additions. At 1140°C, MgNb₂O₆ ceramics with 0.5 wt% Fe ₂O₃ addition possess a dielectric constant (ε_r,) of 20.5, a Q x f value of 70000 (9 GHz) and a temperature coefficient of resonant frequency (τ_f) of -49 ppm/°C. The Fe₂O₃-doped MgNb₂O₆ ceramics can find applications in microwave devices requiring low sintering temperatures.

Original language	English
Pages (from-to)	8043-8047
Number of pages	5
Journal	Japanese Journal of Applied Physics
Volume	44
Issue number	11
DOIs	https://doi.org/10.1143/JJAP.44.8043
Publication status	Published - 2005 Nov 9

All Science Journal Classification (ASJC) codes

General Engineering
General Physics and Astronomy

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abstract = "The dielectric properties and microstructures of MgNb2O 6 ceramics with Fe2O3 additions (0.5-2wt%) prepared with a conventional solid-state route have been investigated. It is found that MgNb2O6 ceramics can be sintered at 1140°C due to the liquid phase effect of Fe2O3 additions. At 1140°C, MgNb2O6 ceramics with 0.5 wt% Fe 2O3 addition possess a dielectric constant (εr,) of 20.5, a Q x f value of 70000 (9 GHz) and a temperature coefficient of resonant frequency (τf) of -49 ppm/°C. The Fe2O3-doped MgNb2O6 ceramics can find applications in microwave devices requiring low sintering temperatures.",

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N2 - The dielectric properties and microstructures of MgNb2O 6 ceramics with Fe2O3 additions (0.5-2wt%) prepared with a conventional solid-state route have been investigated. It is found that MgNb2O6 ceramics can be sintered at 1140°C due to the liquid phase effect of Fe2O3 additions. At 1140°C, MgNb2O6 ceramics with 0.5 wt% Fe 2O3 addition possess a dielectric constant (εr,) of 20.5, a Q x f value of 70000 (9 GHz) and a temperature coefficient of resonant frequency (τf) of -49 ppm/°C. The Fe2O3-doped MgNb2O6 ceramics can find applications in microwave devices requiring low sintering temperatures.

AB - The dielectric properties and microstructures of MgNb2O 6 ceramics with Fe2O3 additions (0.5-2wt%) prepared with a conventional solid-state route have been investigated. It is found that MgNb2O6 ceramics can be sintered at 1140°C due to the liquid phase effect of Fe2O3 additions. At 1140°C, MgNb2O6 ceramics with 0.5 wt% Fe 2O3 addition possess a dielectric constant (εr,) of 20.5, a Q x f value of 70000 (9 GHz) and a temperature coefficient of resonant frequency (τf) of -49 ppm/°C. The Fe2O3-doped MgNb2O6 ceramics can find applications in microwave devices requiring low sintering temperatures.

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Microwave dielectric properties of MgNb₂O₆ ceramics with Fe₂O₃ additives

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