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25.08.2018

Microwave dielectric properties and microstructure of a new kind Eu-based Eu(Mg_0.5Ti_0.5)O₃ ceramic

verfasst von: Tao Shi, Jing Zhu

Erschienen in: Rare Metals | Ausgabe 11/2018

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Abstract

A new Eu-based microwave dielectric ceramic, Eu(Mg_0.5Ti_0.5)O₃ (EMT for short), was prepared through conventional solid-state reactions. The EMT ceramics were well densified at 1425 °C and exhibit good microwave dielectric properties with permittivity of 23.92, high quality factor (Q*f) of 66,957 GHz at 8.93 GHz and relatively low-temperature coefficient of resonant frequency of − 20.3 10⁻⁶/K. Additionally, the variations of dielectric constants among Ln(Mg_0.5Ti_0.5)O₃ (Ln represents rare earth elements, LMT) compounds were analyzed. Ionic radii of Ln³⁺, associated with the tolerance factors of the perovskite structure of LMT, were investigated to be the key factor to influence the permittivity. These results indicate that EMT ceramics might be one of the promising candidates as microwave resonators.

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Titel: Microwave dielectric properties and microstructure of a new kind Eu-based Eu(Mg0.5Ti0.5)O3 ceramic
verfasst von: Tao Shi
Jing Zhu
Publikationsdatum: 25.08.2018
Verlag: Nonferrous Metals Society of China
Erschienen in: Rare Metals / Ausgabe 11/2018
Print ISSN: 1001-0521
Elektronische ISSN: 1867-7185
DOI: https://doi.org/10.1007/s12598-018-1104-0

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