Microstructures and microwave dielectric properties of Li2O-Nb2O5-ZrO2 ceramics

Chun An Lu; Pang Lin; Sea Fue Wang

doi:10.1016/j.ceramint.2006.04.013

Microstructures and microwave dielectric properties of Li₂O-Nb₂O₅-ZrO₂ ceramics

Chun An Lu
, Pang Lin
, Sea Fue Wang

Department of Materials and Mineral Resources Engineering

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

9 Scopus citations

Abstract

Solid solution of Li_1-4y-xZr_y+4xNb_1-3xO₃ system is a new non-stoichiometric compound with orthorhombic perovskite structure. In this study, the effects of the calcination and the sintering temperatures on the microstructural evolution and microwave dielectric properties of Li_1-4y-xZr_y+4xNb_1-3xO₃ ceramics were performed. Dense Li_0.774Zr_0.057NbO₃ ceramics can be obtained at the sintering temperature of 1150 °C. Li_0.774Zr_0.057NbO₃ phase exists as the main phase with the existence of a minor LiNb₃O₈ phase. Typical microwave dielectric properties for dense Li_0.774Zr_0.057NbO₃ ceramics are as followed: ε_r ≈ 39, Q × f ≈ 4500, and τ_f = -16.6 ppm/°C, measured at 6 GHz.

Original language	English
Pages (from-to)	1389-1393
Number of pages	5
Journal	Ceramics International
Volume	33
Issue number	7
DOIs	https://doi.org/10.1016/j.ceramint.2006.04.013
State	Published - Sep 2007

Keywords

Densification
LiO-NbO-ZrO system
Microstructural evolution
Microwave properties

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10.1016/j.ceramint.2006.04.013

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@article{16789c488ea54b5097d609ede029ec09,

title = "Microstructures and microwave dielectric properties of Li2O-Nb2O5-ZrO2 ceramics",

abstract = "Solid solution of Li1-4y-xZry+4xNb1-3xO3 system is a new non-stoichiometric compound with orthorhombic perovskite structure. In this study, the effects of the calcination and the sintering temperatures on the microstructural evolution and microwave dielectric properties of Li1-4y-xZry+4xNb1-3xO3 ceramics were performed. Dense Li0.774Zr0.057NbO3 ceramics can be obtained at the sintering temperature of 1150 °C. Li0.774Zr0.057NbO3 phase exists as the main phase with the existence of a minor LiNb3O8 phase. Typical microwave dielectric properties for dense Li0.774Zr0.057NbO3 ceramics are as followed: εr ≈ 39, Q × f ≈ 4500, and τf = -16.6 ppm/°C, measured at 6 GHz.",

keywords = "Densification, LiO-NbO-ZrO system, Microstructural evolution, Microwave properties",

author = "Lu, \{Chun An\} and Pang Lin and Wang, \{Sea Fue\}",

year = "2007",

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doi = "10.1016/j.ceramint.2006.04.013",

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volume = "33",

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T1 - Microstructures and microwave dielectric properties of Li2O-Nb2O5-ZrO2 ceramics

AU - Lu, Chun An

AU - Lin, Pang

AU - Wang, Sea Fue

PY - 2007/9

Y1 - 2007/9

N2 - Solid solution of Li1-4y-xZry+4xNb1-3xO3 system is a new non-stoichiometric compound with orthorhombic perovskite structure. In this study, the effects of the calcination and the sintering temperatures on the microstructural evolution and microwave dielectric properties of Li1-4y-xZry+4xNb1-3xO3 ceramics were performed. Dense Li0.774Zr0.057NbO3 ceramics can be obtained at the sintering temperature of 1150 °C. Li0.774Zr0.057NbO3 phase exists as the main phase with the existence of a minor LiNb3O8 phase. Typical microwave dielectric properties for dense Li0.774Zr0.057NbO3 ceramics are as followed: εr ≈ 39, Q × f ≈ 4500, and τf = -16.6 ppm/°C, measured at 6 GHz.

AB - Solid solution of Li1-4y-xZry+4xNb1-3xO3 system is a new non-stoichiometric compound with orthorhombic perovskite structure. In this study, the effects of the calcination and the sintering temperatures on the microstructural evolution and microwave dielectric properties of Li1-4y-xZry+4xNb1-3xO3 ceramics were performed. Dense Li0.774Zr0.057NbO3 ceramics can be obtained at the sintering temperature of 1150 °C. Li0.774Zr0.057NbO3 phase exists as the main phase with the existence of a minor LiNb3O8 phase. Typical microwave dielectric properties for dense Li0.774Zr0.057NbO3 ceramics are as followed: εr ≈ 39, Q × f ≈ 4500, and τf = -16.6 ppm/°C, measured at 6 GHz.

KW - Densification

KW - LiO-NbO-ZrO system

KW - Microstructural evolution

KW - Microwave properties

UR - https://www.scopus.com/pages/publications/34547463660

U2 - 10.1016/j.ceramint.2006.04.013

DO - 10.1016/j.ceramint.2006.04.013

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AN - SCOPUS:34547463660

SN - 0272-8842

VL - 33

SP - 1389

EP - 1393

JO - Ceramics International

JF - Ceramics International

IS - 7

ER -

Microstructures and microwave dielectric properties of Li₂O-Nb₂O₅-ZrO₂ ceramics

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