Microwave dielectric properties and microstructures of the 11Li2O-3Nb2O5-12TiO2 ceramics with B2O3 addition

Qun Zeng; Wei Li; Jian lin Shi; Xian lin Dong; Jing kun Guo

doi:10.1016/j.materresbull.2007.02.040

Microwave dielectric properties and microstructures of the 11Li₂O-3Nb₂O₅-12TiO₂ ceramics with B₂O₃ addition

Qun Zeng
, Wei Li^*
, Jian lin Shi
, Xian lin Dong
, Jing kun Guo

^*Corresponding author for this work

CAS - Shanghai Institute of Ceramics
Ministry of Education of the People's Republic of China
University of Chinese Academy of Sciences

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

15 Scopus citations

Abstract

The effects of B₂O₃ addition, as a sintering agent, on the sintering behavior, microstructure and microwave dielectric properties of the 11Li₂O-3Nb₂O₅-12TiO₂ (LNT) ceramics have been investigated. With the low-level doping of B₂O₃ (≤2 wt.%), the sintering temperature of the LNT ceramic could be effectively reduced to 900 °C. The B₂O₃-doped LNT ceramics are also composed of Li₂TiO₃ss and "M-phase" phases. No other phase could be observed in the 0.5-2 wt.% B₂O₃-doped ceramics sintered at 840-920 °C. The addition of B₂O₃ induced no obvious degradation in the microwave dielectric properties but increased the τ_f values. Typically, the 0.5 wt.% B₂O₃-doped ceramics sintered at 900 °C have better microwave dielectric properties of ε_r = 49.2, Q × f = 8839 GHz, τ_f = 57.6 ppm/°C, which suggest that the ceramics could be applied in multilayer microwave devices requiring low sintering temperatures.

Original language	English
Pages (from-to)	411-417
Number of pages	7
Journal	Materials Research Bulletin
Volume	43
Issue number	2
DOIs	https://doi.org/10.1016/j.materresbull.2007.02.040
State	Published - 5 Feb 2008
Externally published	Yes

Keywords

A. Ceramics
B. Dielectric properties
C. X-ray diffraction
D. Microstructure

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10.1016/j.materresbull.2007.02.040

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@article{cc0a6a2e152e4ae89229a3cc0cca6754,

title = "Microwave dielectric properties and microstructures of the 11Li2O-3Nb2O5-12TiO2 ceramics with B2O3 addition",

abstract = "The effects of B2O3 addition, as a sintering agent, on the sintering behavior, microstructure and microwave dielectric properties of the 11Li2O-3Nb2O5-12TiO2 (LNT) ceramics have been investigated. With the low-level doping of B2O3 (≤2 wt.\%), the sintering temperature of the LNT ceramic could be effectively reduced to 900 °C. The B2O3-doped LNT ceramics are also composed of Li2TiO3ss and {"}M-phase{"} phases. No other phase could be observed in the 0.5-2 wt.\% B2O3-doped ceramics sintered at 840-920 °C. The addition of B2O3 induced no obvious degradation in the microwave dielectric properties but increased the τf values. Typically, the 0.5 wt.\% B2O3-doped ceramics sintered at 900 °C have better microwave dielectric properties of εr = 49.2, Q × f = 8839 GHz, τf = 57.6 ppm/°C, which suggest that the ceramics could be applied in multilayer microwave devices requiring low sintering temperatures.",

keywords = "A. Ceramics, B. Dielectric properties, C. X-ray diffraction, D. Microstructure",

author = "Qun Zeng and Wei Li and Shi, \{Jian lin\} and Dong, \{Xian lin\} and Guo, \{Jing kun\}",

year = "2008",

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doi = "10.1016/j.materresbull.2007.02.040",

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TY - JOUR

T1 - Microwave dielectric properties and microstructures of the 11Li2O-3Nb2O5-12TiO2 ceramics with B2O3 addition

AU - Zeng, Qun

AU - Li, Wei

AU - Shi, Jian lin

AU - Dong, Xian lin

AU - Guo, Jing kun

PY - 2008/2/5

Y1 - 2008/2/5

N2 - The effects of B2O3 addition, as a sintering agent, on the sintering behavior, microstructure and microwave dielectric properties of the 11Li2O-3Nb2O5-12TiO2 (LNT) ceramics have been investigated. With the low-level doping of B2O3 (≤2 wt.%), the sintering temperature of the LNT ceramic could be effectively reduced to 900 °C. The B2O3-doped LNT ceramics are also composed of Li2TiO3ss and "M-phase" phases. No other phase could be observed in the 0.5-2 wt.% B2O3-doped ceramics sintered at 840-920 °C. The addition of B2O3 induced no obvious degradation in the microwave dielectric properties but increased the τf values. Typically, the 0.5 wt.% B2O3-doped ceramics sintered at 900 °C have better microwave dielectric properties of εr = 49.2, Q × f = 8839 GHz, τf = 57.6 ppm/°C, which suggest that the ceramics could be applied in multilayer microwave devices requiring low sintering temperatures.

AB - The effects of B2O3 addition, as a sintering agent, on the sintering behavior, microstructure and microwave dielectric properties of the 11Li2O-3Nb2O5-12TiO2 (LNT) ceramics have been investigated. With the low-level doping of B2O3 (≤2 wt.%), the sintering temperature of the LNT ceramic could be effectively reduced to 900 °C. The B2O3-doped LNT ceramics are also composed of Li2TiO3ss and "M-phase" phases. No other phase could be observed in the 0.5-2 wt.% B2O3-doped ceramics sintered at 840-920 °C. The addition of B2O3 induced no obvious degradation in the microwave dielectric properties but increased the τf values. Typically, the 0.5 wt.% B2O3-doped ceramics sintered at 900 °C have better microwave dielectric properties of εr = 49.2, Q × f = 8839 GHz, τf = 57.6 ppm/°C, which suggest that the ceramics could be applied in multilayer microwave devices requiring low sintering temperatures.

KW - A. Ceramics

KW - B. Dielectric properties

KW - C. X-ray diffraction

KW - D. Microstructure

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U2 - 10.1016/j.materresbull.2007.02.040

DO - 10.1016/j.materresbull.2007.02.040

M3 - 文章

AN - SCOPUS:37349085099

SN - 0025-5408

VL - 43

SP - 411

EP - 417

JO - Materials Research Bulletin

JF - Materials Research Bulletin

IS - 2

ER -

Microwave dielectric properties and microstructures of the 11Li₂O-3Nb₂O₅-12TiO₂ ceramics with B₂O₃ addition

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Keywords

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