Li4WO5: A temperature stable low-firing microwave dielectric ceramic with rock salt structure

Jie Li; Liang Fang; Hao Luo; Jibran Khaliq; Ying Tang; Chunchun Li

doi:10.1016/j.jeurceramsoc.2015.09.033

Li4WO5: A temperature stable low-firing microwave dielectric ceramic with rock salt structure

Jie Li, Liang Fang, Hao Luo, Jibran Khaliq, Ying Tang, Chunchun Li

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

61 Citations (Scopus)

Abstract

A Li4WO5 ceramic with rock salt structure was prepared by the solid-state reaction method and its microwave dielectric properties was demonstrated for the first time. It could be well densified at relatively low sintering temperature (∼890 °C). XRD and DTA analysis revealed a phase transformation from cubic to orthorhombic occured at 700 °C. Excellent microwave dielectric properties with a near-zero temperature coefficient of resonant frequency ∼−2.6 ppm/°C, a relative permittivity ∼8.6 and a quality factor ∼23,100 GHz (at 11.0 GHz) was obtained. Li4WO5 was found to be chemically compatible with silver powders when sintered at 890 °C. All the results indicate that the Li4WO5 ceramic is a promising candidate as a base material in low temperature cofired ceramic technology.

Original language	English
Pages (from-to)	243-246
Journal	Journal of the European Ceramic Society
Volume	36
Issue number	1
Early online date	9 Oct 2015
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2015.09.033
Publication status	Published - 1 Jan 2016
Externally published	Yes

Keywords

Micorowave dielectric properties
LTCC
Rock salt
Li4WO5

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10.1016/j.jeurceramsoc.2015.09.033

Cite this

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title = "Li4WO5: A temperature stable low-firing microwave dielectric ceramic with rock salt structure",

abstract = "A Li4WO5 ceramic with rock salt structure was prepared by the solid-state reaction method and its microwave dielectric properties was demonstrated for the first time. It could be well densified at relatively low sintering temperature (∼890 °C). XRD and DTA analysis revealed a phase transformation from cubic to orthorhombic occured at 700 °C. Excellent microwave dielectric properties with a near-zero temperature coefficient of resonant frequency ∼−2.6 ppm/°C, a relative permittivity ∼8.6 and a quality factor ∼23,100 GHz (at 11.0 GHz) was obtained. Li4WO5 was found to be chemically compatible with silver powders when sintered at 890 °C. All the results indicate that the Li4WO5 ceramic is a promising candidate as a base material in low temperature cofired ceramic technology.",

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T1 - Li4WO5: A temperature stable low-firing microwave dielectric ceramic with rock salt structure

AU - Li, Jie

AU - Fang, Liang

AU - Luo, Hao

AU - Khaliq, Jibran

AU - Tang, Ying

AU - Li, Chunchun

PY - 2016/1/1

Y1 - 2016/1/1

N2 - A Li4WO5 ceramic with rock salt structure was prepared by the solid-state reaction method and its microwave dielectric properties was demonstrated for the first time. It could be well densified at relatively low sintering temperature (∼890 °C). XRD and DTA analysis revealed a phase transformation from cubic to orthorhombic occured at 700 °C. Excellent microwave dielectric properties with a near-zero temperature coefficient of resonant frequency ∼−2.6 ppm/°C, a relative permittivity ∼8.6 and a quality factor ∼23,100 GHz (at 11.0 GHz) was obtained. Li4WO5 was found to be chemically compatible with silver powders when sintered at 890 °C. All the results indicate that the Li4WO5 ceramic is a promising candidate as a base material in low temperature cofired ceramic technology.

AB - A Li4WO5 ceramic with rock salt structure was prepared by the solid-state reaction method and its microwave dielectric properties was demonstrated for the first time. It could be well densified at relatively low sintering temperature (∼890 °C). XRD and DTA analysis revealed a phase transformation from cubic to orthorhombic occured at 700 °C. Excellent microwave dielectric properties with a near-zero temperature coefficient of resonant frequency ∼−2.6 ppm/°C, a relative permittivity ∼8.6 and a quality factor ∼23,100 GHz (at 11.0 GHz) was obtained. Li4WO5 was found to be chemically compatible with silver powders when sintered at 890 °C. All the results indicate that the Li4WO5 ceramic is a promising candidate as a base material in low temperature cofired ceramic technology.

KW - Micorowave dielectric properties

KW - LTCC

KW - Rock salt

KW - Li4WO5

U2 - 10.1016/j.jeurceramsoc.2015.09.033

DO - 10.1016/j.jeurceramsoc.2015.09.033

M3 - Article

SN - 0955-2219

VL - 36

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EP - 246

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 1

ER -

Li4WO5: A temperature stable low-firing microwave dielectric ceramic with rock salt structure

Abstract

Keywords

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