Influence of Copper(II) Oxide Additions to Zinc Niobate Microwave Ceramics on Sintering Temperature and Dielectric Properties

Dong Wan Kim; Kyung Hyun Ko; Kug Sun Hong

doi:10.1111/j.1151-2916.2001.tb00830.x

Influence of Copper(II) Oxide Additions to Zinc Niobate Microwave Ceramics on Sintering Temperature and Dielectric Properties

Dong Wan Kim^*
, Kyung Hyun Ko
, Kug Sun Hong

^*Corresponding author for this work

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

131 Citations (Scopus)

Abstract

The effect of CuO additions on the firing temperature of ZnNb₂O₆ ceramics was investigated using dilatometry, transmission electron microscopy, and X-ray diffractometry. A 5 wt% CuO addition to ZnNb₂O₆ ceramics significantly lowered the firing temperature from 1150° to ∼900°C. The presence of a CuO-rich intergranular phase in the specimen was observed and was evidence of the formation of a liquid phase during sintering. The composition of the liquid phase was (ZnCu₂)Nb₂O₈. In particular, the low-fired ZnNb₂O₆ ceramics had good microwave dielectric characteristics - Q × f = 59 500, ε_r = 22.1, τ_r = -66 ppm/°C. These properties were correlated with the formation of a second phase, (ZnCu₂)Nb₂O₈.

Original language	English
Pages (from-to)	1286-1290
Number of pages	5
Journal	Journal of the American Ceramic Society
Volume	84
Issue number	6
DOIs	https://doi.org/10.1111/j.1151-2916.2001.tb00830.x
Publication status	Published - 2001 Jun
Externally published	Yes

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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10.1111/j.1151-2916.2001.tb00830.x

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title = "Influence of Copper(II) Oxide Additions to Zinc Niobate Microwave Ceramics on Sintering Temperature and Dielectric Properties",

abstract = "The effect of CuO additions on the firing temperature of ZnNb2O6 ceramics was investigated using dilatometry, transmission electron microscopy, and X-ray diffractometry. A 5 wt\% CuO addition to ZnNb2O6 ceramics significantly lowered the firing temperature from 1150° to ∼900°C. The presence of a CuO-rich intergranular phase in the specimen was observed and was evidence of the formation of a liquid phase during sintering. The composition of the liquid phase was (ZnCu2)Nb2O8. In particular, the low-fired ZnNb2O6 ceramics had good microwave dielectric characteristics - Q × f = 59 500, εr = 22.1, τr = -66 ppm/°C. These properties were correlated with the formation of a second phase, (ZnCu2)Nb2O8.",

author = "Kim, \{Dong Wan\} and Ko, \{Kyung Hyun\} and Hong, \{Kug Sun\}",

year = "2001",

month = jun,

doi = "10.1111/j.1151-2916.2001.tb00830.x",

language = "English",

volume = "84",

pages = "1286--1290",

journal = "Journal of the American Ceramic Society",

issn = "0002-7820",

publisher = "Wiley-Blackwell",

number = "6",

}

TY - JOUR

T1 - Influence of Copper(II) Oxide Additions to Zinc Niobate Microwave Ceramics on Sintering Temperature and Dielectric Properties

AU - Kim, Dong Wan

AU - Ko, Kyung Hyun

AU - Hong, Kug Sun

PY - 2001/6

Y1 - 2001/6

N2 - The effect of CuO additions on the firing temperature of ZnNb2O6 ceramics was investigated using dilatometry, transmission electron microscopy, and X-ray diffractometry. A 5 wt% CuO addition to ZnNb2O6 ceramics significantly lowered the firing temperature from 1150° to ∼900°C. The presence of a CuO-rich intergranular phase in the specimen was observed and was evidence of the formation of a liquid phase during sintering. The composition of the liquid phase was (ZnCu2)Nb2O8. In particular, the low-fired ZnNb2O6 ceramics had good microwave dielectric characteristics - Q × f = 59 500, εr = 22.1, τr = -66 ppm/°C. These properties were correlated with the formation of a second phase, (ZnCu2)Nb2O8.

AB - The effect of CuO additions on the firing temperature of ZnNb2O6 ceramics was investigated using dilatometry, transmission electron microscopy, and X-ray diffractometry. A 5 wt% CuO addition to ZnNb2O6 ceramics significantly lowered the firing temperature from 1150° to ∼900°C. The presence of a CuO-rich intergranular phase in the specimen was observed and was evidence of the formation of a liquid phase during sintering. The composition of the liquid phase was (ZnCu2)Nb2O8. In particular, the low-fired ZnNb2O6 ceramics had good microwave dielectric characteristics - Q × f = 59 500, εr = 22.1, τr = -66 ppm/°C. These properties were correlated with the formation of a second phase, (ZnCu2)Nb2O8.

UR - https://www.scopus.com/pages/publications/0001660108

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DO - 10.1111/j.1151-2916.2001.tb00830.x

M3 - Article

AN - SCOPUS:0001660108

SN - 0002-7820

VL - 84

SP - 1286

EP - 1290

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 6

ER -

Influence of Copper(II) Oxide Additions to Zinc Niobate Microwave Ceramics on Sintering Temperature and Dielectric Properties

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