Glass-free LTCC microwave dielectric ceramics

Jian Jiang Bian, Dong-Wan Kim, Kug Sun Hong

Research output: Contribution to journalArticle

73 Citations (Scopus)

Abstract

The sintering behavior, microstructure and microwave dielectric properties of complex pyrophosphate compounds AMP2O7 (A = Ca, Sr; M = Zn, Cu) were investigated in this paper. All compounds could be densified below the temperature of 950 °C without any glass addition, and exhibit low permittivity (εr < 8), high Q × f value and negative temperature coefficient of resonant frequency. The Q × f value was discussed from the point of view of bond strength. The chemical compatibility with silver and copper was also investigated. All compounds seriously react with silver at ∼700 °C. However SrZnP2O7 could be co-fired with copper in reduced atmosphere. The microwave dielectric properties of SrZnP2O7 sintered at 950 °C in reducing atmosphere are: εr = 7.06, Q × f = 52781 GHz, τf = -70 ppm/°C. In terms of its lower sintering temperature, chemical compatibility with copper and good microwave dielectric properties, SrZnP2O 7 ceramic is very promising for low temperature co-fired ceramic (LTCC) applications.

Original languageEnglish
Pages (from-to)2120-2129
Number of pages10
JournalMaterials Research Bulletin
Volume40
Issue number12
DOIs
Publication statusPublished - 2005 Dec 8
Externally publishedYes

Fingerprint

chemical compatibility
Dielectric properties
dielectric properties
Copper
Microwaves
ceramics
Silver
microwaves
Glass
copper
glass
sintering
Sintering
silver
Negative temperature coefficient
atmospheres
complex compounds
Temperature
temperature
resonant frequencies

Keywords

  • A. Ceramics
  • D. Dielectric properties

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Glass-free LTCC microwave dielectric ceramics. / Bian, Jian Jiang; Kim, Dong-Wan; Hong, Kug Sun.

In: Materials Research Bulletin, Vol. 40, No. 12, 08.12.2005, p. 2120-2129.

Research output: Contribution to journalArticle

Bian, Jian Jiang ; Kim, Dong-Wan ; Hong, Kug Sun. / Glass-free LTCC microwave dielectric ceramics. In: Materials Research Bulletin. 2005 ; Vol. 40, No. 12. pp. 2120-2129.
@article{14f512e900f84ee1856ef1e2fd619f8a,
title = "Glass-free LTCC microwave dielectric ceramics",
abstract = "The sintering behavior, microstructure and microwave dielectric properties of complex pyrophosphate compounds AMP2O7 (A = Ca, Sr; M = Zn, Cu) were investigated in this paper. All compounds could be densified below the temperature of 950 °C without any glass addition, and exhibit low permittivity (εr < 8), high Q × f value and negative temperature coefficient of resonant frequency. The Q × f value was discussed from the point of view of bond strength. The chemical compatibility with silver and copper was also investigated. All compounds seriously react with silver at ∼700 °C. However SrZnP2O7 could be co-fired with copper in reduced atmosphere. The microwave dielectric properties of SrZnP2O7 sintered at 950 °C in reducing atmosphere are: εr = 7.06, Q × f = 52781 GHz, τf = -70 ppm/°C. In terms of its lower sintering temperature, chemical compatibility with copper and good microwave dielectric properties, SrZnP2O 7 ceramic is very promising for low temperature co-fired ceramic (LTCC) applications.",
keywords = "A. Ceramics, D. Dielectric properties",
author = "Bian, {Jian Jiang} and Dong-Wan Kim and Hong, {Kug Sun}",
year = "2005",
month = "12",
day = "8",
doi = "10.1016/j.materresbull.2005.07.003",
language = "English",
volume = "40",
pages = "2120--2129",
journal = "Materials Research Bulletin",
issn = "0025-5408",
publisher = "Elsevier Limited",
number = "12",

}

TY - JOUR

T1 - Glass-free LTCC microwave dielectric ceramics

AU - Bian, Jian Jiang

AU - Kim, Dong-Wan

AU - Hong, Kug Sun

PY - 2005/12/8

Y1 - 2005/12/8

N2 - The sintering behavior, microstructure and microwave dielectric properties of complex pyrophosphate compounds AMP2O7 (A = Ca, Sr; M = Zn, Cu) were investigated in this paper. All compounds could be densified below the temperature of 950 °C without any glass addition, and exhibit low permittivity (εr < 8), high Q × f value and negative temperature coefficient of resonant frequency. The Q × f value was discussed from the point of view of bond strength. The chemical compatibility with silver and copper was also investigated. All compounds seriously react with silver at ∼700 °C. However SrZnP2O7 could be co-fired with copper in reduced atmosphere. The microwave dielectric properties of SrZnP2O7 sintered at 950 °C in reducing atmosphere are: εr = 7.06, Q × f = 52781 GHz, τf = -70 ppm/°C. In terms of its lower sintering temperature, chemical compatibility with copper and good microwave dielectric properties, SrZnP2O 7 ceramic is very promising for low temperature co-fired ceramic (LTCC) applications.

AB - The sintering behavior, microstructure and microwave dielectric properties of complex pyrophosphate compounds AMP2O7 (A = Ca, Sr; M = Zn, Cu) were investigated in this paper. All compounds could be densified below the temperature of 950 °C without any glass addition, and exhibit low permittivity (εr < 8), high Q × f value and negative temperature coefficient of resonant frequency. The Q × f value was discussed from the point of view of bond strength. The chemical compatibility with silver and copper was also investigated. All compounds seriously react with silver at ∼700 °C. However SrZnP2O7 could be co-fired with copper in reduced atmosphere. The microwave dielectric properties of SrZnP2O7 sintered at 950 °C in reducing atmosphere are: εr = 7.06, Q × f = 52781 GHz, τf = -70 ppm/°C. In terms of its lower sintering temperature, chemical compatibility with copper and good microwave dielectric properties, SrZnP2O 7 ceramic is very promising for low temperature co-fired ceramic (LTCC) applications.

KW - A. Ceramics

KW - D. Dielectric properties

UR - http://www.scopus.com/inward/record.url?scp=27644443117&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=27644443117&partnerID=8YFLogxK

U2 - 10.1016/j.materresbull.2005.07.003

DO - 10.1016/j.materresbull.2005.07.003

M3 - Article

AN - SCOPUS:27644443117

VL - 40

SP - 2120

EP - 2129

JO - Materials Research Bulletin

JF - Materials Research Bulletin

SN - 0025-5408

IS - 12

ER -