Microwave dielectric properties of (Ca1-xZnx) 2P2O7

Jianjiang Bian, Dong Wan Kim, Kugsun Hong

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)


The phase evolution, sintering behavior and microwave dielectric properties of mixed pyrophosphates (Ca1-xZnx)2P 2O7 (x=0.1-0.9) were investigated in this paper. The results show that samples with x=0.1-0.4 exhibit mixture phases of CaZnP 2O7 and β-Ca2P2O7, and the samples with x=0.6-0.9 exhibit mixed phases of CaZnP2O 7 and Zn2P27. A single-phase composition of CaZnP2O7 could be formed when x=0.5. The mixed pyrophosphates (Ca1-xZnx)2P 2O7 (x=0.1-0.9) exhibit low sintering temperature (≤900°C), low relative permittivity (<9), high Q×f value and negative temperature coefficient of resonant frequency. Maximum Q×f value of 63,130 GHz could be obtained for CaZnP2O7 sintered at 900°C/2 h. Its dielectric constant and τf value are 7.56 and -82 ppm/°C, respectively.

Original languageEnglish
Pages (from-to)257-260
Number of pages4
JournalMaterials Letters
Issue number2-3
Publication statusPublished - 2005 Feb
Externally publishedYes

Bibliographical note

Copyright 2008 Elsevier B.V., All rights reserved.


  • Microwave dielectric properties
  • Mixed pyrophosphates

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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