Abstract
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 language | English |
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Pages (from-to) | 257-260 |
Number of pages | 4 |
Journal | Materials Letters |
Volume | 59 |
Issue number | 2-3 |
DOIs | |
Publication status | Published - 2005 Feb |
Externally published | Yes |
Bibliographical note
Copyright:Copyright 2008 Elsevier B.V., All rights reserved.
Keywords
- Microwave dielectric properties
- Mixed pyrophosphates
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering