Microwave dielectric properties of (1-x)Cu3Nb2O8-xZn3Nb2O 8 ceramics

Dong-Wan Kim, In Tae Kim, Byungwoo Park, Kug Sun Hong, Jong Hee Kim

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38 Citations (Scopus)

Abstract

The sintering behavior and microwave dielectric properties of (1-x)Cu3Nb2O8-xZn3Nb2O 8 have been investigated using dilatometry, x-ray diffraction, and a network analyzer. It was found that (1-x)Cu3Nb2O8-xZn3Nb2O 8 ceramics have a much lower melting temperature than Zn3Nb2O8 ceramics without Cu3Nb2O8 additives. Samples sintered at 900 °C for 2 h exhibited densities >97% of the theoretical density. Cu3Nb2O8 acts as a sintering aid. Two phase regions were identified with increasing Zn3Nb2O8 contents. A Cu3Nb2O8-Zn3Nb2O8 solid solution exists from 0 < x < 0.5 while a mixture of Cu3Nb2O8 and Zn3Nb2O8 exists from 0.5 < x < 1. The microwave dielectric properties correlated to the crystal structure. In Cu3Nb2O8-Zn3Nb2O8 solid solution region, the variation of dielectric properties could be explained by the structure distortion of Cu3Nb2O8 due to electronic anisotropies of Cu2+ cations.

Original languageEnglish
Pages (from-to)1465-1470
Number of pages6
JournalJournal of Materials Research
Volume16
Issue number5
Publication statusPublished - 2001 May 1
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)

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  • Cite this

    Kim, D-W., Kim, I. T., Park, B., Hong, K. S., & Kim, J. H. (2001). Microwave dielectric properties of (1-x)Cu3Nb2O8-xZn3Nb2O 8 ceramics. Journal of Materials Research, 16(5), 1465-1470.