Structural transition and microwave dielectric properties of ZnNb2O6-TiO2 sintered at low temperatures

Dong-Wan Kim, Hee Bum Hong, Kug Sun Hong

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The addition of CuO to ZnNb2O6-TiO2 significantly lowered the sintering temperature to ∼900°C in comparison to ∼1200°C for samples without CuO. The effect of CuO additions on the phase transitions and microwave dielectric properties of 0.42 ZnNb2O6 - 0.58 TiO2 has been investigated using X-ray powder diffraction and a network analyzer. The structural transition from columbite and rutile to ixiolite was influenced by both the sintering temperature as well as the amount of CuO. These influences, however, were competing. Therefore, it is assumed that the different constitutions of crystal structure of ZnNb2O6-TiO2 samples due to increase either the sintering temperature or the amount of CuO lead to considerable Variation in the microwave dielectric properties. The τf was modified to ∼0 ppm/°C, as a result of the variation in phase constitutions as a function of composition.

Original languageEnglish
Pages (from-to)1465-1469
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume41
Issue number3 A
Publication statusPublished - 2002 Mar 1
Externally publishedYes

Keywords

  • Low-firing
  • Microwave dielectric properties
  • Structural transition
  • TiO
  • ZnNbO
  • ZnTiNbO

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Structural transition and microwave dielectric properties of ZnNb<sub>2</sub>O<sub>6</sub>-TiO<sub>2</sub> sintered at low temperatures'. Together they form a unique fingerprint.

  • Cite this