Structural Variation and Microwave Dielectric Properties of ZrO2 Added Ba(Zn1/3Ta2/3)O3 Ceramics

Jung In Yang, Sahn Nahm, Seok Jin Yoon, Hyun Min Park, Hwack Joo Lee

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Ba(Zn1/3Ta2/3)O3 (BZT) ceramic has 1: 2 ordered hexagonal structure, but was destroyed with the addition of ZrO 2. The 1: 1 ordered cubic structure was developed when a large amount of ZrO2 was added. BZT has a porous and inhomogeneous microstructure with a Ba5Ta4O15; second phase. When ZrO 2 was added, a new Ba0.5TaO3 second phase formed and grain growth occurred. Presence of liquid phase which is related to the Ba0.5TaO3 second phase could be responsible for the grain growth. Q value of BZT was greatly enhanced with the addition of ZrO 2. The improvement of Q value can be explained by the increase of relative density and grain size. Especially, grain size is considered to be one of the crucial factors for the improvement of Q value of BZT ceramic.

Original languageEnglish
Pages (from-to)211-214
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume43
Issue number1
Publication statusPublished - 2004 Jan 1

Keywords

  • 1:2 ordering
  • Ba(ZnTa)O
  • Liquid phase
  • Q value
  • ZrO

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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