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

doi:10.1143/JJAP.43.211

Structural Variation and Microwave Dielectric Properties of ZrO₂ Added Ba(Zn_1/3Ta_2/3)O₃ Ceramics

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Ba(Zn_1/3Ta_2/3)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 Ba_0.5TaO₃ second phase formed and grain growth occurred. Presence of liquid phase which is related to the Ba_0.5TaO₃ 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 language	English
Pages (from-to)	211-214
Number of pages	4
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	43
Issue number	1
DOIs	https://doi.org/10.1143/JJAP.43.211
Publication status	Published - 2004 Jan

Keywords

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

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.43.211

Cite this

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

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.",

keywords = "1:2 ordering, Ba(ZnTa)O, Liquid phase, Q value, ZrO",

author = "Yang, {Jung In} and Sahn Nahm and Yoon, {Seok Jin} and Park, {Hyun Min} and Lee, {Hwack Joo}",

year = "2004",

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AU - Yang, Jung In

AU - Nahm, Sahn

AU - Yoon, Seok Jin

AU - Park, Hyun Min

AU - Lee, Hwack Joo

PY - 2004/1

Y1 - 2004/1

N2 - 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.

AB - 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.

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