Microstructure and microwave dielectric properties of SnO2-Added Ba(Zn1/3Ta2/3)O3 ceramics

Min Han Kim; Beom Jong Kim; Sahn Nahm; Woo Sung Lee; Myong Jae Yoo; Nam Kee Kang; Hwack Joo Lee; Young Sik Kim; Sun Youn Ryou

doi:10.1143/JJAP.43.4259

Microstructure and microwave dielectric properties of SnO₂-Added Ba(Zn_1/3Ta_2/3)O₃ ceramics

Min Han Kim, Beom Jong Kim, Sahn Nahm, Woo Sung Lee, Myong Jae Yoo, Nam Kee Kang, Hwack Joo Lee, Young Sik Kim, Sun Youn Ryou

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

12 Citations (Scopus)

Abstract

The Ba(Zn_1/3Ta_2/3)O₃ (BZT) ceramic normally has a 1 : 2-ordered hexagonal structure, but it changes to the 1 : 1-ordered cubic structure with the addition of SnO₂. When SnO ₂ was added to the BZT ceramics, grain growth occurred and the liquid phase formed. The liquid phase was responsible for the grain growth. The Q × f value of the BZT ceramic significantly increased with the addition of a small amount of SnO₂. Since the degree of 1 : 2 ordering and the relative density decreased with the addition of SnO₂, the enhancement of the Q value cannot be explained by the 1 : 2 ordering and the relative density. On the other hand, the improvement of the Q value could be related to the increase in the grain size because the average grain size increased with the addition of SnO₂. However, when a large amount of SnO₂ was added, the Q value was very low. The low Q value was explained by the low relative density and the presence of a large amount of Ba₃Ta ₅O₁₅ phase.

Original language	English
Pages (from-to)	4259-4262
Number of pages	4
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	43
Issue number	7 A
DOIs	https://doi.org/10.1143/JJAP.43.4259
Publication status	Published - 2004 Jul

Keywords

Ba(znta)o
Grain growth
Liquid phase
Q value
Sno

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.43.4259

Cite this

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title = "Microstructure and microwave dielectric properties of SnO2-Added Ba(Zn1/3Ta2/3)O3 ceramics",

abstract = "The Ba(Zn1/3Ta2/3)O3 (BZT) ceramic normally has a 1 : 2-ordered hexagonal structure, but it changes to the 1 : 1-ordered cubic structure with the addition of SnO2. When SnO 2 was added to the BZT ceramics, grain growth occurred and the liquid phase formed. The liquid phase was responsible for the grain growth. The Q × f value of the BZT ceramic significantly increased with the addition of a small amount of SnO2. Since the degree of 1 : 2 ordering and the relative density decreased with the addition of SnO2, the enhancement of the Q value cannot be explained by the 1 : 2 ordering and the relative density. On the other hand, the improvement of the Q value could be related to the increase in the grain size because the average grain size increased with the addition of SnO2. However, when a large amount of SnO2 was added, the Q value was very low. The low Q value was explained by the low relative density and the presence of a large amount of Ba3Ta 5O15 phase.",

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author = "Kim, {Min Han} and Kim, {Beom Jong} and Sahn Nahm and Lee, {Woo Sung} and Yoo, {Myong Jae} and Kang, {Nam Kee} and Lee, {Hwack Joo} and Kim, {Young Sik} and Ryou, {Sun Youn}",

year = "2004",

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AU - Kim, Min Han

AU - Kim, Beom Jong

AU - Nahm, Sahn

AU - Lee, Woo Sung

AU - Yoo, Myong Jae

AU - Kang, Nam Kee

AU - Lee, Hwack Joo

AU - Kim, Young Sik

AU - Ryou, Sun Youn

PY - 2004/7

Y1 - 2004/7

N2 - The Ba(Zn1/3Ta2/3)O3 (BZT) ceramic normally has a 1 : 2-ordered hexagonal structure, but it changes to the 1 : 1-ordered cubic structure with the addition of SnO2. When SnO 2 was added to the BZT ceramics, grain growth occurred and the liquid phase formed. The liquid phase was responsible for the grain growth. The Q × f value of the BZT ceramic significantly increased with the addition of a small amount of SnO2. Since the degree of 1 : 2 ordering and the relative density decreased with the addition of SnO2, the enhancement of the Q value cannot be explained by the 1 : 2 ordering and the relative density. On the other hand, the improvement of the Q value could be related to the increase in the grain size because the average grain size increased with the addition of SnO2. However, when a large amount of SnO2 was added, the Q value was very low. The low Q value was explained by the low relative density and the presence of a large amount of Ba3Ta 5O15 phase.

AB - The Ba(Zn1/3Ta2/3)O3 (BZT) ceramic normally has a 1 : 2-ordered hexagonal structure, but it changes to the 1 : 1-ordered cubic structure with the addition of SnO2. When SnO 2 was added to the BZT ceramics, grain growth occurred and the liquid phase formed. The liquid phase was responsible for the grain growth. The Q × f value of the BZT ceramic significantly increased with the addition of a small amount of SnO2. Since the degree of 1 : 2 ordering and the relative density decreased with the addition of SnO2, the enhancement of the Q value cannot be explained by the 1 : 2 ordering and the relative density. On the other hand, the improvement of the Q value could be related to the increase in the grain size because the average grain size increased with the addition of SnO2. However, when a large amount of SnO2 was added, the Q value was very low. The low Q value was explained by the low relative density and the presence of a large amount of Ba3Ta 5O15 phase.

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