Microstructure and Microwave Dielectric Properties of (1-x)Ba(Co 1/3Nb2/3)O3-xBa(Zn1/3Nb 2/3)O3 Ceramics

Cheol Woo Ahn; Sahn Nahm; Seok Jin Yoon; Hyun Min Park; Hwack Joo Lee

doi:10.1143/jjap.42.6964

Microstructure and Microwave Dielectric Properties of (1-x)Ba(Co _1/3Nb_2/3)O₃-xBa(Zn_1/3Nb _2/3)O₃ Ceramics

Cheol Woo Ahn, 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

16 Citations (Scopus)

Abstract

The microstructure and microwave dielectric properties of (1-x)Ba(Co _1/3Nb_2/3)O₃-xBa(Zn_1/3Nb _2/3)O₃ [(1-x)BCN-xBZN] ceramics with 0.0 ≤ x ≤ 1.0 were investigated. When the sintering temperature was 1400°C, a homogeneous phase with a 1 : 2 ordered structure was found in the specimens with x ≤ 0.3 but for the specimens with x ≥ 0.6, a disordered structure and BaNb ₆O₁₆ second phase were found. The grain growth related to the BaNb₆O₁₆ second phase occurred in the specimens with x ≥ 0.5. The temperature coefficient of the resonant frequency (τ _f) increased with increasing x, and the specimens with 0.3 ≤ x ≤ 0.4 have zero τ_j. Dielectric constant (ε_r increased with the increase in x and was about 34.5 when x = 0.3. For the specimens with x ≤ 0.3, the Q × f value was high but decreased as x exceeded 0.3. The maximum Q × f value, 97,000 GHz, was obtained for 0.7BCN-0.3BZN ceramics sintered at 1400°C for 20 h.

Original language	English
Pages (from-to)	6964-6968
Number of pages	5
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	42
Issue number	11
DOIs	https://doi.org/10.1143/jjap.42.6964
Publication status	Published - 2003 Nov

Keywords

Ba(Co Nb)O
Ba(ZnNb)O
Microstructure
Microwave dielectric properties

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/jjap.42.6964

Cite this

@article{411da2b7d5854f6ab30d54fcb72ad5de,

title = "Microstructure and Microwave Dielectric Properties of (1-x)Ba(Co 1/3Nb2/3)O3-xBa(Zn1/3Nb 2/3)O3 Ceramics",

abstract = "The microstructure and microwave dielectric properties of (1-x)Ba(Co 1/3Nb2/3)O3-xBa(Zn1/3Nb 2/3)O3 [(1-x)BCN-xBZN] ceramics with 0.0 ≤ x ≤ 1.0 were investigated. When the sintering temperature was 1400°C, a homogeneous phase with a 1 : 2 ordered structure was found in the specimens with x ≤ 0.3 but for the specimens with x ≥ 0.6, a disordered structure and BaNb 6O16 second phase were found. The grain growth related to the BaNb6O16 second phase occurred in the specimens with x ≥ 0.5. The temperature coefficient of the resonant frequency (τ f) increased with increasing x, and the specimens with 0.3 ≤ x ≤ 0.4 have zero τj. Dielectric constant (εr increased with the increase in x and was about 34.5 when x = 0.3. For the specimens with x ≤ 0.3, the Q × f value was high but decreased as x exceeded 0.3. The maximum Q × f value, 97,000 GHz, was obtained for 0.7BCN-0.3BZN ceramics sintered at 1400°C for 20 h.",

keywords = "Ba(Co Nb)O, Ba(ZnNb)O, Microstructure, Microwave dielectric properties",

author = "Ahn, {Cheol Woo} and Sahn Nahm and Yoon, {Seok Jin} and Park, {Hyun Min} and Lee, {Hwack Joo}",

year = "2003",

month = nov,

doi = "10.1143/jjap.42.6964",

language = "English",

volume = "42",

pages = "6964--6968",

journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",

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publisher = "Japan Society of Applied Physics",

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T1 - Microstructure and Microwave Dielectric Properties of (1-x)Ba(Co 1/3Nb2/3)O3-xBa(Zn1/3Nb 2/3)O3 Ceramics

AU - Ahn, Cheol Woo

AU - Nahm, Sahn

AU - Yoon, Seok Jin

AU - Park, Hyun Min

AU - Lee, Hwack Joo

PY - 2003/11

Y1 - 2003/11

N2 - The microstructure and microwave dielectric properties of (1-x)Ba(Co 1/3Nb2/3)O3-xBa(Zn1/3Nb 2/3)O3 [(1-x)BCN-xBZN] ceramics with 0.0 ≤ x ≤ 1.0 were investigated. When the sintering temperature was 1400°C, a homogeneous phase with a 1 : 2 ordered structure was found in the specimens with x ≤ 0.3 but for the specimens with x ≥ 0.6, a disordered structure and BaNb 6O16 second phase were found. The grain growth related to the BaNb6O16 second phase occurred in the specimens with x ≥ 0.5. The temperature coefficient of the resonant frequency (τ f) increased with increasing x, and the specimens with 0.3 ≤ x ≤ 0.4 have zero τj. Dielectric constant (εr increased with the increase in x and was about 34.5 when x = 0.3. For the specimens with x ≤ 0.3, the Q × f value was high but decreased as x exceeded 0.3. The maximum Q × f value, 97,000 GHz, was obtained for 0.7BCN-0.3BZN ceramics sintered at 1400°C for 20 h.

AB - The microstructure and microwave dielectric properties of (1-x)Ba(Co 1/3Nb2/3)O3-xBa(Zn1/3Nb 2/3)O3 [(1-x)BCN-xBZN] ceramics with 0.0 ≤ x ≤ 1.0 were investigated. When the sintering temperature was 1400°C, a homogeneous phase with a 1 : 2 ordered structure was found in the specimens with x ≤ 0.3 but for the specimens with x ≥ 0.6, a disordered structure and BaNb 6O16 second phase were found. The grain growth related to the BaNb6O16 second phase occurred in the specimens with x ≥ 0.5. The temperature coefficient of the resonant frequency (τ f) increased with increasing x, and the specimens with 0.3 ≤ x ≤ 0.4 have zero τj. Dielectric constant (εr increased with the increase in x and was about 34.5 when x = 0.3. For the specimens with x ≤ 0.3, the Q × f value was high but decreased as x exceeded 0.3. The maximum Q × f value, 97,000 GHz, was obtained for 0.7BCN-0.3BZN ceramics sintered at 1400°C for 20 h.

KW - Ba(Co Nb)O

KW - Ba(ZnNb)O

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KW - Microwave dielectric properties

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