Structural and piezoelectric properties of MnO2-added 0.95(Na0.5K0.5)NbO3-0.05SrTiO3 ceramics

In Tae Seo; Chang Hoi Choi; Min Soo Jang; Bo Yun Kim; Guifang Han; Sahn Nahm; Kyung Hoon Cho; Jong Hoo Paik

doi:10.1016/j.sna.2012.10.040

Structural and piezoelectric properties of MnO₂-added 0.95(Na_0.5K_0.5)NbO₃-0.05SrTiO₃ ceramics

In Tae Seo, Chang Hoi Choi, Min Soo Jang, Bo Yun Kim, Guifang Han, Sahn Nahm, Kyung Hoon Cho, Jong Hoo Paik

Department of Materials Science and Engineering

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

6 Citations (Scopus)

Abstract

The structural and piezoelectric properties of the xmol% MnO ₂-added 0.95(Na_0.5-x/200K_0.5-x/200)NbO ₃-0.05SrTiO₃ [(NK)xMN-ST] ceramics were investigated. A dense microstructure with enlarged grains was formed for the specimens sintered at 1040°C through liquid-phase sintering. However, the grain size decreased for the specimen sintered at 1060°C because of the formation of a large amount of the liquid phase. Therefore, the microstructural variations in the (NK)xMN-ST ceramics can be explained by liquid-phase-assisted abnormal grain growth. The specimens sintered at 1020 and 1060°C showed low piezoelectric properties because of their low relative density and small grain size, respectively. On the other hand, the (NK)xMN-ST ceramic with x = 0.1 sintered at 1040°C showed promising piezoelectric properties: d₃₃ =260pC/N, k_p = 0.42, Q_m = 202 and ε^T ₃₃/ε₀ = 1291.

Original language	English
Pages (from-to)	47-50
Number of pages	4
Journal	Sensors and Actuators, A: Physical
Volume	200
DOIs	https://doi.org/10.1016/j.sna.2012.10.040
Publication status	Published - 2013

Keywords

Lead free
Microstructure
NKN-ST
Piezoelectric

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering

Access to Document

10.1016/j.sna.2012.10.040

Cite this

@article{992e396de58345569a22aa33e7776ad9,

title = "Structural and piezoelectric properties of MnO2-added 0.95(Na0.5K0.5)NbO3-0.05SrTiO3 ceramics",

abstract = "The structural and piezoelectric properties of the xmol% MnO 2-added 0.95(Na0.5-x/200K0.5-x/200)NbO 3-0.05SrTiO3 [(NK)xMN-ST] ceramics were investigated. A dense microstructure with enlarged grains was formed for the specimens sintered at 1040°C through liquid-phase sintering. However, the grain size decreased for the specimen sintered at 1060°C because of the formation of a large amount of the liquid phase. Therefore, the microstructural variations in the (NK)xMN-ST ceramics can be explained by liquid-phase-assisted abnormal grain growth. The specimens sintered at 1020 and 1060°C showed low piezoelectric properties because of their low relative density and small grain size, respectively. On the other hand, the (NK)xMN-ST ceramic with x = 0.1 sintered at 1040°C showed promising piezoelectric properties: d33 =260pC/N, kp = 0.42, Qm = 202 and εT 33/ε0 = 1291.",

keywords = "Lead free, Microstructure, NKN-ST, Piezoelectric",

author = "Seo, {In Tae} and Choi, {Chang Hoi} and Jang, {Min Soo} and Kim, {Bo Yun} and Guifang Han and Sahn Nahm and Cho, {Kyung Hoon} and Paik, {Jong Hoo}",

year = "2013",

doi = "10.1016/j.sna.2012.10.040",

language = "English",

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pages = "47--50",

journal = "Sensors and Actuators, A: Physical",

issn = "0924-4247",

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TY - JOUR

T1 - Structural and piezoelectric properties of MnO2-added 0.95(Na0.5K0.5)NbO3-0.05SrTiO3 ceramics

AU - Seo, In Tae

AU - Choi, Chang Hoi

AU - Jang, Min Soo

AU - Kim, Bo Yun

AU - Han, Guifang

AU - Nahm, Sahn

AU - Cho, Kyung Hoon

AU - Paik, Jong Hoo

PY - 2013

Y1 - 2013

N2 - The structural and piezoelectric properties of the xmol% MnO 2-added 0.95(Na0.5-x/200K0.5-x/200)NbO 3-0.05SrTiO3 [(NK)xMN-ST] ceramics were investigated. A dense microstructure with enlarged grains was formed for the specimens sintered at 1040°C through liquid-phase sintering. However, the grain size decreased for the specimen sintered at 1060°C because of the formation of a large amount of the liquid phase. Therefore, the microstructural variations in the (NK)xMN-ST ceramics can be explained by liquid-phase-assisted abnormal grain growth. The specimens sintered at 1020 and 1060°C showed low piezoelectric properties because of their low relative density and small grain size, respectively. On the other hand, the (NK)xMN-ST ceramic with x = 0.1 sintered at 1040°C showed promising piezoelectric properties: d33 =260pC/N, kp = 0.42, Qm = 202 and εT 33/ε0 = 1291.

AB - The structural and piezoelectric properties of the xmol% MnO 2-added 0.95(Na0.5-x/200K0.5-x/200)NbO 3-0.05SrTiO3 [(NK)xMN-ST] ceramics were investigated. A dense microstructure with enlarged grains was formed for the specimens sintered at 1040°C through liquid-phase sintering. However, the grain size decreased for the specimen sintered at 1060°C because of the formation of a large amount of the liquid phase. Therefore, the microstructural variations in the (NK)xMN-ST ceramics can be explained by liquid-phase-assisted abnormal grain growth. The specimens sintered at 1020 and 1060°C showed low piezoelectric properties because of their low relative density and small grain size, respectively. On the other hand, the (NK)xMN-ST ceramic with x = 0.1 sintered at 1040°C showed promising piezoelectric properties: d33 =260pC/N, kp = 0.42, Qm = 202 and εT 33/ε0 = 1291.

KW - Lead free

KW - Microstructure

KW - NKN-ST

KW - Piezoelectric

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