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

^*Corresponding author for this work

Department of Materials Science and Engineering

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

7 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",

volume = "200",

pages = "47--50",

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

issn = "0924-4247",

publisher = "Elsevier B.V.",

}

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

UR - https://www.scopus.com/pages/publications/84885381464

U2 - 10.1016/j.sna.2012.10.040

DO - 10.1016/j.sna.2012.10.040

M3 - Article

AN - SCOPUS:84885381464

SN - 0924-4247

VL - 200

SP - 47

EP - 50

JO - Sensors and Actuators, A: Physical

JF - Sensors and Actuators, A: Physical

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