(K,Na)NbO3-based ceramics for piezoelectric "hard" lead-free materials

Jong Bong Lim, Shujun Zhang, Jae Ho Jeon, Thomas R. Shrout

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

Lead-free piezoelectric ceramics (K0.45Na0.55) NbO3 (KNN) modified by K4CuNb8O23 (KCN) were synthesized using conventional ceramic processing. All the ceramics possessed the perovskite structure with orthorhombic symmetry. Results revealed that the addition of KCN was effective in enhancing the density of KNN. The addition of KCN was found to slightly decrease To-t and T c. The coercive field (Ec) was found to maintain the same value by the addition of KCN while the internal bias (Ei) sharply increased to 4 kV/cm with 0.5 mol% KCN. The low migration rate of defect dipoles was correlated with the build-up of Ei, which was responsible for the stabilization of the domain wall and the improvement of Qm. Therefore, KNN-KCN0.5 exhibited excellent piezoelectric properties of d 33 (100 pC/N), kp (33%), and Qm (1500), making them promising candidates for applications requiring hard piezoelectrics.

Original languageEnglish (US)
Pages (from-to)1218-1220
Number of pages3
JournalJournal of the American Ceramic Society
Volume93
Issue number5
DOIs
StatePublished - May 1 2010

Fingerprint

Piezoelectric ceramics
Domain walls
Perovskite
Stabilization
Lead
Defects
Processing
perovskite

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Lim, Jong Bong ; Zhang, Shujun ; Jeon, Jae Ho ; Shrout, Thomas R. / (K,Na)NbO3-based ceramics for piezoelectric "hard" lead-free materials. In: Journal of the American Ceramic Society. 2010 ; Vol. 93, No. 5. pp. 1218-1220.
@article{a120dd3887174582aef674eb50242251,
title = "(K,Na)NbO3-based ceramics for piezoelectric {"}hard{"} lead-free materials",
abstract = "Lead-free piezoelectric ceramics (K0.45Na0.55) NbO3 (KNN) modified by K4CuNb8O23 (KCN) were synthesized using conventional ceramic processing. All the ceramics possessed the perovskite structure with orthorhombic symmetry. Results revealed that the addition of KCN was effective in enhancing the density of KNN. The addition of KCN was found to slightly decrease To-t and T c. The coercive field (Ec) was found to maintain the same value by the addition of KCN while the internal bias (Ei) sharply increased to 4 kV/cm with 0.5 mol{\%} KCN. The low migration rate of defect dipoles was correlated with the build-up of Ei, which was responsible for the stabilization of the domain wall and the improvement of Qm. Therefore, KNN-KCN0.5 exhibited excellent piezoelectric properties of d 33 (100 pC/N), kp (33{\%}), and Qm (1500), making them promising candidates for applications requiring hard piezoelectrics.",
author = "Lim, {Jong Bong} and Shujun Zhang and Jeon, {Jae Ho} and Shrout, {Thomas R.}",
year = "2010",
month = "5",
day = "1",
doi = "10.1111/j.1551-2916.2009.03528.x",
language = "English (US)",
volume = "93",
pages = "1218--1220",
journal = "Journal of the American Ceramic Society",
issn = "0002-7820",
publisher = "Wiley-Blackwell",
number = "5",

}

(K,Na)NbO3-based ceramics for piezoelectric "hard" lead-free materials. / Lim, Jong Bong; Zhang, Shujun; Jeon, Jae Ho; Shrout, Thomas R.

In: Journal of the American Ceramic Society, Vol. 93, No. 5, 01.05.2010, p. 1218-1220.

Research output: Contribution to journalArticle

TY - JOUR

T1 - (K,Na)NbO3-based ceramics for piezoelectric "hard" lead-free materials

AU - Lim, Jong Bong

AU - Zhang, Shujun

AU - Jeon, Jae Ho

AU - Shrout, Thomas R.

PY - 2010/5/1

Y1 - 2010/5/1

N2 - Lead-free piezoelectric ceramics (K0.45Na0.55) NbO3 (KNN) modified by K4CuNb8O23 (KCN) were synthesized using conventional ceramic processing. All the ceramics possessed the perovskite structure with orthorhombic symmetry. Results revealed that the addition of KCN was effective in enhancing the density of KNN. The addition of KCN was found to slightly decrease To-t and T c. The coercive field (Ec) was found to maintain the same value by the addition of KCN while the internal bias (Ei) sharply increased to 4 kV/cm with 0.5 mol% KCN. The low migration rate of defect dipoles was correlated with the build-up of Ei, which was responsible for the stabilization of the domain wall and the improvement of Qm. Therefore, KNN-KCN0.5 exhibited excellent piezoelectric properties of d 33 (100 pC/N), kp (33%), and Qm (1500), making them promising candidates for applications requiring hard piezoelectrics.

AB - Lead-free piezoelectric ceramics (K0.45Na0.55) NbO3 (KNN) modified by K4CuNb8O23 (KCN) were synthesized using conventional ceramic processing. All the ceramics possessed the perovskite structure with orthorhombic symmetry. Results revealed that the addition of KCN was effective in enhancing the density of KNN. The addition of KCN was found to slightly decrease To-t and T c. The coercive field (Ec) was found to maintain the same value by the addition of KCN while the internal bias (Ei) sharply increased to 4 kV/cm with 0.5 mol% KCN. The low migration rate of defect dipoles was correlated with the build-up of Ei, which was responsible for the stabilization of the domain wall and the improvement of Qm. Therefore, KNN-KCN0.5 exhibited excellent piezoelectric properties of d 33 (100 pC/N), kp (33%), and Qm (1500), making them promising candidates for applications requiring hard piezoelectrics.

UR - http://www.scopus.com/inward/record.url?scp=77951670071&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77951670071&partnerID=8YFLogxK

U2 - 10.1111/j.1551-2916.2009.03528.x

DO - 10.1111/j.1551-2916.2009.03528.x

M3 - Article

VL - 93

SP - 1218

EP - 1220

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

SN - 0002-7820

IS - 5

ER -