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Ferroelectric properties of Pb(Zn <inf>1/3</inf>Nb <inf>2/3</inf>)O <inf>3</inf>-PbTiO <inf>3</inf>-RNbO <inf>3</inf>(R=Na, K) ceramics

Park, JS and Lee, JK and Park, HM and Hong, KS (2007) Ferroelectric properties of Pb(Zn <inf>1/3</inf>Nb <inf>2/3</inf>)O <inf>3</inf>-PbTiO <inf>3</inf>-RNbO <inf>3</inf>(R=Na, K) ceramics. Journal of the American Ceramic Society, 90 (11). 3512 - 3516. ISSN 0002-7820

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Abstract

We investigate the ferroelectric properties of Pb(Zn 1/3Nb 2/3)O 3-PbTiO 3(PZN-PT)-based ceramics, which are stabilized by adding a small amount of NaNbO 3 (NN) and KNbO 3 (KN). As the content of alkali niobate increased, the ferroelectric properties of Pb(Zn 1/3Nb 2/3)O 3-PbTiO 3-RNbO 3 (PZN-PT-RN; R=Na, K) became softer, which was more pronounced in PZN-PT-KN. The difference in the piezoelectric properties between PZN-PT-KN and PZN-PT-NN was explained by the cation size effect. Because the ionic size of Na is smaller than that of K, the Na ion can retain the ferroelectricity of the solid solution more effectively. The field-induced strain of 85PZN-5PT-10NN under 10 kV/cm was as high as 0.1%. Also, the addition of NN increased the tunability of dielectric constant significantly. At a composition of 85PZN-5PT-20NN, the tunability was 90% and no hysteresis was observed. In contrast to RN, the increase in the content of PT caused the transition from relaxor to normal ferroelectrics, which were accompanied by the structural change from the rhombohedral to tetragonal phase. © 2007 The American Ceramic Society.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Park, JS
Lee, JKjul37@pitt.eduJUL370000-0002-7778-7679
Park, HM
Hong, KS
Centers: Other Centers, Institutes, or Units > Petersen Institute of NanoScience and Engineering
Date: 1 November 2007
Date Type: Publication
Journal or Publication Title: Journal of the American Ceramic Society
Volume: 90
Number: 11
Page Range: 3512 - 3516
DOI or Unique Handle: 10.1111/j.1551-2916.2007.01917.x
Schools and Programs: Swanson School of Engineering > Mechanical Engineering and Materials Science
Refereed: Yes
ISSN: 0002-7820
Date Deposited: 07 Nov 2014 16:59
Last Modified: 05 Feb 2019 19:55
URI: http://d-scholarship.pitt.edu/id/eprint/23467

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