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Browse Journals & Magazines > Applied Physics Letters ...> Volume:91 Issue:20 Help

An approach to further improve piezoelectric properties of (K0.5Na0.5)NbO3-based lead-free ceramics

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6 Author(s)
Du, Hongliang ; State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China ; Zhou, Wancheng ; Luo, Fa ; Zhu, Dongmei
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Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.2815750 

An approach to further improve piezoelectric properties of (1-x)(K0.5Na0.5)NbO3–xLiNbO3 (KNLN) ceramics, i.e., the optimum poling temperatures (Tp) of KNLN ceramics should be chosen near the polymorphic phase transition temperatures, is proposed. This is contrary to conventional wisdom associated with electrical poling of ceramics. Piezoelectric constant d33 of KNLN (x=0.07) ceramics increases from 210 to 274 pC/N by selecting optimum Tp. This result indicates that this approach is very effective in improving piezoelectric properties of KNLN ceramics. Moreover, this approach can also be applied to other (K0.5Na0.5)NbO3 based ceramics.

Published in:
Applied Physics Letters  (Volume:91 ,  Issue: 20 )

Date of Publication: Nov 2007

Page(s):
202907 - 202907-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.2815750
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
Nov 2007

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