BROWSE

Related Researcher

Author's Photo

Jo, Wook
Sustainable Functional Ceramics Lab
Research Interests
  • Lead-free piezoceramics, ultra - low temperature sintering, ferroelectrics, relaxor ferroelectrics, 2D materials, magnetoelectric materials, multiferroics

ITEM VIEW & DOWNLOAD

Large blocking force in Bi 1/2Na 1/2TiO 3-based lead-free piezoceramics

Cited 11 times inthomson ciCited 10 times inthomson ci
Title
Large blocking force in Bi 1/2Na 1/2TiO 3-based lead-free piezoceramics
Author
Dittmer, RobertAulbach, EmilJo, WookWebber, Kyle G.Roedel, Juergen
Keywords
Ceramics; Compression test; Elastic behaviour; Ferroelectricity; Phase transformations
Issue Date
2012-07
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
SCRIPTA MATERIALIA, v.67, no.1, pp.100 - 103
Abstract
Blocking stress (sigma(b)) and free strain (S-f) are the most important parameters for piezoelectric actuators, both having a decisive impact on the electromechanical performance. Here, we report on the blocking stress of lead-free piezoceramics, using 0.94Bi(1/2) Na1/2TiO3-0.06BaTiO(3) (6BT) and 0.98(0.94Bi(1/2)Na(1/2)TiO(3)-0.06BaTiO(3))-0.02K(0.5)Na(0.5)NbO3 (2KNN) as prototypical compositions. While 6BT delivers high sigma(b) = 102 MPa at 125 degrees C, the addition of 2 mol.% K0.5Na0.5NbO3 results in a large sigma(b) = 124 MPa at room temperature. Therefore, both lead-free materials outperform lead zirconate titanate at their respective peak temperatures.
URI
Go to Link
DOI
10.1016/j.scriptamat.2012.03.031
ISSN
1359-6462
Appears in Collections:
MSE_Journal Papers
Files in This Item:
2-s2.0-84861201780.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU