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

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Comparison of structural, ferroelectric, and strain properties between A-site donor and acceptor doped Bi1/2(Na0.82K0.18)1/2TiO3 ceramics

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Title
Comparison of structural, ferroelectric, and strain properties between A-site donor and acceptor doped Bi1/2(Na0.82K0.18)1/2TiO3 ceramics
Author
Dinh, Thi HinhBafandeh, Mohammad RezaKang, Jin-KyuHong, Chang-HyoJo, WookLee, Jae-Shin
Issue Date
2015-11
Publisher
ELSEVIER SCI LTD
Citation
CERAMICS INTERNATIONAL, v.41, no.S1, pp.S458 - S463
Abstract
Effects of Li- and La-doping on the structural, ferroelectric, and strain properties of Bi-1/2(Na0.82K0.18)(1/2)TiO3 (BNKT) ceramics were compared. In this study, Li+ was selected as the A-site acceptor and La3+ as the A-site donor. Li doping resulted in hardening of BNKT with an improved mechanical quality factor (Q(m)) of 253 and an increased coercive field (E-c), while La doping brought about a softening effect that was evidenced by an improved piezoelectric constant (d(33)) of 172 pC/N and decreased E-c. In addition, the large normalized bipolar strain (S-max/E-max) was obtained up to 650 pm/V in 3 mol% La-doped BNKT.
URI
https://scholarworks.unist.ac.kr/handle/201301/11523
URL
http://www.sciencedirect.com/science/article/pii/S0272884215005556
DOI
10.1016/j.ceramint.2015.03.150
ISSN
0272-8842
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