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Integrated Ferroelectrics
An International Journal
Volume 214, 2021 - Issue 1
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Selected Papers of The Second Materials Research Society of Thailand International Conference (MRS-Thailand 2019)

Investigation of Bi0.5(Na0.80K0.20)0.5TiO3-LiNbO3-Ba(Ti0.90Sn0.10)O3 Lead-Free Piezoelectric Ceramics

Pimpilai Wannasuta Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
,
Pharatree Jaitaa Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
,
Orawan Khammana Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand;d Center of Excellence in Materials Science and Technology, Materials Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
,
Panupong Jaibanb Faculty of Science, Energy and Environment, King Mongkut’s University of Technology North Bangkok, Rayong, Thailand
,
Sukanda Jiansirisomboonc School of Ceramic Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand
&
Anucha Watcharapasorna Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand;d Center of Excellence in Materials Science and Technology, Materials Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai, ThailandCorrespondence[email protected]
Pages 98-105 | Received 25 Jul 2019, Accepted 06 Jul 2020, Published online: 16 Mar 2021
 
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Abstract

The ceramics with the formula of (1-y)[0.995Bi0.5(Na0.80K0.20)0.5TiO3-0.005LiNbO3]-yBa(Ti0.90Sn0.10)O3 or (1-y)[0.995BNKT-0.005LN]-yBTS (y = 0-0.05 mol fraction) were successfully prepared by a conventional mixed oxide method. It was found that all compositions showed single phase with a mixed rhombohedral/tetragonal structure. The highest piezoelectric coefficient (d33 = 175 pC/N) with good dielectric (εr = 1775, tanδ = 0.0534) and ferroelectric properties (Pr = 12.33 µC/cm2, Rsq = 1.37) was obtained for y = 0.04 sample. The bipolar S-E loops showed highest Smax = 0.25% at y = 0.05.

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