Large electric field induced strain in a new lead-free ternary Na0.5Bi0.5TiO3-SrTiO3-BaTiO3 solid solution

The new lead-free ternary system (0.8-x)NBT-0.2ST-xBT prepared by solid state reaction with 100%-perovskite phase, undergoes a structural change from pseudo-cubic (x <= 0.04)to tetragonal (x >= 0.06)along with a possible phase coexistence between 0.04 <= x <= 0.06. At x=0.04, the solid solution exhibits an optimum dielectric constant epsilon(max) of 2670, a strong relaxor behavior with a high diffuseness coefficient close to 2evidenced by slim P-E loops, excellent piezoelectric properties such as optimum strain value Smax of 0.424%and a normalized piezoelectric constant d(33)*of 688 pm/V. The above encouraging results may be helpful for further investigations of NBT-ST based ternary systems in search of a potential Pb-free piezoelectric material. (C) 2016 Elsevier B.V. All rights reserved
Publisher
ELSEVIER SCIENCE BV
Issue Date
2016-12
Language
ENG
Keywords

NBT-BT CERAMICS; DIELECTRIC-PROPERTIES; FREE PIEZOCERAMICS; BEHAVIOR

Citation

MATERIALS LETTERS, v.184, pp.197 - 199

ISSN
0167-577X
DOI
10.1016/j.matlet.2016.08.076
URI
http://hdl.handle.net/10203/214382
Appears in Collection
MS-Journal Papers(저널논문)
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