Large electrostrictive effect in K 0.99 Li 0.01 Ta 1− x  Nb  x  O 3  lead‐free single crystals | Zendy

Tian Hao | Zendy; Jia Jieshu | Zendy; Zhou Zhongxiang | Zendy; Chen Deying | Zendy

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Large electrostrictive effect in K 0.99 Li 0.01 Ta 1− x Nb x O 3 lead‐free single crystals

Author(s) -

Tian Hao,

Jia Jieshu,

Zhou Zhongxiang,

Chen Deying

Publication year - 2012

Publication title -

physica status solidi (a)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.532

H-Index - 104

eISSN - 1862-6319

pISSN - 1862-6300

DOI - 10.1002/pssa.201127677

Subject(s) - electrostriction , materials science , dielectric , curie temperature , analytical chemistry (journal) , single crystal , niobium , crystallography , condensed matter physics , piezoelectricity , chemistry , metallurgy , optoelectronics , physics , composite material , chromatography , ferromagnetism

Paraelectric K 0.99 Li 0.01 Ta 1− x Nb x O 3 ( x = 0.38, 0.39, 0.40) lead‐free single crystals have been grown by the top‐seeded solution growth method. All the crystals have Curie temperature ( T c ) close to room temperature (RT), and possess large relative dielectric constants near T c . A scanning Michelson interferometer was used to investigate the electrostrictive (ES) behavior of the crystals. The crystals show pure ES characteristics and large electrosrictive coefficients. The ES coefficient Q 11 of K 0.99 Li 0.01 Ta 0.60 Nb 0.40 O 3 reaches as high as 0.12 m 4 /C 2 , about six times of the value of Pb(Mg 1/3 Nb 2/3 )O 3 ceramics.

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