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The effect of (Li,Ce) doping in Aurivillius phase material (Na 0.52 K 0.42 Li 0.06 ) 0.5 Bi 2.5 (Nb 1.88 Sb 0.06 Ta 0.06 )O 9
Author(s) -
Gai ZhiGang,
Feng YuanYuan,
Wang JinFeng,
Zhao MingLei,
Zheng LiMei,
Wang ChunMing,
Zhang Shujun,
Shrout Thomas R.
Publication year - 2010
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.200925289
Subject(s) - aurivillius , curie temperature , materials science , analytical chemistry (journal) , bismuth , lithium (medication) , cerium , doping , ferroelectricity , chemistry , dielectric , metallurgy , ferromagnetism , condensed matter physics , endocrinology , medicine , physics , optoelectronics , chromatography
The effect of (Li,Ce) substitution for A‐site on the properties of [(Na 0.52 K 0.42 Li 0.06 )Bi] 0.5 Bi 2 (Nb 1.88 Sb 0.06 Ta 0.06 )O 9 ‐based ceramics was investigated. The piezoelectric activity of [(Na 0.52 K 0.42 Li 0.06 )Bi] 0.5 Bi 2 (Nb 1.88 Sb 0.06 Ta 0.06 )O 9 ‐based ceramics is significantly improved by the modification of lithium and cerium. The Curie temperature ( T C ) gradually decreases from 625 to 605 o C with increasing the (Li,Ce) modification. The piezoelectric coefficient d 33 of the [(Na 0.52 K 0.42 Li 0.06 )Bi] 0.44 (Li,Ce) 0.03 [] 0.03 Bi 2 (Nb 1.88 Sb 0.06 Ta 0.06 )O 9 ceramic was found to be 28 pC/N, the highest value among the [(Na 0.52 K 0.42 Li 0.06 )Bi] 0.5 Bi 2 (Nb 1.88 Sb 0.06 Ta 0.06 )O 9 ‐based ceramics, also almost 50% higher than the reported d 33 values of other Bismuth layer‐structured ferroelectric (BLSF) systems (∼5–19 pC/N). The planar coupling factor k p and k t were found to be 7.0 and 28.0%, together with the high T C (∼610 °C) and stable piezoelectric properties, demonstrating that the (Li,Ce) modified [(Na 0.52 K 0.42 Li 0.06 )Bi] 0.5 Bi 2 (Nb 1.88 Sb 0.06 Ta 0.06 )O 9 ‐based material a promising candidate for high temperature applications.