(K, Na, Li)(Nb, Ta)O3:Mn lead-free single crystal with high piezoelectric properties.
Lead-free single crystal, (K, Na, Li)(Nb, Ta)O3:Mn, was successfully grown using top-seeded solution growth method. Complete matrix of dielectric, piezoelectric and elastic constants for [001]Cpoled single crystal was determined. The piezoelectric coefficientd33measured by the resonance method was 545 pC/N, which is almost three times that of its ceramic counterpart. The values measured by the Berlincourt meter ( [Formula: see text]) and strain-field curve ( [Formula: see text]) were even higher. The differences were assumed to relate with the different extrinsic contributions of domain wall vibration and domain wall translation during the measurements by different approaches, where the intrinsic contribution (on the order of 539 pm/V) was supposed to be the same. The crystal has ultrahigh electromechanical coupling factor (k33~ 95%) and high ultrasound velocity, which make it promising for high frequency medical transducer applications.
Condensed Matter Science and Technology Institute, Harbin Institute of Technology, Harbin 150080, China.
Xiaoqing
X
Huo
Condensed Matter Science and Technology Institute, Harbin Institute of Technology, Harbin 150080, China.
Rui
R
Zhang
Condensed Matter Science and Technology Institute, Harbin Institute of Technology, Harbin 150080, China.
Limei
L
Zheng
Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
Shujun
S
Zhang
Department of Chemistry, Harbin Institute of Technology, Harbin 150001, China.
Rui
R
Wang
Condensed Matter Science and Technology Institute, Harbin Institute of Technology, Harbin 150080, China.
Junjun
J
Wang
Condensed Matter Science and Technology Institute, Harbin Institute of Technology, Harbin 150080, China.
Shijing
S
Sang
Condensed Matter Science and Technology Institute, Harbin Institute of Technology, Harbin 150080, China.
Bin
B
Yang
Condensed Matter Science and Technology Institute, Harbin Institute of Technology, Harbin 150080, China; Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
Wenwu
W
Cao
KNN; electromechanical coupling factor; lead-free; single crystal