Volume 104, Number 5, December 2013
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||23 December 2013|
Electrical properties of lead-free Fe-doped niobium-rich potassium lithium tantalate niobate single crystals
1 Department of Chemistry, Harbin Institute of Technology - Harbin 150001, PRC
2 Department of Physics, Harbin Institute of Technology - Harbin 150001, PRC
3 Multifunctional Electronic Materials and Device Research Lab, Department of Electrical and Computer Engineering, The University of Texas at San Antonio - San Antonio, TX 78249, USA
Received: 6 December 2013
Accepted: 6 December 2013
Lead-free, 0.025 wt% Fe-doped niobium-rich potassium lithium tantalate niobate Fe: K0.95Li0.05Ta1−xNbxO3 single crystals have been grown by the top-seeded melt growth method. All the transition temperatures have been determined by the dielectric constant and loss-dependent temperature. The spontaneous polarizations computed by the integration of pyroelectric coefficients over all the temperatures are consistent with the results of the P-E hysteresis loops. The piezoelectric constants and electromechanical coupling factors are attractive among lead-free piezoelectric materials. With suitable Fe-doping, the electrical properties of KLTN single crystals have been improved overall and can be compared to those of the current important lead-based piezoelectric materials.
PACS: 77.80.B- – Phase transitions and Curie point / 77.65.-j – Piezoelectricity and electromechanical effects / 81.10.Dn – Growth from solutions
© EPLA, 2013
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