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Electric Field-Induced Large Strain in Ni/Sb-co Doped (Bi0.5Na0.5) TiO3-Based Lead-Free Ceramics
- Source :
- Journal of Electronic Materials. 47:1512-1518
- Publication Year :
- 2017
- Publisher :
- Springer Science and Business Media LLC, 2017.
-
Abstract
- Lead-free piezoelectric ceramics (Bi0.5Na0.5)0.935Ba0.065Ti1−x (Ni0.5Sb0.5) x O3 (BNBT6.5-xNS) have been fabricated using conventional solid sintering technique. The effect of (Ni, Sb) doping on the phase structure and electrical properties of BNBT6.5 ceramics were systematically investigated. Results show that the addition of (Ni, Sb) destroyed the ferroelectric long-range order of BNBT6.5 and shifted the ferroelectric–relaxor transition temperature (T F–R) down to room temperature. Thus, this process induced an ergodic relaxor phase at zero field in samples with x = 0.005. Under the electric field, the ergodic relaxor phase could reversibly transform to ferroelectric phase, which promotes the strain response with peak value of 0.38% (at 80 kV/cm, corresponding to d 33 * = 479 pm/V) at x = 0.005. Temperature-dependent measurements of both polarization and strain confirmed that the large strain originated from a reversible field-induced ergodic relaxor to ferroelectric phase transformation. The proposed material exhibits potential for nonlinear actuators.
- Subjects :
- 010302 applied physics
Phase transition
Materials science
Transition temperature
Doping
Analytical chemistry
02 engineering and technology
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Piezoelectricity
Ferroelectricity
Electronic, Optical and Magnetic Materials
Electric field
Phase (matter)
visual_art
0103 physical sciences
Materials Chemistry
visual_art.visual_art_medium
Ceramic
Electrical and Electronic Engineering
0210 nano-technology
Subjects
Details
- ISSN :
- 1543186X and 03615235
- Volume :
- 47
- Database :
- OpenAIRE
- Journal :
- Journal of Electronic Materials
- Accession number :
- edsair.doi...........96970b9ada7f72171c20c706315308a9