Microstructural design and properties of PMNT crystal-embedded barium calcium zirconate titanate ceramics
Source abstract
Abstract
Abstract In this study, BCZT-0.02Bi ceramics embedded with PMNT single crystals in the amount of 1, 3 and 5 wt% were prepared. The ceramics were sintered in the temperature range of 1100–1200 °C for 2 h. All the samples were characterized in terms of microstructure, and dielectric and ferroelectric properties. The microstructural characterization revealed good interfaces between PMNT single crystals and BCZT-0.02Bi grains. The addition of PMNT single crystals was found to increase the dielectric constant of the ceramics. The temperature dependences of dielectric permittivity and ferroelectric hysteresis loops also indicated an increase in relaxor behavior with increasing PMNT content. The important factors related to the relaxor behavior in this material system were discussed in detail. The BCZT-0.02Bi-xPMNT ceramic composites with exceptionally large dielectric constant with very low loss and linear P-E behavior may be used as a viable replacement for lead-based materials in electromechanical actuators and sensors and in frequency-tunable capacitors.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Dielectric materials and actuators · Microwave Dielectric Ceramics Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (17)
Show source-provided references
1. Recent progress in relaxor ferroelectrics with perovskite structure10.1007/s10853-005-5915-7 ↗
2. S.G. Lee, S.M. Rhim, M.C. Kim, Ferroelectric Single Crystal Wafer and Process for the Preparation Thereof, Patent Application Publication no. 2001/0035123A1, United States, 2001, pp. 1–5.
3. Agency for technology and standards industry and energy of the Korean Government
4. Large area 0-3 and 1-3 piezoelectric composites based on single crystal PMN-PT for transducer applications10.1016/j.phpro.2010.01.115 ↗
5. Change in the dielectric properties of normal and relaxor ferroelectric ceramic composites in BT-PZT and PMN-PZT systems by an uniaxial compressive stress10.1080/00150190600732850 ↗
6. Preparation and characterization of ceramic nanocomposites in the PZT-BT system10.1016/j.ceramint.2007.10.032 ↗
7. Enhanced piezoelectric properties of (Ba0.85Ca0.15)(Ti0.9Zr0.1)O3 lead-free ceramics by optimizing calcination and sintering temperature10.1016/j.jeurceramsoc.2011.04.023 ↗
8. Enhanced dielectric and piezoelectric properties of BZT-BCT system near MPB10.1016/j.ceramint.2014.06.001 ↗
9. Comparative study of properties of BCZT ceramics prepared from conventional and sol-gel auto combustion powders10.1080/10584587.2016.1199913 ↗
10. Acoustic properties of particle/polymer composites for ultrasonic transducer backing applications10.1109/58.63106 ↗
11. 〈http://www.hcmat.com/Pmn_Properties.html〉 (Accessed 27 November 2016).
12. Strain engineering effects on electrical properties of lead-free piezoelectric thin films on Si wafers
13. Heat capacity, thermal conductivity, and thermal expansion of barium titanate-based ceramics10.1016/j.tca.2004.02.008 ↗
14. A. Peláiz-Barranco, F. Calderón-Piñar, O. García-Zaldívar and Y. González-Abreu, Relaxor behaviour in ferroelectric ceramics, intech, Advances in Ferroelectrics, Chapter 5, 2013, 85-107.
15. Diffusion phase transition and impedance spectroscopy of Bi2O3/CuO co-doped BCZT lead-free ceramics10.1007/s10854-015-4147-0 ↗
16. Electrostrictive effect in lead magnesium niobate single crystals10.1063/1.327724 ↗
17. Decoding the fingerprint of ferroelectric loops: comprehension of the materials properties and structure10.1111/jace.12773 ↗