Sintering and electrical properties of La-modified (Na0.52K0.45Li0.03)1−3xLax(Nb0.88Sb0.09Ta0.03)O3 lead-free ceramics
Source abstract
Abstract
Abstract (Na 0.52 K 0.45 Li 0.03 ) 1−3 x La x (Nb 0.88 Sb 0.09 Ta 0.03 )O 3 (NKLL x NST) lead-free ceramics were prepared by normal sintering and their dielectric and piezoelectric properties were investigated. The X-ray methods indicate that the NKLL x NST ceramics with x ≤0.003 present a pure perovskite phase at room temperature. The bulk density of NKLL x NST ceramics increases with proper amount of La 2 O 3 contents, and reaches its highest value of 4.544 g/cm 3 with the addition of 0.3 mol% La 2 O 3 . At x =0.003, remnant polarization P r , piezoelectric constant d 33 and planar mode electromechanical coupling factor k p of NKLL x NST ceramics reach the highest values of 37.80 μC/cm 2 , 346 pC/N and 40%, respectively, exhibiting excellent “soft” piezoelectric characteristics, demonstrating a tremendous potential of the compositions studied for device applications.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Microwave Dielectric Ceramics Synthesis · Acoustic Wave Resonator Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (22)
Show source-provided references
1. Lead-free piezoceramics10.1038/nature03028 ↗
2. Preparation and characterization of KNN ceramics10.1016/j.jeurceramsoc.2004.11.022 ↗
3. Effect of mechanical activation on the structure and ferroelectric property of Na0.5K0.5NbO310.1016/j.materresbull.2011.05.001 ↗
4. Piezoelectric properties of Li- and Ta-modified (K0.5Na0.5)NbO3 ceramics10.1063/1.2123387 ↗
5. Preparation and piezoelectric properties of (K0.5Na0.5)NbO3 lead-free piezoelectric ceramics with pressure-less sintering10.1016/j.mseb.2006.03.039 ↗
6. Perspective on the development of lead-free piezoceramics10.1111/j.1551-2916.2009.03061.x ↗
7. Properties of hot-pressed ferroelectric alkali niobate ceramics10.1111/j.1151-2916.1967.tb15121.x ↗
8. Ferroelectric and piezoelectric properties of fine-grained Na0.5K0.5NbO3 lead-free piezoelectric ceramics prepared by spark plasma sintering10.1111/j.1551-2916.2005.00743.x ↗
9. Structure and electrical properties of lead-free (Na0.5K0.5)NbO3–BaTiO3 ceramics10.1143/JJAP.43.6662 ↗
10. Dielectric and piezoelectric properties of lead-free (Na0.5K0.5)NbO3–SrTiO3 ceramics10.1016/j.ssc.2003.10.026 ↗
11. Phase transitional behavior and piezoelectric properties of Na0.5K0.5NbO3–LiNbO3 ceramics10.1063/1.1813636 ↗
12. (Na0.5K0.5)NbO3–LiTaO3 lead-free piezoelectric ceramics10.1016/j.matlet.2004.07.057 ↗
13. Mitigation of thermal and fatigue behavior in K0.5Na0.5NbO3-based lead free piezoceramics10.1063/1.2908960 ↗
14. Phase transitional behavior and electrical properties of lead-free (K0.44Na0.52Li0.04)Nb0.96-xTaxSb0.04O3 piezoelectric ceramics10.1063/1.2436648 ↗
15. Orthorhombic to tetragonal phase transition due to stress release in (Li, Ta)-doped (K, Na)NbO3 lead-free piezoceramics10.1016/j.jeurceramsoc.2011.09.001 ↗
16. Phase transformation and tunable piezoelectric properties of lead-free (Na0.52K0.48−xLix)(Nb1−x−ySbyTax)O3 system10.1111/j.1551-2916.2008.02871.x ↗
17. Improvement in temperature stability and modified polymorphic phase transition of La-doped (Na0.52K0.44Li0.04)Nb0.8Ta0.2O3 lead-free piezoelectric ceramics10.1016/j.matlet.2011.12.014 ↗
18. Effects of CaAl2O4 on the electrical properties and temperature stability of (Na0.53K0.404Li0.066)Nb0.92Sb0.08O3 ceramics10.1016/j.jallcom.2012.07.039 ↗
19. Low-temperature sintering of CuO-doped 0.94(K0.48Na0.535)NbO3–0.06LiNbO3 lead-free piezoelectric ceramics10.1111/j.1551-2916.2010.04227.x ↗
20. Effect of CuO on dielectric and piezoelectric properties of (K0.4425Na0.52Li0.0375)(Nb0.87Ta0.06Sb0.07)O3 ceramics10.1016/j.jallcom.2011.11.120 ↗
21. Phase structure and piezoelectric properties of Ca- and Ba- doped K1/2Na1/2NbO3 lead-free ceramics10.1016/j.ceramint.2012.10.181 ↗
22. Polymorphic phase transition dependence of piezoelectric properties in (K0.5Na0.5)NbO3–(Bi0.5K0.5)TiO3 lead-free ceramics10.1088/0022-3727/41/11/115413 ↗