The dielectric properties of CCTO ceramics prepared via different quick quenching methods
Source abstract
Abstract
Abstract In this work, the microstructure and dielectric properties of CaCu3Ti4O12 (CCTO) ceramics based on sol-gel method prepared via different cooling methods (furnace cooling, air quenching, and water quenching) were systematically studied. The results showed that the dielectric constant of quick quenching samples (air quenching and water quenching) did not drop a lot contrasting to that of the furnace cooling CCTO ceramics. Furthermore, it was also found that the dielectric loss of air quenching CCTO ceramics decreased to 0.030, which was about 40% of the furnace cooling CCTO ceramics (0.074), and the dielectric loss of water quenching samples was as low as 0.044. In addition, the breakdown electric field could also be improved by air quenching. These enhancements could be attributed to the improved properties of the grain boundaries. The results above indicate that a proper quenching method can promote the dielectric properties of CCTO ceramics efficiently.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Dielectric properties of ceramics · Ferroelectric and Piezoelectric Materials · Multiferroics and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (41)
Show source-provided references
1. Multiferroic magnetoelectric composites: historical perspective, status, and future directions10.1063/1.2836410 ↗
2. High dielectric constant in ACu3Ti4O12 and ACu3Ti3FeO12 phases10.1006/jssc.2000.8703 ↗
3. Visible light photo-oxidation of model pollutants using CaCu3Ti4O12: an experimental and theoretical study of optical properties, electronic structure, and selectivity10.1021/ja1090832 ↗
4. Giant dielectric constant response in a copper-titanate10.1016/S0038-1098(00)00182-4 ↗
5. Optical response of high-dielectric-constant perovskite-related oxide10.1126/science.1061655 ↗
6. Giant barrier layer capacitance effects in CaCu3Ti4O12 ceramics10.1002/1521-4095(20020916)14:18<1321::AID-ADMA1321>3.0.CO;2-P ↗
7. Large dielectric constant and Maxwell-Wagner relaxation in Bi2/3Cu3Ti4O1210.1103/PhysRevB.70.144106 ↗
8. Effects of processing conditions on the dielectric properties of CaCu3Ti4O1210.1007/s10832-005-3191-1 ↗
9. Effect of Al doping on the electric and dielectric properties of CaCu3Ti4O1210.1111/j.1551-2916.2007.01983.x ↗
10. Extrinsic origins of the apparent relaxorlike behavior in CaCu3Ti4O12 ceramics at high temperatures: a cautionary tale
11. Influence of Zn doping on microstructures and dielectric properties in CaCu3Ti4O12 ceramic synthesised by semiwet route10.1179/1743676112Y.0000000009 ↗
12. Effect of nickel substitution on electrical and microstructural properties of CaCu3Ti4O12 ceramic10.1016/j.jallcom.2016.12.096 ↗
13. Dielectric properties of CaCu3Ti4O12 (CCTO) doped with GeO210.1016/j.jnoncrysol.2009.07.047 ↗
14. Effects of ZrO2 additions on the dielectric properties of CaCu3Ti4O1210.1063/1.2126142 ↗
15. Influence of Mn doping on the semiconducting properties of CaCu3Ti4O12 ceramics10.1063/1.2200732 ↗
16. Wide ranged La modification in CCTO ceramics through sol-gel: effect on microstructure and dielectric properties10.1080/10584587.2010.492023 ↗
17. Dielectric behavior of Ba-doped CaCu3Ti4O12 ceramics prepared from citrate–nitrate combustion derived powders10.1007/s10854-014-2437-6 ↗
18. Study of the dielectric responses of Eu-doped CaCu3Ti4O1210.1016/j.jallcom.2016.12.422 ↗
19. Improved dielectric properties in A′-site nickel-doped CaCu3Ti4O12 ceramics10.1111/jace.14960 ↗
20. Calcining temperature dependence on structure and dielectric properties of CaCu3Ti4O12 ceramics10.1007/s10854-016-5366-8 ↗
21. Microstructure, dielectric and nonlinear electrical properties associated with sintering conditions in calcium copper titanate ceramics10.1007/s10854-017-6894-6 ↗
22. Structure and dielectric relaxations of CaCu3Ti4O12 ceramics by heat treatments in different atmospheres10.1109/TDEI.2017.006278 ↗
23. Polaron relaxation and non-ohmic behavior in CaCu3Ti4O12 ceramics with different cooling methods10.1016/j.matchemphys.2013.02.042 ↗
24. Large reduction of dielectric losses of CaCu3Ti4O12 ceramics via air quenching10.1016/j.ceramint.2017.02.029 ↗
25. Very low loss tangent and giant dielectric properties of CaCu3Ti4O12 ceramics prepared by the sol–gel process10.1007/s10854-017-7377-5 ↗
26. Sol–gel synthesized pure CaCu3Ti4O12 with very low dielectric loss and high dielectric constant10.1016/j.ceramint.2015.07.140 ↗
27. Very low loss tangent and high dielectric permittivity in pure-CaCu3Ti4O12 ceramics prepared by a modified sol-gel process10.1111/j.1551-2916.2012.05147.x ↗
28. Enhanced dielectric properties of Ag-doped CCTO ceramics for energy storage devices10.1016/j.ceramint.2017.04.130 ↗
29. Varistor ceramics10.1111/j.1151-2916.1999.tb01793.x ↗
30. CaCu3Ti4O12: one-step internal barrier layer capacitor10.1063/1.1463211 ↗
31. Nonlinear electrical properties and giant dielectric response in Na1/3Ca 1/3Y 1/3Cu3Ti4O12 ceramic10.1016/j.materresbull.2017.02.014 ↗
32. The lowered dielectric loss tangent and grain boundary effects in fluorine-doped calcium copper titanate ceramics10.1007/s00339-017-0947-9 ↗
33. Significantly improved non-Ohmic and giant dielectric properties of CaCu3-xZnxTi4O12 ceramics by enhancing grain boundary response10.1016/j.ceramint.2016.11.089 ↗
34. Improved giant dielectric properties of CaCu3Ti4O12 via simultaneously tuning the electrical properties of grains and grain boundaries by F− substitution10.1039/C6RA27381E ↗
35. Colossal dielectric permittivity and electrical properties of the grain boundary of Ca1−3x/2YbxCu3−yMgyTi4O12 (x=0.05, y=0.05 and 0.30)10.1016/j.ceramint.2016.02.067 ↗
36. The origin of giant dielectric relaxation and electrical responses of grains and grain boundaries of W-doped CaCu3Ti4O12 ceramics10.1063/1.4768468 ↗
37. Dielectric relaxations and formation mechanism of giant dielectric constant step in CaCu3Ti4O12 ceramics10.1063/1.2785128 ↗
38. Dielectric and magnetic properties of Fe− and Nb- doped CaCu3Ti4O1210.1103/PhysRevB.72.104111 ↗
39. Reoxidation effects of Ba-excessive barium titanate ceramics for laminated positive temperature coefficient thermistors10.1111/j.1551-2916.2011.05041.x ↗
40. Abnormal reoxidation effects in Ba-excess La-doped BaTiO3 ceramics prepared by the reduction-reoxidation method10.1111/jace.14823 ↗
41. Role of oxygen on the phase stability and microstructure evolution of CaCu3Ti4O12 ceramics10.1016/j.jeurceramsoc.2016.07.039 ↗