Dielectric relaxation behavior and mechanism of Y 2/3 Cu 3 Ti 4 O 12 ceramic
Source abstract
Abstract
Abstract Y 2/3 Cu 3 Ti 4 O 12 (YCTO) ceramics were sintered in air (YCTO-air) and pure O 2 atmosphere (YCTO-O 2 ), respectively. It was found that the permittivity and dielectric loss of YCTO-O 2 were decreased drastically in low frequency. The frequency dependent impedance ( Z ″) and modulus ( M ″) spectra of YCTO-air and YCTO-O 2 show a thermal activated process. The scaling behavior of both Z ″ and M ″ spectra further suggest that the distribution of relaxation times is temperature independent. The Cole–Cole plot in impedance formalism shows that electrical response of the samples originates from both grains and grain-boundaries. Conductivity ( σ ′) spectra follow Universal Dielectric Repose law. The short-range translation hopping assisted by small polaron hopping mechanisms for YCTO-O 2 . Moreover, the scaling behavior of σ ′ spectra further confirms that the distribution of local electrical response time is temperature independent.
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 (55)
Show source-provided references
1. Optical response of high-dielectric-constant perovskite-related oxide10.1126/science.1061655 ↗
2. The route to resource-efficient novel materials10.1038/nmat3180 ↗
3. Electrical heterogeneity in CaCu3Ti4O12 ceramics fabricated by sol–gel method10.1016/j.ssc.2007.04.005 ↗
4. ACu3Ti4O12 and ACu3Ru4O12 perovskites: high dielectric constants and valence degeneracy10.1016/S1293-2558(01)01262-6 ↗
5. Giant dielectric constant and good temperature stability in Y2/3Cu3Ti4O12 ceramics10.1111/j.1551-2916.2012.05152.x ↗
6. Impedance spectroscopy studies on polycrystalline BiFeO3 thin films on Pt/Si substrates10.1063/1.3078822 ↗
7. Electrical properties and microstructural characteristics of nonstoichiometric CaCu3xTi4O12 ceramics10.1016/j.jallcom.2008.02.042 ↗
8. Sol–gel derived CaCu3Ti4O12 ceramics: synthesis, characterization and electrical properties10.1016/j.materresbull.2007.07.012 ↗
9. Effects of sintering temperature on the internal barrier layer capacitor (IBLC) structure in CaCu3Ti4O12 (CCTO) ceramics10.1016/j.jeurceramsoc.2012.03.040 ↗
10. On the magnetism of Ln2/3Cu3Ti4O12 (Ln=lanthanide)10.1140/epjb/e2010-10796-1 ↗
11. Dielectric behavior of Bi2/3Cu3Ti4O12 ceramic and thick films10.1007/s10832-008-9534-y ↗
12. Large dielectric constant and Maxwell-Wagner relaxation in Bi2/3Cu3Ti4O1210.1103/PhysRevB.70.144106 ↗
13. Microstructural and dielectric properties of donor doped (La3+) CaCu3Ti4O12 ceramics
14. The origin of giant dielectric relaxation and electrical responses of grains and grain boundaries of W-doped CaCu3Ti4O12 ceramics10.1063/1.4768468 ↗
15. Oxygen-vacancy-related dielectric relaxations in SrTiO3 at high temperatures10.1063/1.4794349 ↗
16. Dielectric investigations in nanostructured tetragonal BaTiO3 ceramics10.1016/j.materresbull.2013.01.009 ↗
17. Oxygen-vacancy-related dielectric relaxations in Na0.5K0.5NbO310.1016/j.ssc.2013.11.008 ↗
18. Liquid phase sintering behavior and improvement of giant dielectric properties by modifying microstructure and electrical response at grain boundaries of CaCu3Ti4-xMoxO12 ceramics10.1016/j.jallcom.2013.08.119 ↗
19. Giant dielectric constant and good temperature stability in Y2/3Cu3Ti4O12 ceramics10.1111/j.1551-2916.2012.05152.x ↗
20. Origin of giant permittivity and high-temperature dielectric anomaly behavior in Na0.5Y0.5Cu3Ti4O12 ceramics10.1063/1.4809927 ↗
21. Piezoelectric properties and stabilities of CuO-modified Ba(Ti, Zr)O3 ceramics10.1063/1.3072347 ↗
22. Role of doping and CuO segregation in improving the giant permittivity of CaCu3Ti4O12
23. Giant dielectric-permittivity phenomena of compositionally and structurally CaCu3Ti4O12-like oxide ceramics10.1111/j.1551-2916.2009.03298.x ↗
24. Enhancement of giant dielectric response in Ga-doped CaCu3Ti4O12 ceramics10.1016/j.ceramint.2012.07.027 ↗
25. Synthesis, dielectric properties, and influences oxygen vacancies have on electrical properties of Na1/2Bi1/2Cu3Ti4O12 ceramics prepared by a urea combustion method10.1007/s10971-015-3814-1 ↗
26. Giant barrier layer capacitance effects in CaCu3Ti4O12 ceramics10.1002/1521-4095(20020916)14:18<1321::AID-ADMA1321>3.0.CO;2-P ↗
27. Phase formation and enhanced dielectric response of Y2/3Cu3Ti4O12 ceramics derived from the sol-gel process10.1111/jace.13355 ↗
28. Low dielectric loss, dielectric response, and conduction behavior in Na-doped Y2/3Cu3Ti4O12 ceramics10.1063/1.4891240 ↗
29. Dielectric spectra and electrical conduction in Fe-doped SrTiO310.1103/PhysRevB.61.3922 ↗
30. Diffuse dielectric anomaly in perovskite-type ferroelectric oxides in the temperature range of 400–700degreesC10.1063/1.1589595 ↗
31. Dielectric relaxation in BaTi0.85(Fe1/2Nb1/2)0.15O3 perovskite ceramic10.1063/1.2369532 ↗
32. Dielectric characteristics of novel Z-type planar hexaferrite with Cu modification10.1016/S0167-577X(02)00391-9 ↗
33. Magnetic and dielectric properties of polycrystalline La doped barium Z-type hexaferrite for hyper-frequency applications
34. Dielectric behavior of Mn-substituted Co2Z hexaferrites10.1016/S0304-8853(02)00364-5 ↗
35. Giant dielectric and electrical properties of sodium yttrium copper titanate: Na1/2Y1/2Cu3Ti4O12
36. Effects of Cu stoichiometry on the microstructure, electrical conduction, and dielectric responses of Y2/3Cu3Ti4O1210.1016/j.ceramint.2015.05.089 ↗
37. Impedance spectroscopy of multiferroic PbZrxTi1−xO3/CoFe2O4 layered thin films10.1103/PhysRevB.77.014111 ↗
38. Low-temperature scaling behavior of BaFe0.5Nb0.5O310.1103/PhysRevB.65.134103 ↗
39. Frequency-temperature response of ferroelectromagnetic Pb(Fe1/2Nb1/2)O3 ceramics obtained by different precursors. Part II. Impedance spectroscopy characterization10.1063/1.1870100 ↗
40. Large dielectric constant and Maxwell-Wagner relaxation in Bi2&z.urule;3Cu3Ti4O1210.1103/PhysRevB.70.144106 ↗
41. Influence of interface point defect on the dielectric properties of Y doped CaCu3Ti4O12 ceramics10.1142/S2010135X16500090 ↗
42. Impedance and modulus studies of magnetic ceramic oxide Ba2Co2Fe12O22 (Co2Y) doped with Bi2O310.1063/1.3615935 ↗
43. Effect of Eu–Ni substitution on electrical and dielectric properties of Co–Sr–Y-type hexagonal ferrite10.1016/j.materresbull.2013.09.012 ↗
44. Oxygen-vacancy-related relaxation and scaling behaviors of Bi0.9La0.1Fe0.98Mg0.02O3 ferroelectric thin films10.1103/PhysRevB.82.024102 ↗
45. The dielectric modulus: relaxation versus retardation10.1016/S0167-2738(97)00461-X ↗
46. Comments on the electric modulus function10.1016/j.jnoncrysol.2004.07.089 ↗
47. Role of ionic diffusion in polarization in vitreous ionic conductors
48. Non-symmetrical dielectric relaxation behaviour arising from a simple empirical decay function10.1039/tf9706600080 ↗
49. Accurate fitting of immittance spectroscopy frequency-response data using the stretched exponential model10.1016/S0022-3093(96)00657-6 ↗
50. General susceptibility functions for relaxations in disordered systems10.1063/1.373824 ↗
51. Dipolar-glass model for lead magnesium niobate10.1103/PhysRevB.43.8316 ↗
52. Dielectric relaxation in solids: Chelsea dielectric press10.1088/0022-3727/32/14/201 ↗
53. Carrier concentrations and relaxation spectroscopy: new information from scaling properties of conductivity spectra in ionically conducting glasses10.1103/PhysRevLett.78.2160 ↗
54. Scaling properties of the conductivity spectra of glasses and supercooled melts10.1016/S0167-2738(97)00463-3 ↗
55. Impedance and dielectric spectroscopy revisited: distinguishing localized relaxation from long-range conductivity10.1016/0022-3697(94)90575-4 ↗