Colossal dielectric constant and interfacial charge polarization in a polymer-derived amorphous silicon carbonitride
Source abstract
Abstract
Abstract The dielectric properties of a polymer-derived amorphous silicon carbonitride were measured at different frequencies and temperatures. The results revealed that the material underwent an interfacial-charge polarization process. This process resulted in an S-shaped frequency dependence of the dielectric constant that reached a colossal value of 2 × 104 at room temperature. With regard to the effect of the temperature on the dielectric properties of this material, the dielectric loss peak corresponding to the interfacial-charge polarization process shifted to higher frequencies with temperature by following a 3-dimentional (3D) hopping mechanism. The unique bi-phased amorphous structure of this material accounted for the observed results.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Dielectric materials and actuators · Ferroelectric and Piezoelectric Materials · High voltage insulation and dielectric phenomena
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (24)
Show source-provided references
1. Colombo · 2010
2. A silicon carbonitride ceramic with anomalously high piezoresistivity10.1111/j.1551-2916.2008.02275.x ↗
3. Stress-dependent piezoresistivity of tunneling-percolation systems10.1007/s10853-009-3371-5 ↗
4. Giant piezoresistivity of polymer-derived ceramics at high temperatures10.1016/j.jeurceramsoc.2010.02.024 ↗
5. Electron transport in polymer‐derived amorphous silicon oxycarbonitride ceramics10.1111/j.1551-2916.2009.03044.x ↗
6. Ultrahigh‐temperature semiconductors made from polymer‐derived ceramics10.1111/j.1551-2916.2010.03623.x ↗
7. Silicoboron–carbonitride ceramics: a class of high-temperature, dopable electronic materials10.1063/1.1370540 ↗
8. On electric conduction of amorphous silicon carbonitride derived from a polymeric precursor10.1063/1.4809825 ↗
9. Effect of pyrolysis temperature on the electric conductivity of polymer-derived silicoboron carbonitride10.1016/j.jeurceramsoc.2014.03.012 ↗
10. Effect of acrylic acid additive on electric conductivity of polymer-derived amorphous silicon carbonitride10.1016/j.ceramint.2015.02.139 ↗
11. Polymer–ceramic conversion of liquid polyaluminasilazanes for SiAlCN ceramics10.1111/j.1551-2916.2005.00481.x ↗
12. Dielectric relaxation in solids10.1088/0022-3727/32/14/201 ↗
13. Dielectric and impedance spectroscopy of (Ba, Sm)(Ti, Fe) O3 system in the low-medium frequency range
14. A new understanding of the dielectric relaxation of solids10.1007/BF00542364 ↗
15. Oxygen-vacancy-related low-frequency dielectric relaxation and electrical conduction in B i: S r T i O 310.1103/PhysRevB.62.228 ↗
16. Maxwell–Wagner polarization and interfacial charge at the multi-layers of thermoplastic polymers10.1016/j.elstat.2013.11.012 ↗
17. Maxwell–Wagner relaxation and anomalies of physical properties in Cu0.15Fe1.7PS3 mixed material10.1016/j.jallcom.2015.07.261 ↗
18. Hippel · 1954
19. Brandt · 2014
20. Complex impedance spectra of polymer‐derived silicon oxycarbides10.1111/jace.12356 ↗
21. Impedance spectroscopy study on polymer‐derived amorphous SiAlCO10.1111/jace.14669 ↗
22. Space-charge relaxation in perovskites10.1103/PhysRevB.49.7868 ↗
23. Frequency-dependent conductive behavior of polymer-derived amorphous silicon carbonitride10.1016/j.actamat.2015.02.020 ↗
24. On electronic structure of polymer-derived amorphous silicon carbide ceramics10.1063/1.4881139 ↗