| Autor: |
Liu, Yang, He, Tusheng, Zeng, Jiecheng |
| Předmět: |
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| Zdroj: |
Ferroelectrics; 2020, Vol. 568 Issue 1, p123-131, 9p |
| Abstrakt: |
A novel perovskite La0.86Cu3Ti3.42Al0.58O12 (LCTAO) ceramic was fabricated by a conventional solid-state method, and the dielectric property was systematically investigated. Pure phase with a body-centered cubic structure was confirmed by X-ray diffraction. High dielectric permittivity was performed in wide temperature and frequency ranges. Impedance spectroscopy analysis demonstrated microstructure was electrically heterogeneous, which resulted in a giant dielectric response based on the internal barrier layer capacitor (IBLC) model. The results of X-ray photoelectron spectroscopy indicated the active electron hopping process of the mixed-valence states charge carriers, i.e. Cu+/Cu2+, Ti3+/Ti4+, may be responsible for the semiconduction of grains. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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