| Title |
Dielectric spectroscopy of high entropy perovskite ceramics |
| Translation of Title |
Didelės netvarkos perovskitinių keramikų dielektriniai tyrimai žemose temperatūrose. |
| Authors |
Mahadevaiah, Shamika |
| Full Text |
|
| Pages |
46 |
| Keywords [eng] |
High-entropy ceramics (HEC), Perovskite, Dielectric spectroscopy, Energy storage, Temperature dependence, Frequency dependence, Maxwell -Wagner polarization, Grain boundary resistance, Ionic radius, dipolar realaxtion. |
| Abstract [eng] |
This thesis focuses on the dielectric spectroscopy of high-entropy perovskite ceramics used for energy storage applications. The study investigates the dielectric properties of(Ba0.2Sr0.2Ca0.2La0.2X0.2)TiO3 ceramics, where X represents Li, K, Na, Cs, and Ag. Both solid-state route and sol-gel route synthesis method were used to prepare the samples, and their dielectric behaviour was analysed over different temperatures and frequencies. The results show that dielectric properties depend strongly on temperature, frequency and ionic radius. Solid state samples generally exhibited higher dielectric constants but also higher dielectric losses due to their large grain size and defects while sol-gel samples exhibited lower dielectric loss this is due to their small grain sizes. |
| Dissertation Institution |
Vilniaus universitetas. |
| Type |
Master thesis |
| Language |
English |
| Publication date |
2026 |
