|
|
Publication
|
| Research Title |
Giant Dielectric Response, Electrical Properties and Nonlinear Current-Voltage Characteristic of Al2O3CaCu3Ti4O12 Nanocomposites |
| Date of Distribution |
13 September 2018 |
| Conference |
| Title of the Conference |
NANOSMAT 2018 “13th International Conference on Surfaces, Coatings and Nanostructured Materials" |
| Organiser |
Gdansk University of Technology Faculty of Electronics, Telecommunication and Informatics Department of Metrology & Optoelectronics, Narutowicza Str.11/12 | 80-233 Gdansk, Poland |
| Conference Place |
Gdansk University of Technology, Poland |
| Province/State |
Gdansk, Poland |
| Conference Date |
11 September 2018 |
| To |
14 September 2018 |
| Proceeding Paper |
| Volume |
- |
| Issue |
- |
| Page |
- |
| Editors/edition/publisher |
|
| Abstract |
Recently, CaCu3Ti4O12 (CCTO) has been widely studied due to its giant dielectric permittivity (104) without detectable phase transition over a wide temperature range and its nonlinear currentvoltage behavior [1,2]. Unfortunately, the dielectric loss tangent (tan) was very large, which is unsuitable for ceramic capacitor applications. Although the exact origin of giant dielectric response in CCTO is still unclear, the internal barrier layer capacitor (IBLC) effect is widely accepted to be the primary cause [1,2]. In this work, xAl2O3(1-x)CaCu3Ti4O12, where x = 0, 2, and 10 vol.%, nanocomposites were prepared by a conventional mixed oxide method using Al2O3 nanopowders with particles sizes of 2040 nm. The giant dielectric properties, electrical responses and nonlinear characteristics of Al2O3CCTO nanocomposites were investigated. Interestingly, the (2vol.%)Al2O3CCTO inhibited improved dielectric properties with large and low tan values of about of 2.0 104 and 0.038, respectively. The nonlinear currentvoltage properties of CCTO ceramics can also be enhanced by addition of Al2O3. The improved dielectric and nonlinear electrical properties can be well explained based on the IBLC effect, resulting from the improved electrical properties of internal interfaces. |
| Author |
|
| Peer Review Status |
ไม่มีผู้ประเมินอิสระ |
| Level of Conference |
นานาชาติ |
| Type of Proceeding |
Abstract |
| Type of Presentation |
Oral |
| Part of thesis |
true |
| Presentation awarding |
false |
| Attach file |
|
| Citation |
0
|
|
|
|
|
|
|
|
|
Journal Publication
ไทย