Abstract
We investigated dielectric properties of perovskite nanosheets with different compositions (Ca 2-xSr xNb 3-yTa yO 10) to study the influence of A- and B-site modifications on dielectric properties. Langmuir-Blodgett deposition was employed to fabricate multilayer nanofilms of perovskite nanosheets. In these nanosheets, the A-site modification by Sr 2+ ions causes the increase in ε r value, whereas the B-site modification with Ta 5+ ions improves leakage current characteristics and reduces permittivity value. The optimized property (ε r = 240) is obtained for Sr 2Nb 3O 10 nanosheet. We also discuss high-κ properties of Ca 2-xSr xNb 3-yTa yO 10 nanosheets by detailed investigations on first-principles calculations and interfacial structures.
Original language | English |
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Pages (from-to) | 29-36 |
Number of pages | 8 |
Journal | International Journal of Applied Ceramic Technology |
Volume | 9 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2012 Jan |
Externally published | Yes |
ASJC Scopus subject areas
- Ceramics and Composites
- Marketing
- Materials Chemistry
- Condensed Matter Physics