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 |
|---|---|
| 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 |
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ASJC Scopus subject areas
- Ceramics and Composites
- Marketing
- Materials Chemistry
- Condensed Matter Physics
Cite this
A- and B-site modified perovskite nanosheets and their integrations into high-κ dielectric thin films. / Osada, Minoru; Sasaki, Takayoshi.
In: International Journal of Applied Ceramic Technology, Vol. 9, No. 1, 01.2012, p. 29-36.Research output: Contribution to journal › Article
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TY - JOUR
T1 - A- and B-site modified perovskite nanosheets and their integrations into high-κ dielectric thin films
AU - Osada, Minoru
AU - Sasaki, Takayoshi
PY - 2012/1
Y1 - 2012/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84855938618&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84855938618&partnerID=8YFLogxK
U2 - 10.1111/j.1744-7402.2011.00713.x
DO - 10.1111/j.1744-7402.2011.00713.x
M3 - Article
AN - SCOPUS:84855938618
VL - 9
SP - 29
EP - 36
JO - International Journal of Applied Ceramic Technology
JF - International Journal of Applied Ceramic Technology
SN - 1546-542X
IS - 1
ER -