A- and B-site modified perovskite nanosheets and their integrations into high-κ dielectric thin films

Minoru Osada; Takayoshi Sasaki

doi:10.1111/j.1744-7402.2011.00713.x

A- and B-site modified perovskite nanosheets and their integrations into high-κ dielectric thin films

Minoru Osada^*, Takayoshi Sasaki

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

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	https://doi.org/10.1111/j.1744-7402.2011.00713.x
Publication status	Published - 2012 Jan
Externally published	Yes

ASJC Scopus subject areas

Ceramics and Composites
Marketing
Materials Chemistry
Condensed Matter Physics

Access to Document

10.1111/j.1744-7402.2011.00713.x

Cite this

@article{1a3f2c505e924a2fa9f5ba4493125551,

title = "A- and B-site modified perovskite nanosheets and their integrations into high-κ dielectric thin films",

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.",

author = "Minoru Osada and Takayoshi Sasaki",

year = "2012",

month = jan,

doi = "10.1111/j.1744-7402.2011.00713.x",

language = "English",

volume = "9",

pages = "29--36",

journal = "International Journal of Applied Ceramic Technology",

issn = "1546-542X",

publisher = "Wiley-Blackwell",

number = "1",

}

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 -

A- and B-site modified perovskite nanosheets and their integrations into high-κ dielectric thin films

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this