A-site-modified perovskite nanosheets and their integration into high-κ dielectric thin films with a clean interface

Bao Wen Li, Minoru Osada, Tadashi C. Ozawa, Kosho Akatsuka, Yasuo Ebina, Renzi Ma, Kanta Ono, Hiroshi Funakubo, Takayoshi Sasaki

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We investigated dielectric properties of La1-xEu xNb2O7 perovskite nanosheets in order to study the effect of A-site modification on dielectric properties. Langmuir-Blodgett deposition was employed to fabricate multilayer nanofilms of perovskite nanosheets. In these nanosheets, A-site modification with Eu3+ ions improves the leakage current characteristics and, at the same time, reduces permittivity. The slight modification with Eu3+ ions in La0.95Nb 2O7 nanosheets causes a 50% reduction in εr value. We also discuss the high-κ properties of La 0.95Nb2O7 nanosheets by performing detailed investigations based on first-principles calculations and interfacial structures.

Original languageEnglish
Article number09MA01
JournalJapanese Journal of Applied Physics
Volume49
Issue number9 PART 2
DOIs
Publication statusPublished - 2010 Sep
Externally publishedYes

Fingerprint

Dielectric films
Nanosheets
Perovskite
Thin films
dielectric properties
thin films
Dielectric properties
ions
leakage
permittivity
Ions
Leakage currents
causes
Multilayers
Permittivity

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

A-site-modified perovskite nanosheets and their integration into high-κ dielectric thin films with a clean interface. / Li, Bao Wen; Osada, Minoru; Ozawa, Tadashi C.; Akatsuka, Kosho; Ebina, Yasuo; Ma, Renzi; Ono, Kanta; Funakubo, Hiroshi; Sasaki, Takayoshi.

In: Japanese Journal of Applied Physics, Vol. 49, No. 9 PART 2, 09MA01, 09.2010.

Research output: Contribution to journalArticle

Li, BW, Osada, M, Ozawa, TC, Akatsuka, K, Ebina, Y, Ma, R, Ono, K, Funakubo, H & Sasaki, T 2010, 'A-site-modified perovskite nanosheets and their integration into high-κ dielectric thin films with a clean interface', Japanese Journal of Applied Physics, vol. 49, no. 9 PART 2, 09MA01. https://doi.org/10.1143/JJAP.49.09MA01
Li, Bao Wen ; Osada, Minoru ; Ozawa, Tadashi C. ; Akatsuka, Kosho ; Ebina, Yasuo ; Ma, Renzi ; Ono, Kanta ; Funakubo, Hiroshi ; Sasaki, Takayoshi. / A-site-modified perovskite nanosheets and their integration into high-κ dielectric thin films with a clean interface. In: Japanese Journal of Applied Physics. 2010 ; Vol. 49, No. 9 PART 2.
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AU - Ebina, Yasuo

AU - Ma, Renzi

AU - Ono, Kanta

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