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

研究成果: Article査読

13 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号09MA01
ジャーナルJapanese Journal of Applied Physics
49
9 PART 2
DOI
出版ステータスPublished - 2010 9
外部発表はい

ASJC Scopus subject areas

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

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