TY - JOUR
T1 - A-site-modified perovskite nanosheets and their integration into high-κ dielectric thin films with a clean interface
AU - Li, Bao Wen
AU - Osada, Minoru
AU - Ozawa, Tadashi C.
AU - Akatsuka, Kosho
AU - Ebina, Yasuo
AU - Ma, Renzi
AU - Ono, Kanta
AU - Funakubo, Hiroshi
AU - Sasaki, Takayoshi
PY - 2010/9
Y1 - 2010/9
N2 - 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.
AB - 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.
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U2 - 10.1143/JJAP.49.09MA01
DO - 10.1143/JJAP.49.09MA01
M3 - Article
AN - SCOPUS:78049333566
SN - 0021-4922
VL - 49
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - 9 PART 2
M1 - 09MA01
ER -