Engineered interfaces of artificial perovskite oxide superlattices via nanosheet deposition process

Bao Wen Li; Minoru Osada; Tadashi C. Ozawa; Yasuo Ebina; Kosho Akatsuka; Renzhi Ma; Hiroshi Funakubo; Takayoshi Sasaki

doi:10.1021/nn102144s

Engineered interfaces of artificial perovskite oxide superlattices via nanosheet deposition process

Bao Wen Li, Minoru Osada^*, Tadashi C. Ozawa, Yasuo Ebina, Kosho Akatsuka, Renzhi Ma, Hiroshi Funakubo, Takayoshi Sasaki

^*Corresponding author for this work

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

121 Citations (Scopus)

Abstract

Combining different materials into desired superlattice structures can produce new electronic states at the interface and the opportunity to create artificial materials with novel properties. Here we introduce a new, rather unexpected, and yet simple way to such a superlattice assembly of perovskite oxides: in the Dion-Jacobson phase, a model system of layered perovskites, high-quality bicolor perovskite superlattices (LaNb₂O ₇)_nL(Ca₂Nb₃O₁₀) _nC are successfully fabricated by a layer-by-layer assembly using two different perovskite nanosheets (LaNb₂O₇ and Ca ₂Nb₃O₁₀) as a building block. The artificially fabricated (LaNb₂O₇/Ca₂Nb₃O ₁₀) superlattices are structurally unique, which is not feasible to create in the bulk form. By such an artificial structuring, we found that (LaNb₂O₇/Ca₂Nb₃O₁₀) superlattices possess a new form of interface coupling, which gives rise to ferroelectricity.

Original language	English
Pages (from-to)	6673-6680
Number of pages	8
Journal	ACS Nano
Volume	4
Issue number	11
DOIs	https://doi.org/10.1021/nn102144s
Publication status	Published - 2010 Nov 23
Externally published	Yes

Keywords

Artificial superlattice
Ferroelectricity
Layer-by-layer assembly
Perovskite nanosheets

ASJC Scopus subject areas

Engineering(all)
Materials Science(all)
Physics and Astronomy(all)

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10.1021/nn102144s

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title = "Engineered interfaces of artificial perovskite oxide superlattices via nanosheet deposition process",

abstract = "Combining different materials into desired superlattice structures can produce new electronic states at the interface and the opportunity to create artificial materials with novel properties. Here we introduce a new, rather unexpected, and yet simple way to such a superlattice assembly of perovskite oxides: in the Dion-Jacobson phase, a model system of layered perovskites, high-quality bicolor perovskite superlattices (LaNb2O 7)nL(Ca2Nb3O10) nC are successfully fabricated by a layer-by-layer assembly using two different perovskite nanosheets (LaNb2O7 and Ca 2Nb3O10) as a building block. The artificially fabricated (LaNb2O7/Ca2Nb3O 10) superlattices are structurally unique, which is not feasible to create in the bulk form. By such an artificial structuring, we found that (LaNb2O7/Ca2Nb3O10) superlattices possess a new form of interface coupling, which gives rise to ferroelectricity.",

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author = "Li, {Bao Wen} and Minoru Osada and Ozawa, {Tadashi C.} and Yasuo Ebina and Kosho Akatsuka and Renzhi Ma and Hiroshi Funakubo and Takayoshi Sasaki",

year = "2010",

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doi = "10.1021/nn102144s",

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AU - Li, Bao Wen

AU - Osada, Minoru

AU - Ozawa, Tadashi C.

AU - Ebina, Yasuo

AU - Akatsuka, Kosho

AU - Ma, Renzhi

AU - Funakubo, Hiroshi

AU - Sasaki, Takayoshi

PY - 2010/11/23

Y1 - 2010/11/23

N2 - Combining different materials into desired superlattice structures can produce new electronic states at the interface and the opportunity to create artificial materials with novel properties. Here we introduce a new, rather unexpected, and yet simple way to such a superlattice assembly of perovskite oxides: in the Dion-Jacobson phase, a model system of layered perovskites, high-quality bicolor perovskite superlattices (LaNb2O 7)nL(Ca2Nb3O10) nC are successfully fabricated by a layer-by-layer assembly using two different perovskite nanosheets (LaNb2O7 and Ca 2Nb3O10) as a building block. The artificially fabricated (LaNb2O7/Ca2Nb3O 10) superlattices are structurally unique, which is not feasible to create in the bulk form. By such an artificial structuring, we found that (LaNb2O7/Ca2Nb3O10) superlattices possess a new form of interface coupling, which gives rise to ferroelectricity.

AB - Combining different materials into desired superlattice structures can produce new electronic states at the interface and the opportunity to create artificial materials with novel properties. Here we introduce a new, rather unexpected, and yet simple way to such a superlattice assembly of perovskite oxides: in the Dion-Jacobson phase, a model system of layered perovskites, high-quality bicolor perovskite superlattices (LaNb2O 7)nL(Ca2Nb3O10) nC are successfully fabricated by a layer-by-layer assembly using two different perovskite nanosheets (LaNb2O7 and Ca 2Nb3O10) as a building block. The artificially fabricated (LaNb2O7/Ca2Nb3O 10) superlattices are structurally unique, which is not feasible to create in the bulk form. By such an artificial structuring, we found that (LaNb2O7/Ca2Nb3O10) superlattices possess a new form of interface coupling, which gives rise to ferroelectricity.

KW - Artificial superlattice

KW - Ferroelectricity

KW - Layer-by-layer assembly

KW - Perovskite nanosheets

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Engineered interfaces of artificial perovskite oxide superlattices via nanosheet deposition process

Abstract

Keywords

ASJC Scopus subject areas

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