Published September 9, 2013 | Version v1
Journal article Metadata-only

Epitaxial growth of (111)-oriented BaTiO3/SrTiO3 perovskite superlattices on Pt(111)/Ti/Al2O3(0001) substrates

Creators

  • 1. Department of Materials, Physics and Energy Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 (Japan)
  • 2. Green Mobility Collaborative Research Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 (Japan)
  • 3. EcoTopia Science Institute, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 (Japan)

Description

Symmetric BaTiO3/SrTiO3 (BTO/STO) superlattices (SLs) were epitaxially grown on Pt(111)/Ti/Al2O3(0001) substrates with various modulation periods (Λ = 4.8 − 48 nm) using double ion beam sputter deposition. The BTO/STO SLs exhibit high (111) orientation with two in-plane orientation variants related by a 180° rotation along the [111]Pt axis. The BTO layer is under an in-plane compressive state, whereas the STO layer is under an in-plane tensile state due to the effect of lattice mismatch. A remarkable enhancement of dielectric constant is observed for the SL with relatively small modulation period, which is attributed to both the interlayer biaxial strain effect and the Maxwell-Wagner effect

Additional details

Identifiers

DOI
10.1063/1.4820780;

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
103
Journal Issue
11
Journal Page Range
p. 112902-112902.4
ISSN
0003-6951
CODEN
APPLAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
45039020
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ALUMINIUM OXIDES; BARIUM COMPOUNDS; COMPRESSION STRENGTH; CRYSTAL DEFECTS; DEPOSITION; DIELECTRIC MATERIALS; ION BEAMS; LAYERS; MODULATION; PERMITTIVITY; PEROVSKITE; STRAINS; STRONTIUM TITANATES; SUBSTRATES; SUPERLATTICES; SYMMETRY; TENSILE PROPERTIES; THIN FILMS; VAPOR PHASE EPITAXY
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; ALUMINIUM COMPOUNDS; BEAMS; CHALCOGENIDES; CRYSTAL GROWTH METHODS; CRYSTAL STRUCTURE; DIELECTRIC PROPERTIES; ELECTRICAL PROPERTIES; EPITAXY; FILMS; MATERIALS; MECHANICAL PROPERTIES; MINERALS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PEROVSKITES; PHYSICAL PROPERTIES; STRONTIUM COMPOUNDS; TITANATES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
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