Double-layer buffer template to grow commensurate epitaxial BaBiO3 thin films | Zendy

Han Gyeol Lee | Zendy; Yoonkoo Kim | Zendy; Sangwoon Hwang | Zendy; Gideok Kim | Zendy; Tae Dong Kang | Zendy; Minu Kim | Zendy; Miyoung Kim | Zendy; Tae Won Noh | Zendy

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Double-layer buffer template to grow commensurate epitaxial BaBiO3 thin films

Author(s) -

Han Gyeol Lee,

Yoonkoo Kim,

Sangwoon Hwang,

Gideok Kim,

Tae Dong Kang,

Minu Kim,

Miyoung Kim,

Tae Won Noh

Publication year - 2016

Publication title -

apl materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.571

H-Index - 60

ISSN - 2166-532X

DOI - 10.1063/1.4972133

Subject(s) - epitaxy , materials science , lattice constant , buffer (optical fiber) , lattice (music) , oxide , thin film , layer (electronics) , substrate (aquarium) , chemical engineering , crystallography , optoelectronics , nanotechnology , diffraction , metallurgy , optics , chemistry , computer science , telecommunications , oceanography , physics , geology , acoustics , engineering

We propose a BaCeO3/BaZrO3 double-layer buffer template, grown on a SrTiO3 substrate, for epitaxial growth of a target oxide film with large lattice constants of over 4.1 Å. Lattice mismatch from the substrate was mostly accommodated for by a BaZrO3 arbitrating layer. Having an ideal in-plane lattice structure, BaCeO3 served as the main-buffer to grow the target material. We demonstrated commensurate epitaxy of BaBiO3 (BBO, a = 4.371 Å) utilizing the new buffer template. Our results can be applied to heteroepitaxy and strain engineering of novel oxide materials of sizable lattice constants

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