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다차원 탄소재료 연구단
다차원 탄소재료 연구단
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Atomic engineering of metastable BeO6 octahedra in a rocksalt framework

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Title
Atomic engineering of metastable BeO6 octahedra in a rocksalt framework
Author(s)
Lee W.C.; Kim S.; Eric S. Larsen; Choi J.-H.; Baek S.-H.; Lee M.; Cho D.-Y.; Lee H.-K.; Hwang C.S.; Christopher W. Bielawski; Kim S.K.
Publication Date
2020-01
Journal
APPLIED SURFACE SCIENCE, v.501, no., pp.144280 -
Publisher
ELSEVIER SCIENCE BV
Abstract
© 2019 Elsevier B.V.An atomic structure is widely recognized as the key that determines the physical properties of a material. A critical challenge to engineer the atomic structure is that many useful crystals are metastable under ambient conditions and difficult to realize. Here, it is demonstrated that highly metastable atomic arrangements can be synthesized in the isostructural matrix via atomic layer deposition. Studying highly metastable BeO6 octahedra in rocksalt MgO as a model system, it is experimentally and theoretically shown that the single-phase BexMg1-xO thin films adopt rocksalt structure over wurtzite for the composition range x < 0.21. The single-phase rocksalt films exhibit almost doubled dielectric constants with the presence of BeO6 octahedra. Such atomic environment engineering may create intriguing properties that have not been realized in the constituent materials. This work provides excellent opportunities to explore unprecedented materials properties via engineering metastable atomic arrangements using the isostructural matrix approach
URI
https://pr.ibs.re.kr/handle/8788114/7046
ISSN
0169-4332
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > Journal Papers (저널논문)
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