Creation of two-dimensional layered Zintl phase by dimensional manipulation of crystal structure
| Autor: | Youngkuk Kim, Kyu Hyong Lee, Sang Ho Oh, Dong Wook Kim, Hyun Yong Song, Seokhee Lee, Junseong Song, Sung Wng Kim, Zhen Wang, Jouhahn Lee, Jae-Yeol Hwang, Seung Youb Lee |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Multidisciplinary
Materials science Graphene Materials Science Rational design SciAdv r-articles Hexagonal boron nitride 02 engineering and technology Crystal structure 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Zintl phase Transition metal Polymorphism (materials science) law Chemical physics Atomic lattice 0210 nano-technology Research Articles Research Article |
| Zdroj: | Science Advances |
| ISSN: | 2375-2548 |
| Popis: | A 3D crystal structure can be transformed into a layered structure by dimensional manipulation, expanding the 2D material library. The discovery of new families, beyond graphene, of two-dimensional (2D) layered materials has always attracted great attention. However, it has been challenging to artificially develop layered materials with honeycomb atomic lattice structure composed of multicomponents such as hexagonal boron nitride. Here, through the dimensional manipulation of a crystal structure from sp3-hybridized 3D-ZnSb, we create an unprecedented layered structure of Zintl phase, which is constructed by the staking of sp2-hybridized honeycomb ZnSb layers. Using structural analysis combined with theoretical calculation, it is found that the 2D-ZnSb has a stable and robust layered structure. The bidimensional polymorphism is a previously unobserved phenomenon at ambient pressure in Zintl families and can be a common feature of transition metal pnictides. This dimensional manipulation of a crystal structure thus provides a rational design strategy to search for new 2D layered materials in various compounds, enabling unlimited expansion of 2D libraries and corresponding physical properties. |
| Databáze: | OpenAIRE |
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