標題: Dynamic observation on the functional metal oxide conversion behaviors in Fe3O4/ZnO heterostructures
作者: Huang, Chih-Yang
Tai, Kuo-Lun
Huang, Chun-Wei
Tseng, Yi-Tang
Lo, Hung-Yang
Wu, Wen-Wei
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: In-situ TEM;Fe3O4/ZnO heterostructure;Atomic-scale;Unidirectional twin;Solid-state reaction
公開日期: 1-Mar-2020
摘要: We directly observed the atomic diffusion process of bilayered Fe/ZnO transforming into a Fe3O4/ZnO heterostructure. Significantly, we suggested a unique two-step route in which Fe diffused along [0001](znO) via boundaries of ZnO and then reacted along [(1) over bar2 (1) over bar0](ZnO). The specific orientation relationship of [0001(]ZnO)//[11 (1) over bar ]Fe3O4 could be precisely controlled. In addition, the formation of a ZnO/Fe3O4 heterostructure can be tuned in terms of reaction depth by controlling the annealing time. This study provided a novel nanofabricated method to produce oriented metal oxide heterostructures while visualizing the atomic mechanism of metal oxide formation, which allows for further investigation of promising devices. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.scriptamat.2019.10.035
http://hdl.handle.net/11536/153458
ISSN: 1359-6462
DOI: 10.1016/j.scriptamat.2019.10.035
期刊: SCRIPTA MATERIALIA
Volume: 177
起始頁: 192
結束頁: 197
Appears in Collections:Articles