A STEM study of twin defects in Fe3O4(111)/YZO(111)

Electron Microscopy and Analysis Group Conference 2013

Gilks, D.^1 ; Lari, L.^1,2 ; Matsuzaki, K.^3 ; Evans, R.^1 ; McKenna, K.^1 ; Susaki, T.^3 ; Lazarov, V.K.^1

Department of Physics, University of York, Heslington, YO10 5DD York, United Kingdom^1

York-JEOL Nanocentre, University of York, Heslington, YO10 5BR York, United Kingdom^2

Secure Materials Centre, Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan^3

关键词: Bonding configurations;    High-angle annular dark fields;    Stem imaging;    Superexchange interaction;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/522/1/012036/pdf
DOI  :  10.1088/1742-6596/522/1/012036

来源: IOP

【 摘 要 】

We observe twin defects on both the (111) and (11-2) planes of thin film Fe3O4using atomically resolved high angle annular dark field (HAADF) STEM imaging. These defects are significant for understanding the previously reported anomalous properties of Fe3O4films as they generate non-bulk bonding configurations leading to non-bulk superexchange interactions in these regions.