Atomically Resolved Observations of Antiphase Domain Boundaries in Epitaxial Fe3O4 Films on MgO(001) by Scanning Tunneling Microscopy

作者：Ikeuchi Akira^*; Hiura Satoshi; Mizuno Taichi; Kaji Eisaku; Subagyo Agus; Sueoka Kazuhisa

来源：Japanese Journal of Applied Physics, 2012, 51(8): 08KB02.

DOI：10.1143/JJAP.51.08KB02

We have studied the surface atomic configurations around antiphase domain boundaries (APBs) in epitaxial magnetite (Fe3O4) thin films on MgO(001) by scanning tunneling microscopy (STM). The observed surface of the Fe3O4 films is the B-plane terminating surface with the (root 2 x root 2)R45 degrees reconstruction. Several variations of APBs are observed by STM at atomic resolution. The observed APBs are categorized into a APBs labeled by three different phase shift vectors: in-plane 1/4[110], in-plane 1/2[100], and out-of-plane 1/4[101]. We discussed how these APBs appear on the surface. The proportions of the APBs with 1/4[110], 1/2[100], and 1/4[101] shifts are about 38, 1, and 61%, respectively, in our experiment.

• 出版日期2012-8