Fig. 1: The crystal structure of synthesized 2D ε-Fe2O3.
From: Stable antivortices in multiferroic ε-Fe2O3 with the coalescence of misaligned grains
a Crystalline model of ε-Fe2O3 unit cell. ε-Fe2O3 exhibits an orthorhombic structure, featuring three octahedral sites (FeA, FeB, and FeC) and one tetrahedral site (FeD). b Optical micrograph image of truncated triangular ε-Fe2O3 nanosheets on mica. Color-coded phase map (c) and inverse pole figure map along the out-of-plane Z direction (IPF-Z) (d) and in-plane X direction (IPF-X) (e) obtained through electron backscatter diffraction characterization. The color-coded legend is visible on the lower right corner of the map. High-resolution TEM images at the two long edges (f, g), one vertex (h), and center (i) of the nanosheet. The corresponding positions are labeled I, II, III, and IV in (c). Inset: Corresponding SAED in (f–h) and fast Fourier transformation pattern in (i) along the [001] zone axis of ε-Fe2O3. The vector g (020) indicates the direction of the crystallographic b-axis.
