Fe3O4(001) films on Fe(001) - termination and reconstruction of iron rich surfaces
N. Spiridis, J. Barbasz, Z. Lodziana, and J. Korecki
TL;DR
This study investigates the atomic structure and surface reconstruction of Fe3O4(001) films on Fe(001), revealing a specific Fe ion dimer termination through combined experimental and computational methods.
Contribution
It provides a detailed atomic-scale model of the Fe3O4(001) surface reconstruction on Fe(001), combining STM imaging and DFT calculations.
Findings
Reconstructed surface exhibits (sqrt2xsqrt2)R45o pattern.
Surface terminated with Fe ion dimers on the octahedral layer.
High-quality, impurity-free epitaxial Fe3O4(001) films achieved.
Abstract
High-quality and impurity-free magnetite surfaces with (sqrt2xsqrt2)R45o reconstruction have been obtained for the Fe3O4(001) epitaxial films deposited on Fe(001). Based on atomically resolved STM images for both negative and positive sample polarity and Density Functional Theory calculations, a model of the magnetite (001) surface terminated with Fe ions forming dimers on the reconstructed (sqrt2xsqrt2)R45o octahedral iron layer is proposed.
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