Epitaxial Growth of (1 1 1)-Oriented Spinel CoCr₂O₄/Al₂O₃ Heterostructures
Liu, Xiaoran · Choudhury, D. · Cao, Yanwei · Middey, S. · Kareev, M. · Meyers, D. · Kim, J. -W. · Ryan, P. · Chakhalian, J.
Original · EN
High quality (1 1 1)-oriented CoCr₂O₄/Al₂O₃ heterostructures were synthesized on the sapphire (0 0 0 1) single crystal substrates in a layer-by-layer mode. The structural properties are demonstrated by in-situ reflection high energy electron diffraction, atomic force microscopy, X-ray reflectivity and X-ray diffraction. X-ray photoemission spectroscopy confirms that the films possess the proper chemical stoichiometry. This work offers a pathway to fabricating spinel type artificial quasi-two-dimensional frustrated lattices by means of geometrical engineering.
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