Epitaxial Growth of (1 1 1)-Oriented Spinel CoCr${}_2$O${}_4$/Al${}_2$O${}_3$ Heterostructures

Abstract

High quality (1 1 1)-oriented CoCr${}_2$O${}_4$/Al${}_2$O${}_3$ 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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Cited by in corpus (2)

• Geometrical lattice engineering of complex oxide heterostructures: a designer approach to emergent quantum states
• Quantum spin liquids by geometric lattice design