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Abstract

Metal oxide structures, devices, and fabrication methods are provided. In addition, applications of such structures, devices, and methods are provided. In some embodiments, an oxide material can include a substrate and a single-crystal epitaxial layer of an oxide composition disposed on a surface of the substrate, where the oxide composition is represented by ABO₂ such that A is a lithium cation, B is a cation selected from the group consisting of trivalent transition metal cations, trivalent lanthanide cations, trivalent actinide cations, trivalent p-block cations, and combinations thereof, and O is an oxygen anion. The unit cell of the crystal structure of the oxide composition can be characterized by first layer of a plane of lithium cations and a second layer of a plurality of edge-sharing octahedra having a B cation positioned in a center of each octahedron and an oxygen anion at each corner of each octahedron. The first layer and the second layer of the unit cell are alternatingly stacked along one axis of the unit cell. Other aspects, features, and embodiments are also claimed and described.

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First Claim