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Structural evolution of epitaxial SrCoOx films near topotactic phase transition
Hyoungjeen Jeen, Ho Nyung Lee
Control of oxygen stoichiometry in complex oxides via topotactic phase transition is an interesting avenue to not only modifying the physical properties, but utilizing in many ener…
Epitaxial stabilization and phase instability of VO2 polymorphs
Shinbuhm Lee, Ilia N. Ivanov, Jong K. Keum +1
The VO2 polymorphs, i.e., VO2(A), VO2(B), VO2(M1) and VO2(R), have a wide spectrum of functionalities useful for many potential applications in information and energy technologies.…
Selective control of oxygen sublattice stability by epitaxial strain in Ruddlesden-Popper films
Tricia L. Meyer, Lu Jiang, Jaekwang Lee +8
Oxygen-defect control has long been considered an influential tuning knob for producing various property responses in complex oxide films. In addition to physical property changes,…
Stabilization of highly polar BiFeO-like structure: a new interface design route for enhanced ferroelectricity in artificial perovskite superlattices
Hongwei Wang, Jianguo Wen, Dean J. Miller +5
In ABO3 perovskites, oxygen octahedron rotations are common structural distortions that can promote large ferroelectricity in BiFeO3 with an R3c structure [1], but suppress ferroel…
Strain tuning of electronic structure in Bi4Ti3O12-LaCoO3 epitaxial thin films
Woo Seok Choi, Ho Nyung Lee
We investigated the crystal and electronic structures of ferroelectric Bi4Ti3O12 (BiT) single crystalline thin films site-specifically substituted with LaCoO3 (LCO). The epitaxial…