Competition of defect ordering and site disproportionation in strained LaCoO3 on SrTiO3 (001)

Shape transitions of epitaxial islands during strained layer growth: anatase TiO2(001) on SrTiO3(001).

Extended annealing in UHV causes the surface region of SrTiO3(001) to become enriched with TiO2, resulting in the formation of epitaxial islands of anatase TiO2(001). The islands are studied using UHV scanning electron microscopy (SEM), which reveals the changes in morphology during growth induced by misfit strain. Starting from a square island, two types of shape transition are observed. In th...

Studying Dynamics of Oxygen Vacancy Ordering in Epitaxial LaCoO3 / SrTiO3 Superlattice with Real-Time Observation

Oxygen vacancies in perovskite oxides are of great interest both from fundamental viewpoint due to their effect on electronic and magnetic properties of oxides – and from applications viewpoint due to their importance for solid oxide fuel cells. In the latter case, understanding the dynamic behavior of vacancies is crucial. Oxygen vacancy (Vo) ordering can substantially affect local structure a...

Phase transitions and domain stabilities in biaxially strained (001) SrTiO3 epitaxial thin films

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Voltage-controlled ferromagnetism and magnetoresistance in LaCoO3/SrTiO3 heterostructures

Defect microstructures in epitaxial PbZr0.2Ti0.8O3 films grown on (001) SrTiO3 by pulsed laser deposition

Transmission electron microscopy has been used to investigate the character and distribution of the microstructural features in epitaxial (001) ferroelectric PbZr0.2Ti0.8O3 films grown on (001) SrTiO3 substrates by pulsed laser deposition. The TEM observations revealed that the films were predominantly c-oriented with embedded a1and a2-oriented domains lying on {101} planes. The substrate/film ...