Study on Ca Segregation toward an Epitaxial Interface between Bismuth Ferrite and Strontium Titanate

• Published in: ACS applied materials & interfaces Vol. 12; no. 10; pp. 12264 - 12274
• Main Authors: Haselmann, Ulrich, Haberfehlner, Georg, Pei, Weijie, Popov, Maxim N, Romaner, Lorenz, Knez, Daniel, Chen, Jian, Ghasemi, Arsham, He, Yunbin, Kothleitner, Gerald, Zhang, Zaoli
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 11.03.2020
• Subjects: bismuth; calcium; density functional theory; energy; ferrimagnetic materials; films (materials); iron; oxidation; oxides; oxygen; strontium; transmission electron microscopy; X-ray photoelectron spectroscopy; atomic-resolution TEM; BiFeO3; oxygen vacancy; oxide heterostructure interface; EELS and EDS; density functional theory (DFT); segregation

Segregation is a crucial phenomenon, which has to be considered in functional material design. Segregation processes in perovskite oxides have been the subject of ongoing scientific interest, since they can lead to a modification of properties and a loss of functionality. Many studies in oxide thin...