Condensed-Matter Physics & Materials Science Seminar

"Anion-based approaches to engineering functionality in perovskite oxide heterostructures"

Presented by Steve May, Drexel University

Thursday, January 26, 2017, 1:30 pm — ISB Bldg. 734, Conf. Room 201 (upstairs)

Scientific interest in ABO3 perovskite oxides remains intense due to the wide range of physical behavior present in these materials. The ability to control the position, occupation, and composition of the anion site has recently emerged as a new route to tune properties in epitaxial perovskites. This talk will focus on recent and ongoing efforts aimed at developing anion-based approaches to tailor electronic, optical and magnetic properties in oxide heterostructures. First, I will discuss how the position of the oxygen anions can be controlled to stabilize non-bulk-like bond angles and lengths, thereby modifying electronic and magnetic behavior in manganite films and superlattices. In the second half of the talk, I will describe efforts focused on controlling the occupation and composition of the anion site, including reversible oxidation/reduction in thin La1/3Sr2/3FeO3-? films and topotactic fluorination reactions to realize oxyfluoride films

Hosted by: Mark Dean

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