Speaker
Aji Alexander
(Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic)
Description
Redox chemistry on perovskite surfaces attracts attention due to these materials’ promising catalytic properties and the presence of ferroelectricity in many perovskites. In this study, STM and XPS have been used for investigating the interaction of cobalt with the $KTaO_3(001)$ surface. In UHV conditions, the freshly cleaved $KTaO_3$ surface was exposed to water vapor prior to cobalt deposition for intrinsic surface polarity compensation and to create a uniform (2x1) reconstruction. Interaction of cobalt with such surfaces was studied under oxidizing and reducing conditions and as a function of the temperature. The stability of the cobalt in its metallic, oxide, and hydroxide phases was studied and the cluster size was evaluated.
Primary authors
Aji Alexander
(Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic)
Dr
Jesús Redondo
(Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic)
Viktor Johánek
(Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic)
Prof.
Josef Mysliveček
(Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic)
Martin Setvin
(Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic)
