Berlin 2018 – scientific programme
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MM: Fachverband Metall- und Materialphysik
MM 35: Interfaces
MM 35.2: Talk
Wednesday, March 14, 2018, 12:00–12:15, H 0107
Vacancy behaviour at FePt/MgO interface — •Petr Sestak1,2, Miroslav Cerny1,2, and Mojmir Sob1,2,3 — 1Institute of Physics of Mater., Academy of Sci. of CZ — 2Central European Institute of Technology, Brno, CZ — 3Faculty of Science, Masaryk University, Brno, CZ
Interfaces between two phases represent important parts of material structure. They have a significant effect on mechanical and magnetic properties. In particular, they can attract material defects like vacancies or dislocations. Moreover, vacancies located at interfaces can also serve as a place where impurities segregate. In our study we present ab initio simulations of formation of vacancies at the FePt/MgO interface. We analyze vacancy formation energy as a function of distance from the interface, the effect of vacancies on magnetic and mechanic properties and interaction between vacancies close to the interface.