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MM: Fachverband Metall- und Materialphysik

MM 35: Interfaces

MM 35.2: Vortrag

Mittwoch, 14. März 2018, 12:00–12:15, H 0107

Vacancy behaviour at FePt/MgO interface — •Petr Sestak^1,2, Miroslav Cerny^1,2, and Mojmir Sob^1,2,3 — 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.