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DF: Fachverband Dielektrische Festkörper

DF 2: Multiferroics I (jointly with MA, DS, KR, TT)

DF 2.11: Vortrag

Montag, 26. März 2012, 12:30–12:45, EB 301

Ab initio study of the properties of BaTiO₃/Co-Pt alloy interface — •Konstantin Z. Rushchanskii, Stefan Blügel, and Marjana Ležaić — Peter Grünberg Institut, Forschungszentrum Jülich and JARA,52425 Jülich, Germany

Multiferroics are materials which exhibit more that one ferroic order parameter. They can be made of a single phase, where multiple ferroic order parameters co-exist simultaneously, or of composites, where different ferroic order parameters are combined in separate phases. Due to the limited number of known single phase multiferroics, most of which present multiple ordering only at low temperatures, engineering of composite junctions based on interfaces of magnetic and ferroelectric compounds are therefore of great scientific interest but are also promising due to their potential applications.

Cobalt-platinum alloys are known as compounds with a strong potential for applications in magnetic data storage, due to the strong exchange interactions and strong spin-orbit coupling (and, as a consequence, a large magnetocrystalline anisotropy energy). We present results of ab initio calculations based on density functional theory (DFT) of the magneto-electric coupling in cobalt-platinum alloys interfaced with BaTiO₃ ferroelectric.

We acknowledge the support by Helmholtz Young Investigators Group Program VH-NG-409.