Dresden 2006 – wissenschaftliches Programm
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SYMM: Multi-ferroic materials
SYMM 1: Multiferroic Materials - Theory
SYMM 1.1: Hauptvortrag
Dienstag, 28. März 2006, 14:30–15:00, HSZ 04
Magnetoelectric Multiferroics from First Principles — •C. Ederer and N. Spaldin — Materials Department, University of California, Santa Barbara
The combination of magnetic and ferroelectric properties in a single material is appealing both because of the interesting coupling effects that emerge as well as due to a variety of technological applications that can be envisaged. Computational methods based on density functional theory have made invaluable contributions to the present understanding of such magnetoelectric multiferroics. In this talk I will present an overview over current research activities in the field of multiferroic materials and illustrate how first principles methods can be used in various ways to investigate these systems. In particular, I will discuss the application of first principles methods to explain the confusing and sometimes contradictory experimental observations for the room-temperature multiferroic BiFeO3, to predict novel effects like electric-field induced switching of magnetic order parameters in BaNiF4, and to design new multiferroic materials with improved properties.