Abstract :
[en] The most important types of non-collinear magnetic orders that are realizedin simple perovskite oxides are outlined in relation to multiferroicity. These ordersare classified and rationalized in terms of a mimimal spin Hamiltonian, based onwhich the notion of spin-driven ferroelectricity is illustrated. These concepts find di-rect application in reference materials such as BiFeO3,GdFeO3and TbMnO3whosemultiferroic properties are briefly reviewed.
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