New Multiferroic Materials: Bi2FeMnO6

摘要: The term “ferroic” was introduced by Aizu in 1970, and presented a unified treatment of certain symmetry-dictated aspects ferroelectric, ferroelastic, ferromagnetic materials. Ferroelectric materials possess spontaneous polarization that is stable can be switched hysteretically an applied electric field; antiferroelectric ordered dipole moments cancel each other completely within crystallographic unit cell. Ferromagnetic magnetization swithched magnetic antiferromagnetic By the original definition, single-phase multiferroic material one possesses more than ‘ferroic’ properties: ferroelectricity, ferromagnetism or ferroelasticity. But classification multiferroics has been broadened to include antiferroic order. Multiferroic materials, which ferroelectricity magnetism coexist, control properties field or, contrast, switching electrical field, have attracted great deal interest. Now we classify into two parts: materials; layered composite heterostructures. most desirable situation would discover intrinsic at room temperature. However, BiFeO3 only known perovskite oxides exhibits both antiferromagnetism above Thus, it essential broaden searching for new candidates, resulted considerable interest on designed novel single phase