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Magnetic‐Instability‐Induced Giant Magnetoelectric Coupling
Author(s) -
Ravindran Ponniah,
Vidya Ravindran,
Eriksson Olle,
Fjellvåg Helmer
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200701889
Subject(s) - materials science , metamagnetism , magnetism , condensed matter physics , coupling (piping) , ferroelectricity , instability , inductive coupling , magnetization , optoelectronics , magnetic field , dielectric , physics , composite material , quantum mechanics , mechanics
Multifunctional materials such as mag netoelect rics can be used in novel device applications. Magnetism and ferroelectricity coexist in some materials, but the coupling between them is very small to use them in devices. Using density function al calculations we have shown that BiCoO 3 (see figure) has large magneto‐electric coupling owing to metamagnetism arising from a spin state transition of cobalt ion.