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Electric Field‐Induced Oxidation of Ferromagnetic/Ferroelectric Interfaces
Author(s) -
Couet Sebastien,
Bisht Manisha,
Trekels Maarten,
Menghini Mariela,
Petermann Claire,
Van Bael Margriet J.,
Locquet JeanPierre,
Rüffer Rudolf,
Vantomme André,
Temst Kristiaan
Publication year - 2014
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201301160
Subject(s) - ferroelectricity , materials science , electric field , multiferroics , magnetism , coupling (piping) , interface (matter) , ferromagnetism , magneto , condensed matter physics , chemical physics , optoelectronics , dielectric , voltage , composite material , electrical engineering , physics , engineering , quantum mechanics , capillary number , capillary action
Composite multiferroics are a new class of material where magneto‐electric coupling is achieved by creating an interface between a ferromagnetic and a ferroelectric compound. The challenge of understanding the chemical and magnetic properties of such interface is a key to achieve good magneto‐electric coupling. The unique possibilities offered by isotope sensitive techniques are used to selectively investigate the interface's chemistry and magnetism in Fe/BaTiO 3 and Fe/LiNbO 3 systems during the application of an electric field. With a large enough electric field, a strong oxidation of Fe is triggered, which creates a magnetically dead interface. This leads to an irreversible decrease of the magneto‐electric coupling properties. Material parameters are identified that determine under which electric field the interface may be modified. The results are confirmed on the two systems and are expected to be widespread in this new class of hybrid material.