Electric Field‐Induced Oxidation of Ferromagnetic/Ferroelectric Interfaces. (23rd August 2013)

• Record Type: Journal Article
• Authors: Couet, Sebastien; Bisht, Manisha; Trekels, Maarten; Menghini, Mariela; Petermann, Claire; Van Bael, Margriet J.; Locquet, Jean‐Pierre; Rüffer, Rudolf; Vantomme, André; Temst, Kristiaan
• Is Part Of: Advanced functional materials. Volume 24:Number 1(2014)
• Page Start: 71
• Page End: 76
• Publication Date: 2013-08-23
• Subjects: Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.201301160
• Languages: English
• ISSNs: 1616-301X

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>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/BaTiO₃ and Fe/LiNbO₃ 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.</p> </abstract>