Ferroelectric Switching in Multiferroic Magnetite (Fe3O4) Thin Films
Journal article published in 2009 by
Marin Alexe 
,
Michael Ziese,
Dietrich Hesse,
Pablo Esquinazi,
Kunihiko Yamauchi ,
Tetsuya Fukushima,
Silvia Picozzi,
Ulrich Gösele,
Ulrich Gösele
,
Michael Ziese,
Dietrich Hesse,
Pablo Esquinazi,
Kunihiko Yamauchi ,
Tetsuya Fukushima,
Silvia Picozzi,
Ulrich Gösele,
Ulrich Gösele
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Abstract
Real-time ferroelectric polarization switching in magnetite epitaxial thin films is reported, proving that magnetite is not only historically the first material showing magnetism and correlated electron properties, but also that it is ferroelectric with a value of the ferroelectric polarization approaching that of well-known ferroelectric materials such as BaTiO3.