Large Spontaneous Polarization and Clear Hysteresis Loop of a Room-Temperature Hybrid Ferroelectric Based on Mixed-Halide BiI3Cl2 Polar Chains and Methylviologen Dication

TitreLarge Spontaneous Polarization and Clear Hysteresis Loop of a Room-Temperature Hybrid Ferroelectric Based on Mixed-Halide BiI3Cl2 Polar Chains and Methylviologen Dication
Type de publicationArticle de revue
AuteurLeblanc, Nicolas, Mercier, Nicolas , Zorina, Leokadiya, Simonov, Sergey, Auban-Senzier, Pascale, Pasquier, Claude
TypeArticle scientifique dans une revue à comité de lecture
Année2011
LangueAnglais
Date09/2011
Numéro38
Pagination14924-14927
Volume133
Titre de la revueJournal of the American Chemical Society
ISSN0002-7863
Résumé en anglais

The search for hybrid organic inorganic materials, which have the great advantage that they can be synthesized at moderate temperature (T 200 degrees C), remains a great challenge in the field of ferroelectrics. Here, a room-temperature ferroelectric material with interesting characteristics, (MV)[BiI3Cl2] (MV2+ = methylviologen), is reported. Its structure is based on polar inorganic chains resulting from a remarkable Cl/I segregation induced by methylviologen entities, which coincide with the fourfold polar axis of the tetragonal structure. Of great importance is that this room-temperature hybrid ferroelectric displays a clear electrical hysteresis loop with a large spontaneous polarization (15 mu C.cm(-2)).

URL de la noticehttp://okina.univ-angers.fr/publications/ua2652
DOI10.1021/ja206171s