0000000001299488
AUTHOR
Hongbo Liu
Multiferroics by Rational Design: Implementing Ferroelectricity in Molecule-Based Magnets
Multiferroics (MF) are materials that exhibit simultaneouslyseveral ferroic order parameters. Among the multiferroicmaterials, those combining antiferro- or ferroelectricity (FE)and antiferro-, ferri-, or ferromagnetism (FM) within thesame material are highly desirable: the coexistence of thepolar and magnetic orders paves the way towards four-levelmemories while their interactions through the magnetoelec-tric effect makes it possible to control the magnetization byelectric fields and hence to develop electronically tuneablemagnetic devices, which are an essential feature for spin-tronics.
High proton conduction in a chiral ferromagnetic metal-organic quartz-like framework.
A complex-as-ligand strategy to get a multifunctional molecular material led to a metal-organic framework with the formula (NH(4))(4)[MnCr(2)(ox)(6)]·4H(2)O. Single-crystal X-ray diffraction revealed that the anionic bimetallic coordination network adopts a chiral three-dimensional quartz-like architecture. It hosts ammonium cations and water molecules in functionalized channels. In addition to ferromagnetic ordering below T(C) = 3.0 K related to the host network, the material exhibits a very high proton conductivity of 1.1 × 10(-3) S cm(-1) at room temperature due to the guest molecules.
CCDC 863641: Experimental Crystal Structure Determination
Related Article: E.Pardo, C.Train, Hongbo Liu, L.-M.Chamoreau, B.Dkhil, K.Boubekeur, F.Lloret, K.Nakatani, H.Tokoro, S.Ohkoshi, M.Verdaguer|2012|Angew.Chem.,Int.Ed.|51|8356|doi:10.1002/anie.201202848
CCDC 869967: Experimental Crystal Structure Determination
Related Article: E.Pardo, C.Train, Hongbo Liu, L.-M.Chamoreau, B.Dkhil, K.Boubekeur, F.Lloret, K.Nakatani, H.Tokoro, S.Ohkoshi, M.Verdaguer|2012|Angew.Chem.,Int.Ed.|51|8356|doi:10.1002/anie.201202848
CCDC 826007: Experimental Crystal Structure Determination
Related Article: E.Pardo, C.Train, G.Gontard, K.Boubekeur, O.Fabelo, Hongbo Liu, B.Dkhil, F.Lloret, K.Nakagawa, H.Tokoro, S.Ohkoshi, M.Verdaguer|2011|J.Am.Chem.Soc.|133|15328|doi:10.1021/ja206917z