Multiferroic Behavior Associated with an Order−Disorder Hydrogen Bonding Transition in Metal−Organic Frameworks (MOFs) with the Perovskite ABX<sub>3</sub> Architecture
Prashant K. Jain(Florida State University), V. Ramachandran(Argonne National Laboratory), Ronald J. Clark(University of Cambridge), Haidong Zhou(Argonne National Laboratory), Brian H. Toby(Florida State University), Naresh S. Dalal(Argonne National Laboratory), Harold W. Kroto(National High Magnetic Field Laboratory), Anthony K. Cheetham(University of Cambridge)
Cited by 796
Abstract
Multiferroic behavior in perovskite-related metal-organic frameworks of general formula [(CH(3))(2)NH(2)]M(HCOO)(3), where M = Mn, Fe, Co, and Ni, is reported. All four compounds exhibit paraelectric-antiferroelectric phase transition behavior in the temperature range 160-185 K (Mn: 185 K, Fe: 160 K; Co: 165 K; Ni: 180 K); this is associated with an order-disorder transition involving the hydrogen bonded dimethylammonium cations. On further cooling, the compounds become canted weak ferromagnets below 40 K. This research opens up a new class of multiferroics in which the electrical ordering is achieved by means of hydrogen bonding.
Related Papers
No related papers found
Powered by citation graph analysis