Multiferroic behavior associated with an order-disorder hydrogen bonding transition in metal-organic frameworks (MOFs) with the perovskite ABX{sub 3} arhitecture.
Multiferroic behavior in perovskite-related metal-organic frameworks of general formula [(CH{sub 3}){sub 2}NH{sub 2}]M(HCOO){sub 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.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- NSF-DMR
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 966339
- Report Number(s):
- ANL/XSD/JA-65104; JACSAT; TRN: US200921%%368
- Journal Information:
- J. Am. Chem. Soc., Vol. 131, Issue 38 ; Sep. 30, 2009; ISSN 0002-7863
- Country of Publication:
- United States
- Language:
- ENGLISH
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