Origin of Long-Range Ferromagnetic Ordering in Metal--Organic Frameworks with Antiferromagnetic Dimeric-Cu(II) Building Units.
Even though metal-organic frameworks (MOFs) derived from antiferromagnetic dimeric-Cu(II) building units and nonmagnetic molecular linkers are known to exhibit unexpected ferromagnetic behavior, a comprehensive understanding of the underlying mechanism remains elusive. Using a combined theoretical a...
| Publicado en: | Journal of the American Chemical Society Vol. 134; no. 41; pp. 17286 - 17291 |
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| Autores principales: | , , , , , , , , , , , , , |
| Formato: | Artículo |
| Publicado: |
American Chemical Society
10/17/2012
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=82765681&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 82765681 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 10/17/2012 vid: 134 iid: 41 pid: 997 pub: American Chemical Society artinfo: ui: 82765681 10.1021/ja3077654 ppf: 17286 ppct: 5 formats: tig: atl: Origin of Long-Range Ferromagnetic Ordering in Metal--Organic Frameworks with Antiferromagnetic Dimeric-Cu(II) Building Units. aug: au: Lei Shen Shuo-Wang Yang Shengchang Xiang Tao Liu Bangchuan Zhao Man-Fai Ng Jörg Göettlicher Jiabao Yi Sean Li Lan Wang Jun Ding Banglin Chen Su-Huai Wei Yuan Ping Feng affil: Department of Physics, 2 Science Drive 3, National University of Singapore, Singapore 117542, Singapore Institute of High Performance Computing, Agency for Science, Technology and Research, 1 Fusionopolis Way, #16-16 Connexis, Singapore 138632, Singapore Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-1640, United States Institute for Synchrotron Radiation, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore Institute of Solid State Physics, Chinese Academy of Sciences, Shushan Lake Road 350# Hefei, Anhui, China 230031 Department of Materials Science and Engineering, National University of Singapore, Singapore 117576, Singapore Schools of Materials Science and Engineering, University of New South Wales, 2052 New South Wales, Australia National Renewable Energy Laboratory, Golden, Colorado 80401-3393, United States su: Ferromagnetic materials Molecular structure of metal-organic frameworks Antiferromagnetism Electromagnetic induction Cathode rays Magnetic domain Copper sug: subj: Ferromagnetic materials Molecular structure of metal-organic frameworks Antiferromagnetism Electromagnetic induction Cathode rays Magnetic domain Copper ab: Even though metal-organic frameworks (MOFs) derived from antiferromagnetic dimeric-Cu(II) building units and nonmagnetic molecular linkers are known to exhibit unexpected ferromagnetic behavior, a comprehensive understanding of the underlying mechanism remains elusive. Using a combined theoretical and experimental approach, here we reveal the origin of the long-range ferromagnetic coupling in a series of MOFs, constructed from antiferromagnetic dimeric-Cu(II) building blocks. Our studies show that the strong localization of copper vacancy states favors spontaneous spin polarization and formation of local moment. These copper vacancy-induced moments are coupled via the itinerant electrons in the conjugated aromatic linkers to establish a long-range ferromagnetic ordering. The proposed mechanism is supported by direct experimental evidence of copper vacancies and the magnetic hysteresis (M-H) loops. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2012 holdings: @attributes: islocal: N |
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