Coupling of single, double, and triple-decker metal-phthalocyanine complexes to ferromagnetic and antiferromagnetic substrates (Articolo in rivista)

Type
Label
  • Coupling of single, double, and triple-decker metal-phthalocyanine complexes to ferromagnetic and antiferromagnetic substrates (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.susc.2014.07.008 (literal)
Alternative label
  • Lodi Rizzini A.; Krull C.; Mugarza A.; Balashov T.; Nistor C.; Piquerel R.; Klyatskaya S.; Ruben M.; Sheverdyaeva P.M.; Moras P.; Carbone C.; Stamm C.; Miedema P.S.; Thakur P.K.; Sessi V.; Soares M.; Yakhou-Harris F.; Cezar J.C.; Stepanow S.; Gambardella P. (2014)
    Coupling of single, double, and triple-decker metal-phthalocyanine complexes to ferromagnetic and antiferromagnetic substrates
    in Surface science
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Lodi Rizzini A.; Krull C.; Mugarza A.; Balashov T.; Nistor C.; Piquerel R.; Klyatskaya S.; Ruben M.; Sheverdyaeva P.M.; Moras P.; Carbone C.; Stamm C.; Miedema P.S.; Thakur P.K.; Sessi V.; Soares M.; Yakhou-Harris F.; Cezar J.C.; Stepanow S.; Gambardella P. (literal)
Pagina inizio
  • 361 (literal)
Pagina fine
  • 374 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.sciencedirect.com/science/article/pii/S0039602814002003 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 630 (literal)
Rivista
Note
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Catalan Institute of Nanoscience and Nanotechnology (ICN2), UAB Campus, E-08193 Barcelona, Spain; Department of Materials, ETH Zürich, Hönggerbergring 64, CH-8093 Zürich, Switzerland; Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), D-76344 Eggenstein-Leopoldshafen, Germany; Institute de Physique et Chimie de Matériaux de Strasbourg (IPCMS), UMR 7504, CNRS-Université de Strasbourg, F-67034 Strasbourg, France; Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, 34012 Trieste, Italy; Debye Institute of Nanomaterials Science, Utrecht University, 3584 CA Utrecht, The Netherlands; European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble, France; Institució Catalana de Recerca i Estudis Avançats (ICREA), E-08010 Barcelona, Spain (literal)
Titolo
  • Coupling of single, double, and triple-decker metal-phthalocyanine complexes to ferromagnetic and antiferromagnetic substrates (literal)
Abstract
  • We report a survey of the magnetic properties of metal-organic complexes coupled to ferromagnetic and antiferromagnetic surfaces. Using element-resolved X-ray magnetic circular dichroism, we investigate the magnetism of single, double, and triple-decker phthalocyanines focusing on MnPc, TbPc2, and Tb2Pc3 deposited on Ni, Mn, and CoO thin films. Depending on the number of Pc ligands, we find that the metal ions within the molecules couple either parallel or antiparallel to a ferromagnetic substrate. Whereas single-decker complexes such as MnPc form a unique magnetic entity with ferromagnetic films, the intrinsic single molecule magnet properties of TbPc2 and Tb2Pc3 remain largely unaltered. TbPc2 deposited on perpendicularly magnetized Ni films exhibits enhanced magnetic stability compared to TbPc2 in molecular crystals, opposite to TbPc2 deposited on in-plane magnetized Ni. Depending on the competition between uniaxial anisotropy, superexchange, and Zeeman interaction, the magnetic moment of TbPc2 can be aligned parallel or antiparallel to that of the substrate by modulating the intensity of an external magnetic field. This occurs also for Tb2Pc3, but the substrate-induced exchange coupling in triple-decker molecules is found to be short-ranged, that is, limited to the Tb ion closer to the ferromagnetic surface. Finally, we discuss the conditions required to establish exchange bias between molecules and antiferromagnetic substrates. We show that TbPc2 deposited on antiferromagnetic Mn thin films exhibits both exchange bias and enhanced coercivity when field cooled parallel to the out-of-plane easy axis. However, exchange bias does not extend to all molecules on the surface. On oxide antiferromagnets such as CoO we find no evidence of exchange bias for either TbPc2 or MnPc (literal)
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