Low-Temperature Magnetic Force Microscopy on Single Molecule Magnet-Based Microarrays.
The magnetic properties of some single molecule magnets (SMM) on surfaces can be strongly modified by the molecular packing in nanometric films/aggregates or by interactions with the substrate, which affect the molecular orientation and geometry. Detailed investigations of the magnetism of thin SMM films and nanostructures are necessary for the development of spin-based molecular devices, however this task is challenged by the limited sensitivity of laboratory-based magnetometric techniques and often requires access to synchrotron light sources to perform surface sensitive X-ray magnetic circular dichroism (XMCD) investigations. Here we show that low-temperature magnetic force microscopy is an alternative powerful laboratory tool able to extract the field dependence of the magnetization and to identify areas of in-plane and perpendicular magnetic anisotropy in microarrays of the SMM terbium(III) bis-phthalocyaninato (TbPc2) neutral complex grown as nanosized films on SiO2and perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA), and this is in agreement with data extracted from nonlocal XMCD measurements performed on homogeneous TbPc2/PTCDA films.
Laboratory for Molecular Magnetism (LA.M.M.), Department of Chemistry "Ugo Schiff", Università degli Studi di Firenze via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy.|INSTM Research Unit of Firenze , via della Lastruccia 3, I-50019 Sesto Fiorentino, Italy.
Michele
0000-0002-6018-5284
M
Serri
Laboratory for Molecular Magnetism (LA.M.M.), Department of Chemistry "Ugo Schiff", Università degli Studi di Firenze via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy.|INSTM Research Unit of Firenze , via della Lastruccia 3, I-50019 Sesto Fiorentino, Italy.
Matteo
0000-0001-7549-2124
M
Mannini
Laboratory for Molecular Magnetism (LA.M.M.), Department of Chemistry "Ugo Schiff", Università degli Studi di Firenze via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy.|INSTM Research Unit of Firenze , via della Lastruccia 3, I-50019 Sesto Fiorentino, Italy.
Lorenzo
L
Poggini
European Synchrotron Radiation Facility , 71 Av. Martyrs, F-38043 Grenoble 9, France.
Emilio
E
Vélez-Fort
Laboratory for Molecular Magnetism (LA.M.M.), Department of Chemistry "Ugo Schiff", Università degli Studi di Firenze via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy.|INSTM Research Unit of Firenze , via della Lastruccia 3, I-50019 Sesto Fiorentino, Italy.
Brunetto
B
Cortigiani
Institut de Mineralogie, de Physique des Materiaux et de Cosmochimie, UMR 7590, CNRS, UPMC, IRD, MNHN , F-75005 Paris, France.|Synchrotron SOLEIL, L'Orme des Merisiers , Saint-Aubin-BP 48, F-91192 Gif-sur-Yvette, France.
Philippe
P
Sainctavit
Laboratory for Molecular Magnetism (LA.M.M.), Department of Chemistry "Ugo Schiff", Università degli Studi di Firenze via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy.|INSTM Research Unit of Firenze , via della Lastruccia 3, I-50019 Sesto Fiorentino, Italy.
Donella
D
Rovai
Laboratory for Molecular Magnetism (LA.M.M.), Department of Chemistry "Ugo Schiff", Università degli Studi di Firenze via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy.|INSTM Research Unit of Firenze , via della Lastruccia 3, I-50019 Sesto Fiorentino, Italy.
Andrea
A
Caneschi
Laboratory for Molecular Magnetism (LA.M.M.), Department of Chemistry "Ugo Schiff", Università degli Studi di Firenze via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy.|INSTM Research Unit of Firenze , via della Lastruccia 3, I-50019 Sesto Fiorentino, Italy.
Roberta
0000-0003-3783-2700
R
Sessoli
Magnetic force microscopy; dipolar field; magnetic anisotropy; molecular magnetism; patterning; terbium double decker