Journal of Applied Physics
| Autor: | M. Shultz, Lei Chen, Irinel Chiorescu, H. C. Dorn, Wolfgang Wernsdorfer, C.S. Hellberg, E. E. Carpenter |
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| Přispěvatelé: | Circuits électroniques quantiques Alpes (QuantECA), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), National High Magnetic Field Laboratory (NHMFL), FSU, Chemistry, Virginia Tech. Department of Chemistry, Florida State University. Department of Physics, National High Magnetic Field Laboratory, Virginia Commonwealth University. Department of Chemistry, Naval Research Laboratory (U.S.). Center for Computational Materials Science, Institut Neel, associe a l’UJF, CNRS |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Josephson junctions
Spin transition FOS: Physical sciences Magnetic susceptibilities General Physics and Astronomy 02 engineering and technology 010402 general chemistry 01 natural sciences Molecular physics law.invention Ion Superconductivity (cond-mat.supr-con) Paramagnetism Magnetic resonance imaging law Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Molecule Quantum Physics [PHYS]Physics [physics] Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Superconductivity Superconducting quantum interference devices Charge (physics) 021001 nanoscience & nanotechnology 0104 chemical sciences Magnetic field SQUID Magnetic fields 0210 nano-technology |
| Zdroj: | Journal of Applied Physics Journal of Applied Physics, American Institute of Physics, 2011, 109 (7), pp.07B101. ⟨10.1063/1.3536514⟩ |
| ISSN: | 0021-8979 1089-7550 |
| DOI: | 10.1063/1.3536514⟩ |
| Popis: | We present a magnetic study of the Gd3N@C-80 molecule, consisting of a Gd-trimer via a nitrogen atom, encapsulated in a C-80 cage. This molecular system can be an efficient contrast agent for magnetic resonance imaging (MRI) applications. We used a low-temperature technique able to detect small magnetic signals by placing the sample in the vicinity of an on-chip SQUID. The technique implemented at the National High Magnetic Field Laboratory has the particularity of being able to operate in high magnetic fields of up to 7 T. The Gd3N@C80 shows a paramagnetic behavior and we find a spin transition of the Gd3N structure at 1.2 K. We perform quantum mechanical simulations, which indicate that one of the Gd ions changes from a S-8(7/2) state (L-0, S-7/2) to a F-7(6) state (L-S-3, J-6), likely due to a charge transfer between the C-80 cage and the ion. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3536514] National Science Foundation (U.S.) - NSF Cooperative Agreement Grant No. DMR-0654118 National Science Foundation (U.S.) - NSF-CAREER Grant No. DMR-0645408 Alfred P. Sloan Foundation ANRPNANO - MolNanoSpin ANR-08-NANO-002 ERC Advanced Grant No. MolNanoSpin 226558 |
| Databáze: | OpenAIRE |
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