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Molecular Engineering for Single-Chain-Magnet Behavior in a One-Dimensional Dysprosium–Nitronyl Nitroxide Compound

Authors

  • Lapo Bogani,

    1. Department of Chemistry and INSTM Research Unit, Università di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy, Fax: (+39) 055-457-3372
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  • Claudio Sangregorio Dr.,

    1. Department of Chemistry and INSTM Research Unit, Università di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy, Fax: (+39) 055-457-3372
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  • Roberta Sessoli Prof.,

    1. Department of Chemistry and INSTM Research Unit, Università di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy, Fax: (+39) 055-457-3372
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  • Dante Gatteschi Prof.

    1. Department of Chemistry and INSTM Research Unit, Università di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy, Fax: (+39) 055-457-3372
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  • This work was financially supported by the Human Potential Program RTN-QUEMOLNA (FP6-504880), the Italian MIUR (FIRB and PRIN projects), and the German DFG (SPP1137). We acknowledge Prof. A. Rettori, Dr. M. G. Pini, and Prof. C. Benelli for many stimulating discussions and Dr. P. Rosa for his assistance in ac magnetic measurements.

Abstract

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Einkettenmagnete: Ein rationaler Ansatz zur Verringerung magnetischer Dipolwechselwirkungen führte zur Kettenverbindung [Dy(hfac)3{NIT(C6H4OPh)}] (siehe Struktur; NIT(R): 2-(4′-R)-4,4,5,5-Tetramethylimidazolin-1-oxyl-3-oxid), dem ersten Einkettenmagnet auf Seltenerdmetallbasis. Kennzeichen der Verbindung sind eine langsame Relaxation, ein dynamischer Crossover aufgrund von Finite-Size-Effekten und ihr statisches magnetisches Verhalten.

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