Single-Molecule Magnets: Jahn-Teller Isomerism and the Origin of Two Magnetization Relaxation Processes in Mn12 Complexes

Inorganic Chemistry; 2001; 40(9); 2127-2146 New Mn12 single-molecule magnets (SMM's) with the composition [Mn12O12(O2CR)16(H2O)4] were prepared and structurally characterized. Complexes of this type can exhibit two out-of-phase ac magnetic susceptibility signals, one in the 4-7 K region and the...

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Hauptverfasser:	Aubin, Sheila M. J, Sun, Ziming, Eppley, Hilary J, Rumberger, Evan M, Guzei, Ilia A, Folting, Kirsten, Gantzel, Peter K, Rheingold, Arnold L, Christou, George, Hendrickson, David N
Format:	Artikel
Sprache:	eng
Schlagworte:	Physics - Disordered Systems and Neural Networks Physics - Materials Science Physics - Mesoscale and Nanoscale Physics Physics - Other Condensed Matter Physics - Quantum Gases Physics - Soft Condensed Matter Physics - Statistical Mechanics Physics - Strongly Correlated Electrons Physics - Superconductivity
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Zusammenfassung:	Inorganic Chemistry; 2001; 40(9); 2127-2146 New Mn12 single-molecule magnets (SMM's) with the composition [Mn12O12(O2CR)16(H2O)4] were prepared and structurally characterized. Complexes of this type can exhibit two out-of-phase ac magnetic susceptibility signals, one in the 4-7 K region and the other in the 2-3 K region. The origin of the two magnetization relaxation processes was systematically examined. The X-ray structures of two isomeric forms of a Mn12 SMM are given. One complex has an abnormal Jahn-Teller distortion axis. The magnetization hysteresis loops for the two isomers are quite different.
DOI:	10.48550/arxiv.cond-mat/0109380