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Abstract:

We have prepared and structurally characterized a new member of the butterfly-like {CoIII2DyIII2} single-molecule magnets (SMMs) through further CoIIIdecoration, with the formula [CoIII4DyIII2(OH)2(teaH)2(tea)2(Piv)6] (teaH3=triethanolamine; Piv=trimethylacetate or pivalate). Direct current (DC) susceptibility and magnetization measurements were performed allowing the extraction of possible crystal-field parameters. A simple electrostatic modeling shows reasonable agreement with experimental data. Alternating current (AC) susceptibility measurements under a zero DC field and under small applied fields were performed at different frequencies (i.e., 10–1500 Hz) and at low temperatures (i.e., 2–10 K). Multiple magnetization relaxation pathways are observed. Comparison with previously reported {CoIII2DyIII2} complex measurements allows an overall discussion about the origin of the dynamic behavior and its relationship with crystal-field split ground multiplet sublevels. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Registro:

Documento: Artículo
Título:Exploring the Slow Relaxation of the Magnetization in CoIII-Decorated {DyIII2} Units
Autor:Funes, A.V.; Carrella, L.; Rentschler, E.; Alborés, P.
Filiación:Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE (CONICET), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, Buenos Aires, C1428EHA, Argentina
Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10–14, Mainz, 55128, Germany
Palabras clave:coordination complex; dysprosium; lanthanides; magnetic properties; single-molecule magnets; Beryllium compounds; Cobalt; Coordination reactions; Dysprosium; Electric impedance measurement; Magnetic properties; Magnetization; Magnets; Molecules; Rare earth elements; Alternating current; Coordination complex; Crystal field parameter; Electrostatic modeling; Magnetization measurements; Magnetization relaxation; Single-molecule magnet; Susceptibility measurements; Cobalt compounds
Año:2016
Volumen:22
Número:40
Página de inicio:14308
Página de fin:14318
DOI: http://dx.doi.org/10.1002/chem.201602681
Título revista:Chemistry - A European Journal
Título revista abreviado:Chem. Eur. J.
ISSN:09476539
CODEN:CEUJE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09476539_v22_n40_p14308_Funes

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Citas:

---------- APA ----------
Funes, A.V., Carrella, L., Rentschler, E. & Alborés, P. (2016) . Exploring the Slow Relaxation of the Magnetization in CoIII-Decorated {DyIII2} Units. Chemistry - A European Journal, 22(40), 14308-14318.
http://dx.doi.org/10.1002/chem.201602681
---------- CHICAGO ----------
Funes, A.V., Carrella, L., Rentschler, E., Alborés, P. "Exploring the Slow Relaxation of the Magnetization in CoIII-Decorated {DyIII2} Units" . Chemistry - A European Journal 22, no. 40 (2016) : 14308-14318.
http://dx.doi.org/10.1002/chem.201602681
---------- MLA ----------
Funes, A.V., Carrella, L., Rentschler, E., Alborés, P. "Exploring the Slow Relaxation of the Magnetization in CoIII-Decorated {DyIII2} Units" . Chemistry - A European Journal, vol. 22, no. 40, 2016, pp. 14308-14318.
http://dx.doi.org/10.1002/chem.201602681
---------- VANCOUVER ----------
Funes, A.V., Carrella, L., Rentschler, E., Alborés, P. Exploring the Slow Relaxation of the Magnetization in CoIII-Decorated {DyIII2} Units. Chem. Eur. J. 2016;22(40):14308-14318.
http://dx.doi.org/10.1002/chem.201602681