How Far can the Anisotropy Deviate from Uniaxiality in a Dy-Based Single-Molecule Magnet? Dinuclear Dy(III) Complex Study
| Autor: | Abhishake Mondal, Annie K. Powell, Christopher E. Anson, R. T. Galeev, R. M. Eremina, Amer Baniodeh, Andrei A. Sukhanov, Violeta K. Voronkova |
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| Rok vydání: | 2016 |
| Předmět: |
Physics
Ligand field theory Solid-state physics 010405 organic chemistry Relaxation (NMR) 010402 general chemistry 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences law.invention Ion Magnetization Crystallography Nuclear magnetic resonance law Single-molecule magnet Anisotropy Electron paramagnetic resonance |
| Zdroj: | Applied Magnetic Resonance. 48:101-113 |
| ISSN: | 1613-7507 0937-9347 |
| DOI: | 10.1007/s00723-016-0852-y |
| Popis: | The DyIII ions in the dimer [Dy2(H2tea)2(O2CPh)4]·2H2O (1) (H3tea = triethanolamine) have the 9-coordinate monocapped square-antiprismatic ligand field environment. Compound 1 shows slow relaxation of magnetization which is observable only with applied magnetic fields. This is consistent with the idea that low-symmetry ligand fields allow for the quantum tunneling of magnetization. This is reflected by the fact that there are no observable maxima in the out-of-phase ac susceptibility above 1.8 K. The {g}-tensor of the DyIII ions {g x = 11, g y = 8.2, g z = 1} further underlying the reduced uniaxiality in this system was determined in electron paramagnetic resonance (X- and Q-band) studies of 1 at temperatures down to 4 K. |
| Databáze: | OpenAIRE |
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