μSR studies of organic and molecular magnets
PRATT, Francis L.
ISIS Neutron and Muon Source [ISIS]
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ISIS Neutron and Muon Source [ISIS]
PRATT, Francis L.
ISIS Neutron and Muon Source [ISIS]
< Leer menos
ISIS Neutron and Muon Source [ISIS]
Idioma
en
Article de revue
Este ítem está publicado en
Polyhedron. 2003, vol. 22, n° 14-17, p. 1973-1980
Elsevier
Resumen en inglés
Muon-spin rotation and relaxation (μSR) experiments have been performed on a variety of novel organic and molecular magnetic systems. In these experiments, implanted muons are used to study the magnitude, distribution and ...Leer más >
Muon-spin rotation and relaxation (μSR) experiments have been performed on a variety of novel organic and molecular magnetic systems. In these experiments, implanted muons are used to study the magnitude, distribution and dynamics of the local field at the muon site. Calculations of the spatial dependence of the dipole-field inside the unit cell are used to interpret the data and determine the muon site in certain cases. We describe and review muon experiments on nitronyl nitroxide organic ferromagnets and antiferromagnets. We discuss a muon study of the spin crossover phenomenon which has been studied in Fe(PM-PEA)2(NCS)2, and which shows Gaussian and root-exponential muon relaxation in the high-spin and low-spin phases, respectively. The effects of high temperature annealing on TDAE-C60 have also been studied with μSR. Experiments on a disc-shaped molecular complex containing Fe19 (with spin 31/2) reveal the effects of fluctuations of magnetization and allow an estimate of the fluctuation rate. These experiments demonstrate the wide range of problems which can be tackled using the μSR technique.< Leer menos
Palabras clave en italiano
Muon-spin rotation
Organic magnet
Nanodisc
Quantum tunneling
Molecular magnet
Orígen
Importado de HalCentros de investigación