BLUNDELL, Stephen J.; PRATT, Francis L.; LANCASTER, Tom; MARSHALL, Ishbel M.; STEER, Christopher A.; HAYES, W.; SUGANO, Tadashi; LÉTARD, Jean-François; CANESCHI, Andrea; GATTESCHI, D.; HEATH, Sarah L.

doi:10.1016/S0921-4526(02)01688-5

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BLUNDELL, Stephen J.
Clarendon Laboratory

PRATT, Francis L.
ISIS Neutron and Muon Source [ISIS]

LANCASTER, Tom
Clarendon Laboratory

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Physica B: Condensed Matter. 2003, vol. 326, n° 1-4, p. 556-562

Elsevier

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We present the results of recent μSR experiments on a variety of novel organic and molecular magnetic systems. Muons are sensitive to local static fields and magnetic fluctuations, but can probe much more than just the onset of long-range magnetic order. We review our work on nitronyl nitroxide organic ferromagnets and antiferromagnets. We describe 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. Experiments on a disc-shaped molecular complex containing Fe19 (with spin Image) reveal the effects of quantum tunneling of magnetization and allow an estimate of the quantum tunneling rate.< Réduire

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Organic magnet

Nanodisc

Quantum tunneling

Molecular magnet

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µSr study of organic systems: ferromagnetism, antiferromagnetism, the spin-crossover effect, and fluctuations in magnetic nanodiscs

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