Muon study of molecular magnets, spin crossover and magnetic nanodiscs

Conference item

We present the results of recent muon-spin rotation (muSR) experiments on a variety of novel 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. The spin-crossover phenomenon has been studied in Fe(PM-PEA)(2)(NCS)(2), which shows Gaussian and root-exponential muon relaxation in the high-spin and low-spin phases, respectively. Dy spin fluctuations have been studied with muSR in the ferrimagnetic chain Dy(hfac)(3)(NITEt). Experiments on a disc-shaped molecular complex containing Fe-19 (with spin 31/2) reveal the effects of quantum tunneling of magnetization and allow an estimate of the quantum tunneling rate. (C) 2002 Elsevier Science B.V. All rights reserved.

Authors: Blundell, S; Pratt, F; Marshall, I; Steer, C; Hayes, W

• Publication status: Published
• Journal: SYNTHETIC METALS
• Volume: 133
• Pages: 531-533
• Publication date: 2003-03-13
• Event title: 56th Yamada Conference on Crystalline Organic Metals Superconductors and Ferromagnets (ISCOM 2001)
• DOI: 10.1016/S0379-6779(02)00424-1
• ISSN: 0379-6779
• Keywords: nitronyl nitroxides; molecular magnets; quantum tunneling; spin fluctuations; magnetic clusters; muon-spin relaxation; mu SR