Muon study of molecular magnets, spin crossover and magnetic nanodiscs

被引：11

作者：

Blundell, SJ

Pratt, FL

Marshall, IM

Steer, CA

Hayes, W

Létard, JF

Heath, SL

Caneschi, A

Gatteschi, D

机构：

[1] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

[2] Rutherford Appleton Lab, ISIS Pulsed Muon Facil, Didcot OX11 0QX, Oxon, England

[3] CNRS, UPR 9048, ICMCB, Grp Sci Mol, F-33608 Pessac, France

[4] Univ York, Dept Chem, York YO10 5DD, N Yorkshire, England

[5] Univ Florence, Dipartimento Chim, I-50144 Florence, Italy

来源：

SYNTHETIC METALS | 2003年 / 133卷

关键词：

muon-spin relaxation; mu SR; molecular magnets; quantum tunneling; spin fluctuations; nitronyl nitroxides; magnetic clusters;

D O I：

10.1016/S0379-6779(02)00424-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：531 / 533

页数：3

共 20 条

[1] MAGNETIC-ORDERING IN A MOLECULAR MATERIAL CONTAINING DYSPROSIUM(III) AND A NITRONYL NITROXIDE [J].