Spin dynamics at level crossing in molecular AF rings probed by NMR

被引：5

作者：

Lascialfari, A

Borsa, F

Julien, MH

Micotti, E

Furukawa, D

Jang, ZH

Cornia, A

Gatteschi, D

Horvatic, M

Van Slageren, J

机构：

[1] Univ Pavia, Dept Phys A Volta, I-27100 Pavia, Italy

[2] Univ Pavia, Unita INFM, I-27100 Pavia, Italy

[3] Iowa State Univ, Ames Lab, Dept Phys & Astron, Ames, IA 50011 USA

[4] Univ Grenoble 1, Spectrometrie Phys Lab, F-38042 Grenoble, France

[5] Hokkaido Univ, Div Phys, Grad Sch Sci, Sapporo, Hokkaido 0600810, Japan

[6] Univ Modena, Dept Chem, I-41100 Modena, Italy

[7] Univ Modena, Unita INSTM, I-41100 Modena, Italy

[8] Univ Florence, Dept Chem, I-50019 Florence, Italy

[9] Univ Florence, Unita INSTM, I-50019 Florence, Italy

[10] CNRS, Grenoble High Magnet Field Lab, F-38042 Grenoble, France

[11] MPI, FKF, F-38042 Grenoble, France

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷

关键词：

magnetic ring; nuclear relaxation rate; quantum tunneling;

D O I：

10.1016/j.jmmm.2003.12.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The low-temperature spin dynamics in molecular rings with a finite number (N less than or equal to 10) of magnetic ions was studied by means of H-1 NMR. When an external magnetic field (B) induces a crossing between energy levels, peaks are observed in the spin-lattice relaxation rate of protons, 1/T-1(B), at constant temperature. We discuss similarities and differences in the data from three different rings: Fe10, Fe6:Li and Cr8. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：1042 / 1047

页数：6

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