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
收藏
页码：1042 / 1047
页数：6
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