Comparison of the spin dynamics in different types of molecular magnetic rings from 1H NMR

被引：28

作者：

Lascialfari, A ^{[1
]}

Jang, ZH

Borsa, F

Gatteschi, D

Cornia, A

机构：

[1] Univ Florence, Dept Chem, Florence, Italy

[2] Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA

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

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

[5] INFM, Unita Pavia, Dept Phys A Volta, I-27100 Pavia, Italy

来源：

JOURNAL OF APPLIED PHYSICS | 1998年 / 83卷 / 11期

关键词：

D O I：

10.1063/1.367564

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Proton spin-lattice relaxation (NSLR) measurements have been performed in two molecular copper magnetic rings containing 6 and 8 spins (S = 1/2), respectively, in an almost coplanar arrangement in order to probe the spin dynamics of the spins in the ring. The NSLR results obtained in the Cu6 and Cu8 rings as a function of temperature and of applied magnetic field are compared with previous results of NSLR of H-1 in the iron(III) rings Fe6 and Fe10 (S = 5/2). At room temperature, common features are found in the spin dynamics while at low temperature, when correlation effects become important, important differences are observed in the rings depending on the kind of coupling between magnetic spins (ferromagnetic or antiferromagnetic) and on the spin value S. (C) 1998 American Institute of Physics. [S0021-8979(98)19911-5].

引用

页码：6946 / 6948

页数：3

共 13 条

[1] REACTION OF DIOXYGEN WITH [CU(DMPZ)]N (HDMPZ = 3,5-DIMETHYLPYRAZOLE) - CRYSTAL-STRUCTURE, REACTIVITY, AND CATALYTIC PROPERTIES OF [CU8(DMPZ)8(OH)8] [J].