Magnetic properties of new Fe6(triethanolaminate(3-))6 spin-clusters

被引：26

作者：

Pilawa, B

Desquiotz, R

Kelemen, MT

Weickenmeier, M

Geisselmann, A

机构：

[1] Univ Karlsruhe, Inst Phys, D-76128 Karlsruhe, Germany

[2] Univ Karlsruhe, Inst Anorgan Chem, D-76128 Karlsruhe, Germany

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1998年 / 177卷

关键词：

electron-spin resonance; spin cluster;

D O I：

10.1016/S0304-8853(97)00263-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the magnetic properties of three cyclic hexanuclear iron(III) spin-clusters ([Fe-6(tea)(6)].6MeOH (1), [NaFe6(tea)(6)]ClO4.2MeOH (2) and [LiFe6(tea)(6)]ClO4.2MeOH (3), (tea: triethanolaminate(3-)). The intra-molecular exchange coupling between the Fe-III-spins is determined by measurements of the magnetic susceptibility in the range 2-300 K. The zero-field splitting of the lowest cluster spin states (E/k(B) < 200 K) is studied by ESR (electron-spin resonance) at frequencies between 9.5 and 350 GHz, The level splitting is analyzed by the irreducible-tenser operator technique. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：748 / 749

页数：2