MAGNETIC-INTERACTIONS INVOLVING RARE-EARTH IONS

被引：14

作者：

BENELLI, C

CANESCHI, A

GATTESCHI, D

PARDI, L

机构：

[1] Department of Chemistry, University of Florence

来源：

MATERIALS CHEMISTRY AND PHYSICS | 1992年 / 31卷 / 1-2期

关键词：

D O I：

10.1016/0254-0584(92)90147-Z

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The bulk properties of magnetic materials containing rare earths are essentially determined by the anisotropy of the ground state of 4f ions and by the nature of lanthanide-lanthanide and/or lanthanide-transition metal interactions. In an attempt to clarify the role of these mechanisms we tried to synthesize simple molecular compounds where rare earth ions were present together with other paramagnetic centers. The analysis of the magnetic behavior of some of these systems lead us to propose a simple model based on a spin polarization mechanism to justify the observed exchange interactions. Low dimensional systems containing 4f ions have been synthesized: the unexpected magnetic properties of these systems have been analyzed assuming the presence of next-nearest-neighbors competing interactions.

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页码：17 / 22

页数：6

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