Tunable dipolar magnetism in high-spin molecular clusters

被引：36

作者：

Evangelisti, M. ^{[1
]}

Candini, A.

Ghirri, A.

Affronte, M.

Powell, G. W.

Gass, I. A.

Wood, P. A.

Parsons, S.

Brechin, E. K.

Collison, D.

Heath, S. L.

机构：

[1] CNR, INFM, Natl Res Ctr Nanostruct & Biosyst Surfaces S3, I-41100 Modena, Italy

[2] Univ Modena & Reggio Emilia, Dipartimento Fis, I-41100 Modena, Italy

[3] Univ Manchester, Dept Chem, Manchester M13 9PL, Lancs, England

[4] Univ Edinburgh, Sch Chem, Edinburgh EH9 3JJ, Midlothian, Scotland

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.97.167202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the Fe-17 high-spin molecular cluster and show that this system is an exemplification of nanostructured dipolar magnetism. Each Fe-17 molecule, with spin S=35/2 and axial anisotropy as small as D similar or equal to-0.02 K, is the magnetic unit that can be chemically arranged in different packing crystals while preserving both the spin ground state and anisotropy. For every configuration, molecular spins are correlated only by dipolar interactions. The ensuing interplay between dipolar energy and anisotropy gives rise to macroscopic behaviors ranging from superparamagnetism to long-range magnetic order at temperatures below 1 K.

引用

页数：4

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