Rationalisation of weak ferromagnetism in manganese(III) chains: the relation between structure and ordering phenomena

被引：29

作者：

Mossin, S ^{[1
]}

Weihe, H

Sorensen, HO

Lima, N

Sessoli, R

机构：

[1] Univ Copenhagen, Dept Chem, DK-2100 Copenhagen, Denmark

[2] Univ Florence, Dept Chem, I-50121 Florence, Italy

[3] Univ Florence, UdR INSTM, I-50121 Florence, Italy

来源：

DALTON TRANSACTIONS | 2004年 / 04期

关键词：

D O I：

10.1039/b314355d

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The synthesis, structure and magnetic properties of the one-dimensional chain compounds [Mn(cyclam)(SO4)]ClO4.H2O (1) and [Mn(cyclam)(HCOO)](CF3SO3)(ClO4) (2) are reported. Cyclam is the cyclic tetradentate ligand 1,4,7,11-tetraazacyclotetradecane. Both chain compounds exhibit antiferromagnetic interactions within the chains. A magnetic ordering phase transition at 5.5 K in (1) is investigated by magnetisation measurements along the three principal crystallographic axes of a single crystal and the results show unambiguously that the ferromagnetic ordering is only taking place along one crystallographic axis. The spin structure of the magnetic ordered phase and the magnitude of the ferromagnetic moment are correlated with the crystal structure and symmetry of the compound.

引用

页码：632 / 639

页数：8

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