Magnetic behaviour of ludwigites

被引：9

作者：

Fernandes, JC

Guimaraes, RB

Mir, M

Continentino, MA

Borges, HA

Cernicchiaro, G

Fontes, MB

Baggio-Saitovitch, EM

机构：

[1] Univ Fed Fluminense, Inst Fis, BR-24210340 Niteroi, RJ, Brazil

[2] Pontificia Univ Catolica Rio de Janeiro, Dept Fis, BR-22452970 Rio De Janeiro, Brazil

[3] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil

来源：

PHYSICA B | 2000年 / 281卷

关键词：

oxyborates; low-dimensional magnetism; weak ferromagnetism;

D O I：

10.1016/S0921-4526(99)01151-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Ludwigites are low-dimensional magnetic systems with chemical formula 2MO . M'BO3. Fur the ludwigites in which M' = Fe and M = Mg, Fe, Ni and Cu we report the following behavior: (1) The ordering temperatures of the Fe3+ sub-system in each compound is higher than that of the respective M sub-system: (2) In particular, the 2FeO . FeBO3 ludwigite presents a reentrant weak ferromagnetism in the range 40-70 K and the coexistence of paramagnetic and antiferromagnetic spins between 70 and 112 K (C) 2000 Elsevier Science B.V, All rights reserved.

引用

页码：694 / 695

页数：2

共 3 条

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Fernandes, JC ;

Guimaraes, RB ;

Continentino, MA ;

Borges, HA ;

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Tholence, JL ;

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[3] Transition from quasi-one-dimensional to spin-glass behaviour in insulating FeMg2BO5 [J].

Neuendorf, H ;

Gunsser, W .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1997, 173 (1-2) :117-125

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