Rigid magnetic foam-like behavior in ball-milled FeAl -: art. no. 012408

被引：19

作者：

Kiss, LF

Kaptás, D

Balogh, J

Bujdosó, L

Kemény, T

Vincze, L

Gubicza, J

机构：

[1] Res Inst Solid State Phys & Opt, H-1525 Budapest, Hungary

[2] Eotvos Lorand Univ, Inst Solid State Phys, H-1088 Budapest, Hungary

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.70.012408

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

After ball-milling nonmagnetic FeAl a grain structure resembling to a rigid magnetic foam is indicated by Mossbauer spectroscopy. It consists of nanosize nonmagnetic grains with ferromagnetic boundaries formed by about two atomic layers of Fe. The magnetic behavior is uncommon: (i) the transition to the paramagnetic state is glass-like and magnetic relaxation sets in at low temperatures; (ii) the magnitude of the local Fe magnetic moments decreases linearly with temperature; (iii) in high fields a strongly anisotropic ferromagnetic behavior is observed.

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页码：012408 / 1

页数：4

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