Experimental study of the spin density of metastable fcc ferromagnetic Fe-Cu alloys

被引：12

作者：

Bove, LE ^{[1
]}

Petrillo, C

Sacchetti, F

Mazzone, G

机构：

[1] INFM, Unita Perugia, Perugia, Italy

[2] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy

[3] ENEA, Ctr Ric Casaccia, Div Nuovi Mat, Rome, Italy

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.61.9457

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetization density measurements on metastable FexCu1-x alloys at four compositions (x = 20, 40, 50, and 60 at. %) and at 5 K temperature were carried out by means of polarized neutron diffraction. The samples were produced by high-energy ball milling and characterized by x-ray diffraction and fluorescence measurements. Additional bulk magnetization measurements were carried out on the two samples at high Fe concentration. Over the present concentration region, the Fe-Cu system is ferromagnetic and the four samples were found to be in the fcc phase. Fe-Cu is therefore a very suitable system to investigate the magnetic state of Fe in an fee environment. Other than confirming that the Fe-Cu system is not a simple dilution alloy, the present results were compatible with a two-state model for fee Fe-that is, two different coexisting electronic states associated with different magnetic moments and form factors.

引用

页码：9457 / 9466

页数：10

共 30 条

[1] APPLICATION OF GENERALIZED GRADIENT-CORRECTED DENSITY FUNCTIONALS TO IRON [J].