Effect of severe plastic deformation on the properties of the Pt3Fe antiferromagnet

被引：3

作者：

Kourov, N. I. ^{[1
]}

Knyazev, Yu. V. ^{[1
]}

Korolev, A. V. ^{[1
]}

Pushin, V. G. ^{[1
]}

Dorofeev, Yu. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Met Phys, Ural Div, Ekaterinburg 620219, Russia

来源：

PHYSICS OF THE SOLID STATE | 2010年 / 52卷 / 02期

关键词：

ALLOYS;

D O I：

10.1134/S1063783410020150

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The effect of atomic disordering on the magnetic, electrical, and optical properties of the Pt(74.1)Fe(25.9)alloy close in composition to the stoichiometric Pt3Fe alloy has been studied. It has been shown that, as a result of severe plastic torsional deformation under high pressure, the alloy transforms from the antiferromagnetic state (T (N)=164 K) into the ferromagnetic state (T (C)a parts per thousand 400 K). In this case, the residual electrical resistivity increases by a factor of more than two and the thermopower changes its sign from positive to negative. The results of the studies of the optical conductivity agree with the previously calculated electronic spectra of the atomically ordered and disordered Pt3Fe alloys in the range of interband transitions and with the obtained data on the electrical properties in the infrared range.

引用

页码：317 / 322

页数：6

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