Effect of alloy formation processes in the Co-Cu system on the magnetic and magnetoresistance properties of multilayer Co/Cu films with ultrathin Co layers prepared by DC magnetron sputtering

被引：8

作者：

Khalyapin, D. L. ^{[1
,2
]}

Kim, P. D. ^{[2
]}

Kim, J. ^{[3
]}

Turpanov, I. A. ^{[2
]}

Beten'kova, A. Ya. ^{[2
]}

Bondarenko, G. V. ^{[2
]}

Isaeva, T. N. ^{[2
]}

Kim, I. ^{[4
]}

机构：

[1] Siberian Fed Univ, Krasnoyarsk 660041, Russia

[2] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

[3] Hanyang Univ, Dept Met & Mat Sci, Ansan 426791, South Korea

[4] Samsung Elect Mech Co LTD, Cent R&D Inst, EMD Lab, Suwon 443743, Gyunggi Do, South Korea

来源：

PHYSICS OF THE SOLID STATE | 2010年 / 52卷 / 09期

关键词：

GIANT MAGNETORESISTANCE; TEMPERATURE; ANISOTROPY; GROWTH;

D O I：

10.1134/S1063783410090015

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

This paper reports on a study of multilayer Co/Cu films with an effective thickness of the Co layer of similar to 3.5 , which were prepared by magnetron sputtering. The samples prepared have been found to have a metastable multiphase structure. An analysis of the data obtained by structural and, primarily, by magnetic methods has revealed that the main phases are the Co/Cu supersaturated solid solution (alloy) with a Co concentration of about 30 at %, the superparamagnetic phase, and the paramagnetic phase, which is accounted for by the presence of small (a few atoms at most) Co clusters embedded in the Cu matrix. A clearly pronounced maximum in the temperature dependences of the low-field magnetoresistance has been found, which is associated with the temperature of the magnetic phase transition of the supersaturated Co-Cu alloy.

引用

页码：1787 / 1796

页数：10

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