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

Описание

Тип публикации: статья из журнала

Год издания: 2010

Идентификатор DOI: 10.1134/S1063783410090015

Аннотация: 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 rПоказать полностьюevealed 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.

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Издание

Журнал: PHYSICS OF THE SOLID STATE

Выпуск журнала: Vol. 52, Is. 9

Номера страниц: 1787-1796

ISSN журнала: 10637834

Место издания: NEW YORK

Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER

Авторы

  • Khalyapin D.L. (Kirensky Institute of Physics, Siberian Branch,Russian Academy of Sciences)
  • Kim P.D. (Kirensky Institute of Physics, Siberian Branch,Russian Academy of Sciences)
  • Turpanov I.A. (Kirensky Institute of Physics, Siberian Branch,Russian Academy of Sciences)
  • Beten'kova A.Y. (Kirensky Institute of Physics, Siberian Branch,Russian Academy of Sciences)
  • Bondarenko G.V. (Kirensky Institute of Physics, Siberian Branch,Russian Academy of Sciences)
  • Isaeva T.N. (Kirensky Institute of Physics, Siberian Branch,Russian Academy of Sciences)
  • Kim J. (Department of Metallurgical and Material Science,Hanyang University)
  • Kim I. (EMD Laboratory, Central R and D Institute,Samsung Electro-Mechanics Co., LTD)

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