Journal of Magnetism and Magnetic Materials

Arcady Zhukov, Carlos Garcia, Maxim Ilyn, Rastislav Varga, Juan Jose Del Val, Alexander Granovsky, Valeria Rodionova, Mihail Ipatov, Valentina Zhukova

Research output: Contribution to conferencePaper

21 Citations (Scopus)

Abstract

We studied magnetic and structural properties of granular CoxCu100-x(5<x<40 at%), Cu63Fe37and Heusler-type Ni2MnGa glass-coated microwires. We found that the structure of Co-Cu microwires consists of two phases: fcc Cu for all the samples and fcc α-Co present for higher Co content. In the case of low Co content, Co atoms are distributed within the Cu matrix. The quantity and the size of grains strongly depend on the geometry of the microwire. Co-Cu and Fe-Cu microwires exhibited considerable magnetoresistance (MR). For CoxCu100-xmicrowires at x≥30 the anisotropic contribution to MR has been observed. Temperature dependences of magnetization measured without an external magnetic field (ZFC) and in the presence of a field (FC) show considerable difference below 20 K, indicating the presence of small α-Fe or Co grains embedded in the Cu matrix. Annealed Ni2MnGa microwires showed ferromagnetic behavior with Curie temperature about 330 K and polycrystalline structure with space group I4/mmm and lattice parameters a=3.75 Å and c=6.78 Å. © 2012 Elsevier B.V.
Original languageEnglish
Pages3558-3562
Number of pages5
DOIs
Publication statusPublished - 1 Oct 2012
Externally publishedYes
Eventconference -
Duration: 1 Oct 2012 → …

Conference

Conferenceconference
Period1/10/12 → …

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    Zhukov, A., Garcia, C., Ilyn, M., Varga, R., Del Val, J. J., Granovsky, A., Rodionova, V., Ipatov, M., & Zhukova, V. (2012). Journal of Magnetism and Magnetic Materials. 3558-3562. Paper presented at conference, . https://doi.org/10.1016/j.jmmm.2012.02.089