Thermal variation of magnetotransport properties of Co/Cu magnetic multilayers

Sakai T., Oomi G., Duman E., Acet M., Saito K., Takanashi K.

Journal of Magnetism and Magnetic Materials, cilt.272-276, sa.SUPPL. 1, 2004 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Özet
  • Cilt numarası: 272-276 Sayı: SUPPL. 1
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1016/j.jmmm.2003.12.244
  • Dergi Adı: Journal of Magnetism and Magnetic Materials
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: gaint magnetoresistance, spin-dependent scattering, multilayers
  • Ankara Üniversitesi Adresli: Hayır

Özet

Thermal variation and dependence on Cu-layer thickness tCu (tCu = 7.6-25.7 Å) of magnetoresistance (MR) and the magnetization (M) of [Co(10.2 Å)/Cu(tCu)]25 magnetic multilayers (MMLs) have been measured between 4.2 and 300 K. So as long as the magnetization of adjacent Co layers are aligned antiparallel, the MR increases with decreasing temperature. This temperature dependence becomes weak as the antiparallel coupling weakens, and it is almost temperature-independent for samples with tCu where the magnetization is aligned parallel. The temperature dependence of MR for tCu = 11.4 Å, for which the coupling crosses over from antiparallel to parallel, is complex. © 2003 Elsevier B.V. All rights reserved.