Ferromagnetic resonance in 80Ni-Fe/Cu/Co multilayer films

H. Koizumi, Y. Ando, T. Miyazaki

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Trilayers and multilayers containing ferromagnetic 80Ni-Fe,Co layers separated by nonmagnetic Cu layers were fabricated using the magnetron sputtering method. For 80Ni-Fe(60 Å)/Cu(dCu)/Co(60 Å) trilayer films, the MR ratio and the exchange coupling strength oscillated with increasing dCu. For 80Ni-Fe(60 Å)/Cu(dCu)/Co(60 Å)/Cu(dCu)/80Ni-Fe(60 Å) multilayer films, however, the exchange coupling between the bottom 80Ni-Fe and the Co layers oscillated, while that between the Co and the top 80Ni-Fe layers decreased monotonously with increasing dCu. Consequently, antiferromagnetic exchange coupling was not achieved between the Co(60 Å) and the top magnetic layer. The reason for the nonexistence of antiferromagnetic exchange coupling is discussed by taking into account the rougher surface of the Co(60 Å) layer caused by the growth of the different crystalline structures.

Original languageEnglish
Pages (from-to)293-299
Number of pages7
JournalJournal of Magnetism and Magnetic Materials
Volume164
Issue number3
DOIs
Publication statusPublished - 1996 Dec

Keywords

  • 80Ni-Fe
  • AFM
  • Co
  • Exchange coupling energy
  • FMR
  • Giant magnetoresistance
  • Multilayers

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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