Synthetic Co50Pt50/Ru/CoFe hard-soft trilayer in spin valves

J. J. Qiu*, K. B. Li, G. C. Han, Y. K. Zheng, Z. B. Guo, Y. H. Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The influence of deposition power and seedlayer on the properties of hard magnet Co50Pt50 was studied. Co50Pt50(/Co90Fe10)/Ru/Co90Fe10 trilayer was used as pining/pinned layer in spin valves. The influences of different hard layer, soft layer and free layer on exchange bias, interlayer coupling, and magnetoresistance (MR) ratio were studied. Weak antiferromagnetic interlayer coupling was obtained by adjusting the thickness of hard and soft layers. MR of a spin valve with structure Cr2/CoFe0.5/CoPt4/CoFe0.5/Ru0.8/CoFe2.2/Cu2.05/CoFe2.6/Cu1.1/Ta1 reached 10.68% (unit in nm), which is comparable to those of IrMn-based synthetic spin valves. The increment of the coercivity of the free layer is mainly due to the static magnetic interaction between the hard layer and the free layer.

Original languageEnglish (US)
Pages (from-to)e176-e179
JournalJournal of Magnetism and Magnetic Materials
Issue number2 SPEC. ISS.
StatePublished - Aug 2006
Externally publishedYes


  • Coercivity
  • Exchange bias
  • Hard-soft trilayer
  • Interlayer coupling
  • Spin valve

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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