Carbon additive effects on the nanostructure and magnetic property of the Co-Fe-Zr-B-C films

G. J. Chen, C. Y. Lin, Y. H. Shih, S. R. Jian, J. S.C. Jang

Research output: Contribution to journalArticlepeer-review


In this study, the carbon additive Co-Fe-Zr-B alloy films were prepared by dual-gun co-sputtering. The effects of the carbon addition and heat treatment on the nanostructure and magnetic properties of the Co-Fe-Zr-B-C alloy films are reported. The experimental results show that a crystalline (Co, Fe) phase formed after heat treatment at 400 in the Co-Fe-Zr-B-C films with low carbon additive level. Carbon atoms inhibited the crystallization of the as-deposited Co-Fe-Zr-B-C films. From the TEM observation, the nanostructures, such as the atomic structure and grain sizes, showed a strong carbon content dependence. The coercivities of the Co-Fe-Zr-B-C films annealed at 400 varied from 18 to 0.3 Oe with the increasing carbon addition. However, the films annealed at higher temperature exhibited a dramatic increase in the coercivities, which correlated to the formation of the crystalline (Co, Fe) phase. The resistivities of the Co-Fe-Zr-B-C films relied on the carbon contents rather than on annealing temperatures.

Original languageEnglish
Pages (from-to)4994-4997
Number of pages4
JournalThin Solid Films
Issue number17
StatePublished - 1 Jul 2009


  • Composite films
  • Magnetic property
  • Nanostructures
  • Sputtering


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