Chinese Science Bulletin

, Volume 46, Issue 20, pp 1681–1684 | Cite as

Ultrathin permalloy films

  • Yu Guanghua
  • Zhao Hongchen
  • Zhu Fengwu


In view of the principle of glow-discharge, ultrathin Ni81Fe19(12 nm) films were prepared at an ultrahigh base vacuum. The anisotropic magnetoresistance coefficient (ΔR/R %) for Ni81Fe19(12 nm) film reaches 1.2%, while the value of its coercivity is 127 A/m (i.e. 1.6 Oe). Ultrathin Ni81Fe19(12 nm) films were also prepared at a lower base vacuum. The comparison of the structure for two kinds of films shows that the films prepared at an ultrahigh base vacuum have a smoother surface, a denser structure with a few defects; the films prepared at a lower base vacuum have a rougher surface, a porouser structure with some defects.


NiFe film anisotropic magnetoresistance coercivity structure 


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Copyright information

© Science in China Press 2001

Authors and Affiliations

  • Yu Guanghua
    • 1
  • Zhao Hongchen
    • 1
  • Zhu Fengwu
    • 1
  1. 1.Department of Materials PhysicsUniversity of Science and TechnologyBeijingChina

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