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Magnetic and electrical characteristics in dense Fe–Ni alloy cluster-assembled films prepared by energetic cluster deposition

  • D.L. Peng (a1), K. Sumiyama (a1), K. Kumagai (a1), T. Yamabuchi (a1), D. Kobayashi (a1) and T. Hihara (a1)...

Abstract

Fe–Ni alloy cluster-assembled films were obtained by a plasma–gas-condensation-type cluster-deposition method. We studied the magnetic and electrical properties of these assemblies prepared on an electrically grounded substrate [bias voltage (Va) = 0 kV] and on a negatively biased substrate (Va = −20 kV). The packing density and saturation magnetization per volume, Ms, are much larger for the assemblies prepared at Va = −20 kV than those prepared at Va = 0 kV, while the magnetic coercivity, Hc, and electrical resistivity, ρ, are much lower for the assemblies prepared at Va = −20 kV than those prepared at Va = 0 kV. For Ni-rich Fe–Ni alloy cluster-assembled films obtained at Va = −20 kV, the Hc values can become smaller than 160 A/m (the precision limit of our superconducting quantum interference device magnetometer) by adjusting the initial cluster size. The magnetic and electrical properties of Fe–Ni cluster-assembled films are much improved in comparison with those of pure Fe cluster-assembled films.

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Corresponding author

a)Address all correspondence to this author. Present address: Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, People’s Republic of China. e-mail: dlpeng@xmu.edu.cn

References

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Keywords

Magnetic and electrical characteristics in dense Fe–Ni alloy cluster-assembled films prepared by energetic cluster deposition

  • D.L. Peng (a1), K. Sumiyama (a1), K. Kumagai (a1), T. Yamabuchi (a1), D. Kobayashi (a1) and T. Hihara (a1)...

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