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Magnetism of dilute Co(Hf) and Co(Pt) nanoclusters

Journal of Applied Physics, ISSN: 0021-8979, Vol: 111, Issue: 7
2012
  • 6
    Citations
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  • 15
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Metrics Details

  • Citations
    6
    • Citation Indexes
      6
  • Captures
    15

Conference Paper Description

An investigation of the magnetic properties of Co-rich nanoparticles alloyed with a small fraction of Pt and Hf is presented. Co(Hf) and Co(Pt) nanoparticles with less than 15 at of dopants were produced using a cluster-deposition method. The nanoparticles have sizes of less than 10 nm and show improved magnetic properties upon doping. Maximum coercivities of 900 Oe (at 300 K) and 2000 Oe (at 10 K) were observed for Co nanoparticles alloyed with 14.1 at of Hf. Doped nanoparticles also exhibit high anisotropies, such as K 9.98 Mergscm (14.1 at of Hf) and K 8.24 Mergscm (9.5 at of Pt), as compared to Co nanoparticles (K 6.21 Mergscm ). © 2012 American Institute of Physics.

Bibliographic Details

B. Balamurugan; R. Skomski; B. Das; V. R. Shah; D. J. Sellmyer; X. Z. Li; P. Manchanda; A. Kashyap

AIP Publishing

Physics and Astronomy

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