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Journal of Applied Physics / Volume 105 / Issue 8 / MAGNETISM AND SUPERCONDUCTIVITY

J. Appl. Phys. 105, 083918 (2009); http://dx.doi.org/10.1063/1.3116154 (4 pages)

Local and nonlocal magnetic behavior of dilute manganese-doped nickel alloys

K. R. Podolak1, R. F. Willis1, M. J. Wilson1, P. E. Schiffer1, T. A. Norman2, and K. N. Altmann2

1Department of Physics, The Pennsylvania State University, 104 Davey Lab University Park, Pennsylvania 16802-6300, USA
2Department of Physics, Elon University, McMichael Science Building 212 2625 Campus Box Elon, North Carolina 27244, USA

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(Received 18 November 2008; accepted 5 March 2009; published online 24 April 2009)

We report magnetic behavior of a dilute ferromagnetic alloy Ni1−xMnx, 0<x<25%. Magnetic circular dichroism (MCD) is used to examine the local magnetic moment on each element, and superconducting quantum interference device magnetometry is used to evaluate the magnetization of the alloy as a whole. Both MCD and hysteresis loops show a collapse in moment at x ≈ 15% measured at 100 K. The Mn doping appears to disturb the long-range ordering of the host nickel spins which, in the concentration range studied, is a precursor disordered ferromagnet prior to a spin-glass phase.

© 2009 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL DETAILS
  3. RESULTS AND DISCUSSION
  4. CONCLUSION

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KEYWORDS and PACS

Keywords

doping, ferromagnetic materials, magnetic circular dichroism, magnetic moments, magnetisation, manganese alloys, nickel alloys, spin glasses

PACS

  • 75.30.Cr

    Saturation moments and magnetic susceptibilities

  • 75.50.Cc

    Other ferromagnetic metals and alloys

  • 78.20.Ls

    Magneto-optical effects

  • 75.60.Ej

    Magnetization curves, hysteresis, Barkhausen and related effects

  • 75.50.Lk

    Spin glasses and other random magnets

  • 61.72.Bb

    Theories and models of crystal defects

  • 61.72.up

    Other materials

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3116154

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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