The European Physical Journal B

, 86:489

Short-range magnetic correlations and parimagnetism in RCo2

  • F. Bartolomé
  • C.M. Bonilla
  • J. Herrero-Albillos
  • I. Calvo-Almazán
  • C. Castán
  • E. Weschke
  • D. Schmitz
  • D. Paudyal
  • Y. Mudryk
  • V. Pecharsky
  • K.A. GschneidnerJr.
  • A. Stunault
  • L.M. García
Regular Article
Part of the following topical collections:
  1. Topical issue: New Trends in Magnetism and Magnetic Materials

Abstract

X-ray circular magnetic dichroism, polarized neutron diffraction, ac susceptibility, and Seebeck effect have been measured for several members of the RCo2 series (R = Ho, Tm, Er) as a function of temperature and applied magnetic field. The experimental results show robust parimagnetism (a general behaviour along the RCo2 series with R being a heavy rare earth ion) and two reversal temperatures in some systems, which is an unexpected result. Polarised neutron diffraction show differences between results obtained on single crystals or polycrystalline ingots. We propose an interpretation of parimagnetic RCo2 as a Griffiths phase of the high temperature, magnetically ordered, amorphous RCo2 phase.

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • F. Bartolomé
    • 1
  • C.M. Bonilla
    • 1
  • J. Herrero-Albillos
    • 1
    • 2
    • 3
  • I. Calvo-Almazán
    • 1
    • 4
  • C. Castán
    • 1
  • E. Weschke
    • 5
  • D. Schmitz
    • 5
  • D. Paudyal
    • 6
  • Y. Mudryk
    • 6
    • 7
  • V. Pecharsky
    • 6
    • 7
  • K.A. GschneidnerJr.
    • 6
    • 7
  • A. Stunault
    • 4
  • L.M. García
    • 1
  1. 1.Instituto de Ciencia de Materiales de Aragón and Departamento de Física de la Materia Condensada, CSIC - Universidad de ZaragozaZaragozaSpain
  2. 2.Fundación ARAIDZaragozaSpain
  3. 3.Centro Universitario de la DefensaZaragozaSpain
  4. 4.Institut Laue-LangevinGrenobleFrance
  5. 5.Helmholtz-Zentrum Berlin für Materialien und Energie GmbHBerlinGermany
  6. 6.Ames Laboratory, U.S. Department of Energy, Iowa State UniversityAmesUSA
  7. 7.Department of Materials Science and EngineeringIowa State UniversityAmesUSA

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