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Title: Short-Range Magnetic Correlations and Parimagnetism in RCo 2

X-ray circular magnetic dichroism, polarized neutron diffraction, ac susceptibility, and Seebeck effect have been measured for several members of the RCo 2 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 RCo 2 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 RCo 2 as a Griffiths phase of the high temperature, magnetically ordered, amorphous RCo 2 phase. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013
 [1] ;  [1] ;  [2] ;  [3] ;  [1] ;  [4] ;  [4] ;  [5] ;  [6] ;  [6] ;  [6] ;  [7] ;  [1]
  1. Univ. of Zaragoza (Spain)
  2. Univ. of Zaragoza (Spain); ARAID Foundation, Zaragoza (Spain); Univ. Center of Defense, Zaragoza (Spain)
  3. Univ. of Zaragoza (Spain); Inst. Laue-Langevin (ILL), Grenoble (France)
  4. Helmholtz-Zentrum Berlin for Materials and Energy, Berlin (Germany)
  5. Ames Lab., Ames, IA (United States)
  6. Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
  7. Inst. Laue-Langevin (ILL), Grenoble (France)
Publication Date:
OSTI Identifier:
Report Number(s):
IS-J 8311
Journal ID: ISSN 1434-6028
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: European Physical Journal. B, Condensed Matter and Complex Systems; Journal Volume: 86; Journal Issue: 12
Research Org:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States