Short-Range Magnetic Correlations and Parimagnetism in RCo2
- Univ. of Zaragoza (Spain)
- Univ. of Zaragoza (Spain); ARAID Foundation, Zaragoza (Spain); Univ. Center of Defense, Zaragoza (Spain)
- Univ. of Zaragoza (Spain); Inst. Laue-Langevin (ILL), Grenoble (France)
- Helmholtz-Zentrum Berlin for Materials and Energy, Berlin (Germany)
- Ames Lab., Ames, IA (United States)
- Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
- Inst. Laue-Langevin (ILL), Grenoble (France)
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. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013
- Research Organization:
- Ames Lab., Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC02-07CH11358
- OSTI ID:
- 1149485
- Report Number(s):
- IS-J 8311
- Journal Information:
- European Physical Journal. B, Condensed Matter and Complex Systems, Vol. 86, Issue 12; ISSN 1434-6028
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
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