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Publications in Scientific Journals:

N. Baranov, H. Michor, G. Hilscher, A. Proshkin, A. Podlesnyak:
"Extra T-linear specific heat contribution induced by the f-d-exchange in Gd-Ni binary compounds";
Journal of Physics: Condensed Matter, 20 (2008), 325233-1 - 325233-7.



English abstract:
Specific heat measurements performed for Gd-Ni binary compounds with 1:2, 1:1 and 3:1 stoichiometry have revealed an additional contribution to the coefficient γ of the T-linear term of the low-temperature specific heat in comparison with that obtained for isostructural paramagnetic counterparts R-Ni (R = Y, Lu, La). This extra contribution Δγ is found to grow linearly with increasing Gd concentration from nearly zero for GdNi5 up to Δγ21.5 mJ g-at.−1 K−2 for Gd3Ni. To explain the appearance of Δγ and its dependence on the strength of the f-d exchange interaction in Gd-rich binary compounds with Ni a new mechanism enhancing the effective mass of conduction electrons is suggested. The increased γ value in Gd-containing compounds is attributed to spin fluctuations induced by the f-d exchange interaction in the hybridized 3d-5d electron subsystem.


"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1088/0953-8984/20/32/325233

Electronic version of the publication:
http://www.iop.org/EJ/abstract/0953-8984/20/32/325233


Created from the Publication Database of the Vienna University of Technology.