Short-range magnetic ordering in URh0.7Ru0.3Ge

The magnetic properties of URh0.7Ru0.3Ge were investigated by means of ac susceptibility, dc magnetization, specific heat and electrical resistivity measurements. We observed a maximum of the ac susceptibility at Tmax = 2.9 K and its frequency dependence, but no spontaneous magnetization at 2 K. An...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2007-03, Vol.19 (9), p.096201-096201 (10)
Main Authors: Tran, V H, Miiller, W, Baenitz, M, Steglich, F
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Physics
Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.)
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Summary:The magnetic properties of URh0.7Ru0.3Ge were investigated by means of ac susceptibility, dc magnetization, specific heat and electrical resistivity measurements. We observed a maximum of the ac susceptibility at Tmax = 2.9 K and its frequency dependence, but no spontaneous magnetization at 2 K. An alternative scenario for the observed feature, for example, spin-glass freezing, is not confirmed by dc field dependences of the ac susceptibility and dc magnetization. The data from specific heat and electrical resistivity studies down to 2 K do not suggest long-range magnetic ordering, and point to spin-fluctuation behaviour of the alloy. We have estimated a spin-fluctuation temperature of ~27 K and Stoner enhancement factor of ~490. The experimental data are discussed in the framework of spin-fluctuation theories.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/19/9/096201