1. Magnetism in UCo0.88Ru0.12Ge Studied by Polarized Neutrons.
- Author
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VALIŠKA, M., POSPÍŠIL, J., NÉNERT, G., STUNAULT, A., PROKEŠ, K., and SECHOVSKÝ, V.
- Subjects
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NEUTRONS , *FERROMAGNETISM , *SINGLE crystals , *CRITICAL point (Thermodynamics) , *NEUTRON diffraction , *MAGNETIZATION - Abstract
UCoGe is an archetype of coexisting weak itinerant 5f-electron ferromagnetism (TC ~ 3 K,μs = 0:03μB/f.u.) and superconductivity (TSC ~ 0:6 K) at ambient pressure. The Ru substitution for Co leads to an initial sharp increase of the TC up to the maximum of TC = 8:5 K for x = 0:12, increase of spontaneous magnetic moment and suppression of superconductivity. We have grown the UCo0:88Ru0:12Ge single crystal and studied magnetization along the principal crystallographic axes. To see the microscopic background of these findings we performed a polarized neutron diffraction experiment on D3 diffractometer in ILL. We have found that the Co and U moments are parallel in UCo0:88Ru0:12Ge, in contrast to the antiparallel configuration in UCoGe. This is probably the reason of the spontaneous magnetization increase with Ru doping. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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