Transition from itinerant metamagnetism to ferromagnetism in UCo1-xOsxAl solid solutions
Transition from itinerant metamagnetism to ferromagnetism in UCo1-xOsxAl solid solutions
Andreev, A. V.; Sebek, J.; Shirasaki, K.; Danis, S.; Gorbunov, D. I.; Yamamura, T.; Vejpravova, J.; Havela, L.; de Boer, F. R.
The influence of substitution of a small amount of Os (< 2 %) on the Co sublattice on the magnetism of the itinerant metamagnet UCoAl is studied on single-crystalline UCo1-xOsxAl compounds with x = 0.002, 0.005 and 0.01. For x = 0.002, the ground state is still paramagnetic, like in UCoAl. The metamagnetic-transition field is 0.37 T, twice lower than in UCoAl. The compound with x = 0.005 is at the border between the paramagnetic and the ferromagnetic ground state. At T = 2 K, it is ferromagnetic, at elevated temperatures a magnetic field is necessary to maintain the magnetic state. In zero field, the ferromagnetic state vanishes at T = 8 K. The compound with x = 0.01 is a ferromagnet with strong uniaxial magnetic anisotropy similar to the previously studied compounds with x = 0.02-0.20.
Involved research facilities
- High Magnetic Field Laboratory (HLD)
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Physica B: Condensed Matter 536(2018), 558-563
DOI: 10.1016/j.physb.2017.09.016
Cited 2 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-26861