Ferromagnetic spin-glass behaviour in single-crystalline U2 IrSi3

A single crystal of the U-based ternary silicide U2IrSi3 was investigated by means of magnetic, resistivity and heat-capacity measurements performed in wide ranges of temperature and external magnetic fields. The results hint at the formation of a non-trivial magnetic ground state in which ferromagnetic ordering coexists with spin-glass freezing.

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