Abstract
Substitution of Y for U in the itinerant 5f-electron metamagnet, UCoAl, transforms the system to a ferromagnetic state. Application of external hydrostatic pressure above 0.3 GPa suppresses the spontaneous ferromagnetism and restores the paramagnetism with field-induced transition to ferromagnetic state. However, the transition becomes of the second order instead of the first-order one in parent UCoAl.
Acknowledgements
The work of V.S. and A.V.A. is a part of the research plans MSM 0021620834 (Ministry of Education of the Czech Republic) and AVOZ10100520 (Academy of Sciences of Czech Republic), respectively. It has been also supported by grants GACR 202/06/0178 and GAAV IAA100100530.