Alloying and pressure effects on itinerant-electron metamagnetism of the UCoAl-based compounds

0490228 - FZÚ 2019 RIV NL eng J - Článek v odborném periodiku
Mushnikov, N. V. - Andreev, Alexander V. - Arnold, Zdeněk - Shirasaki, K. - Yamamura, T.
Alloying and pressure effects on itinerant-electron metamagnetism of the UCoAl-based compounds.
Journal of Magnetism and Magnetic Materials. Roč. 459, Aug (2018), s. 241-245. ISSN 0304-8853. E-ISSN 1873-4766
Grant CEP: GA ČR GA16-03593S; GA ČR GA15-03777S
Institucionální podpora: RVO:68378271
Klíčová slova: uranium intermetallics * UCoAl * itinerant electron metamagnetism * ferromagnetism * pressure effects
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 2.683, rok: 2018

With the UCo1-xOsxAl single crystals, we studied interplay between alloying and pressure effects on magnetism of the itinerant electron metamagnet UCoAl. The Os alloying for x >= 0.005 switches the UCoAl to ferromagnetism. For the UCo0.995Os0.005Al single crystal, even lowest applied pressure 0.11 GPa is sufficient to suppress ferromagnetism. A sharp metamagnetic transition for various pressures is observed in magnetic fields along the c axis of the crystal. Concentration magnetic phase diagram of the UCo1-xOsxAl, which includes the quantum phase transition from ferromagnetic to metamagnetic state, and P-T-H phase diagram of the UCo0.995Os0.005Al are determined using the data of magnetization measurements at various pressures and temperatures.
Trvalý link: http://hdl.handle.net/11104/0284497