Regensburg 2007 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 20: Correlated Electrons - Poster Session

TT 20.51: Poster

Mittwoch, 28. März 2007, 14:00–17:45, Poster A

Magnetisation of ferromagnetic Pr₅Si₃ under hydrostatic pressure — •Stefan Legl¹, Christian Pfleiderer¹, Dmitri Souptel², and Günter Behr² — ¹Physik Department E21, Technische Universität München, D-85748 Garching, Germany — ²IFW Dresden, PF 270116, D-01171 Dresden, Germany

We report the low temperature magnetisation, specific heat and resistivity of single crystal Pr₅Si₃ at ambient pressure under magnetic field up to 9T and temperatures down to 3K.

Pr₅Si₃ orders ferromagnetically below T_c=50K. The ferromagnetic state is strongly anisotropic where the basal plane in the hexagonal crystal structure is the easy magnetic plane.

Under hydrostatic pressures up to 18 kbar the magnetisation for temperatures down to 3K and magnetic fields up to 9T shows only a weak variation of the ordered moment and T_c. Magnetisation loops at low magnetic fields show changes characteristic of the emergence of a magnetic modulation under pressure.