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Quantum criticality in CePt 1− x Ni x due to hydrostatic and chemical pressure
Author(s) -
Bagrets Nadezda,
Fritsch Veronika,
Grube Kai,
Löhneysen Hilbert v.
Publication year - 2010
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200983067
Subject(s) - hydrostatic pressure , condensed matter physics , ferromagnetism , phase diagram , quantum critical point , materials science , hysteresis , magnetization , hydrostatic equilibrium , alloy , phase (matter) , phase transition , chemistry , physics , thermodynamics , quantum phase transition , metallurgy , magnetic field , quantum mechanics , organic chemistry
We have investigated the possibility of tuning ferromagnetic CePt 1− x Ni x for $x = 0.85$ and 0.9 to a quantum critical point (QCP) by measuring the magnetization between 2 and 300 K on polycrystals under pressures up to 13 kbar. Thus we constructed a T C – p phase diagram for CePt 1− x Ni x with $x = 0.85$ . For the alloy with $x = 0.9$ we show that the ferromagnetic hysteresis loop at 2.5 K is completely suppressed by a hydrostatic pressure of 10.2 kbar. Our findings suggest that Ce(Pt:Ni) can be tuned to the QCP with the application of hydrostatic pressure at considerably lower pressures than pure CePt.