Abstract
We report the DC magnetisation of the easy-plane ferrimagnet CeSi 1.81 for magnetic field in the range ± 0.5 T as a function of temperature T down to 2.3 K and hydrostatic pressure p up to 14.4 kbar. We observe that the magnetic moment for the crystallographic a-axis vanishes continuously at p c ≈ 13 ± 0.2 kbar . The variation of the ordered moment as function of pressure at low T is qualitatively similar to its variation as function of temperature at p = 0 , hinting at the possible existence of a ferromagnetic quantum critical point at p c .
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