Fig. 3
From: Quantum ferromagnet in the proximity of the tricritical point

Temperature dependence of critical magnetic field μ 0 H c and size of hysteresis Δμ 0 H c at H c for UCo0.995Ru0.005Al for field applied along the c-axis. Filled symbols indicate fields at which a first-order transition is observed (H c determined as an average of field up and field down values), open symbols corresponds to a second-order transition