Fig. 7: Specific heat data and the temperature-magnetic field phase diagram of NiBO showing a phase transition.

a Magnetic field-dependent specific heats of NiBO from 1.92 to 6.00 K at 0-14 T. b Temperature-magnetic field phase diagram of NiBO from specific heat (C′) and magnetization (χ) including their respective error bars in the temperatures. The green dash line presents the fitting T_N vs (H′−H’_N)^φ. Inset: Plot of ln T_N vs ln (H′−H’_N) including error bars in ln T_N. T_N is the critical temperature. H’_N is the critical field. H′ is the magnetic field. φ is the crossover exponent. Source data are provided as a Source Data file.