Abstract
Newly developed equipment is described for measuring specific heat between 0.5 and 60 K in magnetic fields up to 17.5 T, using the traditional semi-adiabatic method in combination with a mechanical heat switch. The lower limit found for the heat capacity of sample plus holder amounts to 0.04 mJ/K at 500 mK. Under these conditions, the absolute accuracy is better than 1 μJ/K. Some recent data obtained with this equipment on an UNiAl single crystal are given as an example.