Heat-pulse measurements of specific heat in 36 ms pulsed magnetic fields

A calorimeter for measuring the temperature dependence of specific heat in pulsed magnetic fields is described. An Au0.16Ge0.84?thin-film thermometer and a Ni50Cr50?film heater are employed to obtain the rapid thermal response necessary for the pulsed magnetic-field experiments. The apparatus has been tested in pulsed magnetic fields up to 56.2 T (?0.3 T) and in the low temperature range from 3 to 20?K. To demonstrate the validity of the technique, measurements have been performed on single crystal samples of SiO2?and Cu3Mo2O9.