Abstract
The heat capacity of commercial thick-film chip resistors has been measured in the temperature range 0.1–2K. Three different types of resistors used as low temperature thermometers were investigated. The heat capacity of all samples shows a Schottky-type anomaly with the maximum at 0.4K amounting to 1μJ K −1 for the largest unit. We also report the data on the specific heat of a thermometer component, RuO 2, and show that it has no anomalous behaviour. The peak in heat capacity of these resistors puts limitations on using them as thermometers for low temperature calorimeters.
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