Send to

Choose Destination
Rev Sci Instrum. 2011 Sep;82(9):094901. doi: 10.1063/1.3632116.

LC-circuit calorimetry.

Author information

Physik-Institut der Universität Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland.


We present a new type of calorimeter in which we couple an unknown heat capacity with the aid of Peltier elements to an electrical circuit. The use of an electrical inductance and an amplifier in the circuit allows us to achieve autonomous oscillations, and the measurement of the corresponding resonance frequency makes it possible to accurately measure the heat capacity with an intrinsic statistical uncertainty that decreases as ~t(m)(-3/2) with measuring time t(m), as opposed to a corresponding uncertainty ~t(m)(-1/2) in the conventional alternating current method to measure heat capacities. We have built a demonstration experiment to show the feasibility of the new technique, and we have tested it on a gadolinium sample at its transition to the ferromagnetic state.


Supplemental Content

Full text links

Icon for American Institute of Physics
Loading ...
Support Center