An arrangement for heat capacity measurements within the temperature range 2.3 to 25 K and magnetic fields up to 4.5 T

✍ Scribed by K. Bohmhammel; H. Mädge; G. Wolf

• Publisher: Elsevier Science
• Year: 1977
• Tongue: English
• Weight: 314 KB
• Volume: 17
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(77)90258-2

✦ Synopsis

A description of a calorimeter which determines the heat capacity of samples of different shape, in the temperature range 2.3 to 25 K and in magnetic fields up to 4.5 7", is presented in this paper. Allen-Bradley~carbon resistors were used as thermometers and calibration was done against a Ge-thermometer. By using a shield, entirely adiabatic conditions of operation were ensured. The cooling of the calorimeter, as well as that of the sample and the shield, was provided by a mechanical heat switch. The reliability of the calorimeter was checked by measuring the heat capacity of a standard copper sample. The paper also presents the results obtained for a pure niobium sample, without a magnetic field and within a magnetic field H = 1.5 T from 4.2 to 12 K.