Low-temperature AC microcalorimeter and potentialities of the AC technique

✍ Scribed by Alexander A. Minakov; Oleg V. Ershov

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 371 KB
• Volume: 34
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/s0011-2275(05)80106-7

✦ Synopsis

The potentialities of ac calorimetry are investigated experimentally and theoretically. The effects of the sample-holder and of the heat-leakage into the wires on the measured temperature-oscillations are discussed. It is shown that the effects can lead to incorrect measurements. A proper choice of materials and external parameters enables the construction of the calorimeter with sensitivity of about 10 .8 J/K at 5K. The presented calorimeter gives an opportunity to measure the heat-capacity temperature dependencies in the steady-state mode with a resolution of about 0.01K in the range 1-300K.