A simple calorimeter for fast adiabatic heat capacity measurements from 15 to 300 K based on closed cycle cryocooler
✍ Scribed by I. Catarino; G. Bonfait
- Book ID
- 104112098
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 503 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0011-2275
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✦ Synopsis
A simple, cryogen-free and inexpensive experimental setup for fast heat capacity measurements of solids from 15 to 300 K is presented. It consists of a thermally controlled cell, coupled to the cold ®nger of a Giord±Mac Mahon cryocooler, containing two cheap Pt thin ®lm resistors as thermometers: one is simultaneously the sample holder, the sample heater and the sample thermometer; the other resistor is used for temperature control. This calorimeter allows adiabatic speci®c heat measurements in the whole temperature range in less than one hour. The heat capacity results for a 106 mg copper sample match the tabulated values within 2% for T > 20 K. This system was used to measure the speci®c heat of UFe x Al 12Àx with sample masses as low as 26 mg without performance degradation.