Low-temperature differential-thermal analysis to measure variations in entropy

Details Low-temperature differential-thermal analysis to measure variations in entropy Low-temperature differential-thermal analysis to measure variations in entropy

2006-12-13

arxiv.org/abs/physics/0612130v2

Physics

Instrumentation and Detectors

Scientific paper

We describe how we can precisely measure variations in the entropy S of small solid samples below room temperature, as a function the temperature T or the external magnetic field H, respectively. A simple differential-thermal analysis (DTA) technique allows, in principle, for the measurement of variations in S without any instrumental broadening of the data. The method is particularly well suited for the detection of sharp phase transitions in samples of milligram size.

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