论文信息 - Low-temperature thermoelectrical power measurements using analogue subtraction

Low-temperature thermoelectrical power measurements using analogue subtraction

A simple, inexpensive analogue subtraction method for measuring thermoelectrical power from 4 to 300 K using two chromel (KP)/Au-7 at% Fe (Au:Fe) thermocouples is described. The average sample temperature is varied by lowering a small insert probe into a liquid-He-storage container or raising the probe. Details concerning the interface of the experiment to a personal computer are presented. Data collected on constantan, Bi2 Sr2 CaCu2 O7+ and carbon-nanotube samples show the utility of the method.

Peter C. Eklund | Gamini Sumanasekera | L Grigorian

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