Abstract
We have measured the resistance and magnetoresistance of commercially produced thick film resistors in the range 80 K-15 mK and in fields up to 20 T. These resistors behave similarly to those produced by another manufacturer and characterized recently by a Japanese group. Between 2.5 and 0.1 K the resistance of a 1 kΩ resistor can be fit to R=A exp(B/T 1 4 ) . A 100 kΩ resistor appears to fit a similar expression between 1.6 and 6 K and fits a T −1 2 law from 8 to 80 K. These resistors are very stable upon thermal cycling, have a small magnetoresistance, and should be useful as thermometers over a wide temperature range.
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