Abstract
A furnace and electrical measurement system is described that is capable of a wide range of time-temperature relationships while allowing for the simultaneous measurement of sample temperature and resistance over any 3–4 decades in the range 10−2–107 Ω. The furnace system consists of a servo-controlled push rod moving a sample fixture in a gradient furnace. The servo system is controlled by a cam wheel driven by a stepping motor whose speed can easily be changed during rotation to provide for increased profile versatility. Two- or four-terminal resistance measurements and temperature measurements are possible with four lead wires; each is monitored with a chart recorder. Possible applications and examples of performance are discussed.
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