Heat conduction in sintered copper at low temperatures

✍ Scribed by D.O. Edwards

• Publisher: Elsevier Science
• Year: 1966
• Tongue: English
• Weight: 110 KB
• Volume: 6
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(66)90124-x

✦ Synopsis

where Sag is the thermoelectric power of the silver normal and amounted to no more than 1 per cent of d V/dT. Values of S obtained in this way have an estimated uncertainty of about 4 per cent.

The results are shown in Figure 1, where the solid circles represent the new thermoelectric power data. The solid line is taken from our earlier work, where it was arbitrarily smoothed in the 5-13 ° K region. The dashed line shows the thermoelectric power of gold-0.02 per cent (at.) iron alloy prepared and measured by MacDonald, Pearson, and Templeton. 4 As is apparent in Figure 1, our new data show clearly that there are no anomalies in the thermoelectric power of the Sigmund Cohn alloy of gold-0-02 per cent (at.) iron. In fact, it agrees well with the measurements of MacDonald et al. on the gold-0.02 per cent (at.) iron prepared in their laboratory. We feel that this good agreement indicates the feasibility of manufacturing and calibrating a standard dilute alloy of iron in gold for purposes of thermocouple thermometry at cryogenic temperatures.