The Variation with Temperature of the Thermoelectric Power of Nickel and Some Copper-Nickel Alloys

The thermoelectric power of pure nickel against platinum has been measured between 0°C and 500°C; similar measurements have been made on two nickel-copper alloys containing respectively 94 and 79 percent nickel. A differential method was used in which the change in thermoelectric force $\Delta E$ corresponding to a small temperature change $\Delta T$ was observed. The results are discussed in relation to Stoner's theory. Although the experimental results have the same general characteristics as those calculated, factors not considered in the simple theory are involved, even at temperatures at which the assumption that the magnetization is due to spin moments only is approximately valid.