The addition of from 1.6 to 2.4 percent or more of chromium to gold produces alloys having very small temperature coefficients of electrical resistance. In particular, 2.1 percent of chromium in gold gives an alloy whose resistance has been made independent of temperature, to a few parts in 10 million, in at least the interval 20 to 30C. These alloys are also exceptionally stable in resistance. They, however, have a thermoelectric power against copper which is 3 or 4 times as large as that of manganin. The preparation and heat treatment of some of these alloys are described.
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J.L. Thomas (1934) studied this question.