Abstract
The electrical resistivity and thermoelectric power of pure Ca and Sr and of intentionally hydrogenated Sr have been determined from 300 K to 850 K. The f.c.c.-b.c.c. transition in Ca was found to occur near 718 K and to have a large effect on the thermopower, while apparently not affecting the resistivity. By comparison, the literature values are of a complex nature, probably owing to a variety of undefined impurities and phases. Pure Sr also undergoes a high temperature f.c.c.-b.c.c. transition, which has a large effect on both resistivity and thermopower. Hydrogenation of Sr causes an additional, h.c.p., phase to appear, which has a very large effect on the resistivity.
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