Title: Magnesium Stannide

CAS Registry Number: 1313-08-2

Molecular Formula: Mg2Sn

Molecular Weight: 167.32

Percent Composition: Mg 29.05%, Sn 70.95%

Literature References: Prepn by fusion of a stoichiometric mixture of the elements: Winkler, Helv. Phys. Acta 28, 633 (1955); Korenblit, Kolesnikov, Zh. Tekh. Fiz. 26, 941 (1956), C.A. 50, 11475b (1956). Magnetic susceptibility and electrical conductivity measurements: Boltaks, Dokl. Akad. Nauk SSSR 64, 487, 653, (1949), C.A. 43, 4528f, 4533f (1949). Electrical conductivity, magnetoresistance: Frederikse et al., Phys. Rev. 103, 67 (1956).

Properties: Bluish-white, metallic substance. Calcium fluoride crystal structure. mp 778°. Resistivity (25°): 42,000 microhm-cm; thermoelectric power 90 microvolts per degree for 15-100°. Energy of activation: 22,100 cal/mole. Soluble in water, dilute HCl.

Melting point: mp 778°

Use: In semiconductor research.