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Crystal structure and thermoelectric properties of type-I clathrate compounds in the Ba–Ga–Ge system
Journal of Applied Physics
The crystal structure and thermoelectric properties of type-I clathrate compounds in the Ba-Ga-Ge system have been investigated as a function of Ga content. The solid solubility of Ga in the type-I clathrate compounds is determined to be X = 16 when expressed with the formula of Ba 8 Ga X Ge 46−X . As the Ga content increases, the crystal structure changes from a superlattice structure to the normal type-I clathrate structure with the transition occurring at X = 3.5-5. The density of Gedoi:10.1063/1.2355443 fatcat:xwcdm6lcm5hptckjsgjzn4c4v4