Abstract
Ag 2Se films produced by the reaction of vacuum-deposited silver films with amorphous selenium films were investigated by electron microscopy and electron diffraction. Among the phases reported so far, tetragonal, orthorhombic and triclinic phases were found to occur as the low temperature phase, depending on the contents of silver and selenium. The crystals grew with the following lattice orientations with respect to the silver crystal: [010] tet[001] Ag and (101) tet(010) Ag; [100] ortho[001] Ag and (001) ortho(100) Ag; [100] tri[001] Ag and (001) tri(100) Ag. The tetragonal phase was transformed to the high temperature b.c.c. phase at about 133 °C, while the orthorhombic and triclinic phases were transformed to a monoclinic phase at about 45 °C and to the b.c.c. phase at about 133°C. The transformation relations between these lattices were also established.
Published Version
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