Local symmetry around the glass-former sites in amorphous metallic alloys through electric quadrupole effects

Abstract

Through NMR investigation of quadrupolar effects in some amorphous alloys (La75Ga25, Mo70B30, Mo48Ru32B20, Ni78P14B8) the local symmetry is determined around the s-p element sites. A comparison with the corresponding crystalline compounds (La3Ga, Mo2B, Ni3B) which have typically different crystal structures (cubic, tetragonal, orthorhombic, respectively) gives conclusive evidence that the amorphous structure retains to a significant extent the local symmetry of the crystalline counterpart.

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