Structural Study of Amorphous Fe89Nd7B4 and Fe89Zr7B4 Alloys by X-ray Diffraction

Abstract

The local ordering structure of amorphous Fe 89 Nd 7 B 4 and Fe 89 Zr 7 B 4 alloys has been determined by anomalous X-ray scattering (AXS) coupled with the conventional X-ray diffraction method using Mo K α radiation. The atomic distance and its coordination number in the nearest neighbor region obtained by a least-squares variational method indicate that the local ordering structure of both amorphous alloys appears to be no closer to the crystalline precipitates than a random packing of the present alloy composition and then any specific different structural feature could not be suggested in these two as-quenched amorphous alloys.