Abstract
Single crystals of the NdFe10-xCoxMo2 alloy system (x=0,1,3,5,7,10) have been prepared by the Czochralski technique and studied by x-ray and magnetometry techniques. All of the compounds in this series crystallize in the tetragonal ThMn12-type structure. The single-crystal data support the previous findings on polycrystalline samples, namely, that (1) with increasing Co content, the easy direction of magnetization at 300 K appears to deviate from the c axis for x less than or equal to 3, and becomes axial for x greater than or equal to 5; (2) temperature-induced spin reorientations are observed for x<3; and (3) for n greater than or equal to 5, no temperature induced but field-induced spin reorientations are observed. Single-crystal data also clarify the anomalies observed in the temperature-dependent magnetization data an polycrystalline samples. (C) 1996 American Institute of Physics.