Abstract
The structural and magnetic properties of YFe10−xCoxMo2 alloys (0≤x≤10) have been investigated by means of x-ray diffraction, thermomagnetic analysis, and magnetometry techniques. All the alloys exhibited the tetragonal ThMn12 structure and were almost single phase materials. With the increase of Co content x, Tc increases initially, reaching a maximum at x∼6, followed by a decrease at higher x values. X-ray diffraction analyses on magnetically aligned samples indicate that YFe10Mo2 exhibits an axial easy direction of magnetization (EDM) at room temperature, and the addition of Co initially causes the EDM to deviate gradually from the c axis with increasing x (x≤4). On further increase of Co content (x≥5), the EDM of the YFe10−xCoxMo2 compounds tends to become axial again, reaching a complete uniaxial behavior for the terminal compound YCo10Mo2.