Abstract
The structural and magnetic properties of (Sm0.9Pr0.1)3(Fe1−xAlx)27.5Ti1.5 [x=0.1,0.2,0.3] compounds have been investigated by x-ray diffraction, magnetization, and Curie temperature measurements. The lattice parameters are found to increase with increasing Al concentration. The saturation magnetization is seen to decrease with the substitution of Al and is attributed to the modification in the DOS by Al. The Curie temperature increased for low concentrations of Al and then decreased. The easy direction of magnetization (EMD) in all the compounds is normal to the (204) plane. The anisotropy fields decrease with increasing Al concentration.