X-ray diffraction carried out on random and oriented samples of Pr-3(Fe1-xC
ox)(27.5)Ti-1.5 (x=0, 0.1, 0.2, 0.3) showed that the easy magnetization dir
ection is near the b axis for x=0, 0.2, and 0.3 and is almost along the b a
xis for x=0.1. Magnetic hysteresis data taken on oriented samples showed th
at the anisotropy field (H-A) varies from 12 kOe for x=0 to 25 kOe for x=0.
3 at 300 K. At 10 K, H-A increases from 55 kOe for x=0.1 to 70 kOe for x=0.
3. An indication of spin reorientation transition has been observed at simi
lar to 250 K in x=0.3. (C) 1999 American Institute of Physics. [S0021-8979(
99)56708-X].