Magnetic moments and easy direction of heavy rare earth cobalt compounds RCo5

In a previous work measurements of the magnetization and the torque of light rare earth cobalt compounds RCo
5
and YCo
5
were done on their single crystal spheres to obtain some magnetic data such as magnetic moments, easy direction, and anistropy constants. In the present report the same measurements have been performed on the single crystal spheres of heavy rare earth cobalt compounds GdCo
5
, TbCo
5
, DyCo
5
, HoCo
5
, and ErCo
5
for almost the same purpose. For additional details, see Digests of the 1972 Intermag Conference (available from IEEE Headquarters).