Abstract
The magnetic moment of single-crystal Gd has been measured in fields from 0 to 18 kOe along the , , and directions at temperatures from 1.4 to 900°K. Small anisotropy was observed below the Curie temperature and the easy direction of magnetization was found to be a function of temperature. The absolute saturation magnetic moment was found to be 7.55 Bohr magnetons/atom. The saturation magnetization was observed to follow the law from 200 to 50°K with a deviation from this law observed below 50°K. A ferromagnetic Curie temperature of 293.2°K is reported. The effective Bohr magneton number in the paramagnetic region is 7.98 and the paramagnetic Curie temperature is 317°K. Electrical resistivity measurements were made from 4.2 to 380°K on the -axis and -axis crystals. For the axis, the resistivity changes slope at 293.2°K. The axis exhibits a small maximum at 292°K and a shallow minimum at 340°K.
- Received 25 June 1963
DOI:https://doi.org/10.1103/PhysRev.132.1092
©1963 American Physical Society