Magnetization and magnetic anisotropy of R2Fe14B measured on single crystals
Abstract
The temperature dependence of the saturation magnetization and the magnetocrystalline anisotropy field have been measured on single-crystal samples of the R2Fe14B compounds for R=Y, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, and Tm from 4.2 K to the magnetic ordering temperatures. A spin reorientation transition of the Nd2Fe14B type has been found in Ho2Fe14B at 57.6 K in zero field. Another type of spin reorientation caused by anisotropy compensation between the Fe and the R sublattices exists in Er2Fe14B and Tm2Fe14B. The temperature dependence of the angle of the easy direction of magnetization from the c axis has been measured for R=Nd, Ho, Er, and Tm. The relation between the magnetocrystalline anisotropy and the sublattice magnetization is investigated by employing a simplified two-sublattice molecular field model.
- Publication:
-
Journal of Applied Physics
- Pub Date:
- February 1986
- DOI:
- 10.1063/1.336611
- Bibcode:
- 1986JAP....59..873H
- Keywords:
-
- Anisotropy;
- Magnetization;
- Rare Earth Compounds;
- Single Crystals;
- Temperature Dependence;
- Boron Compounds;
- Iron Compounds;
- Magnetometers;
- Solid-State Physics