Structure and magnetic properties of Sm2Fe17-xMnx compounds
Abstract
The effect of Mn substitution for Fe in Sm2 Fe17-x Mnx compounds on the structure and magnetocrystalline anisotropy was studied by x-ray diffraction and magnetization measurements. The compounds prepared have a rhombohedral Th2 Zn17 -type structure single phase except for a small amount of icons/Journals/Common/alpha" ALT="alpha" ALIGN="TOP"/> -Fe for x = 1-4, while x = 5 has Nd3 (Fe,Ti)29 -type monoclinic structure. The Curie temperature TC is found to increase to 430 K for x = 1, then decrease to 255 K for x = 5. The saturation magnetization at 5 K decreases with increasing Mn concentration. Room temperature anisotropy changes from easy planar type to cone type and to easy c -axis type with increasing Mn concentration for x = 1, 2 and 3 respectively. The anisotropy field for x = 3 is about 1 T at 100 K and decreases to 0.4 T at room temperature.
- Publication:
-
Journal of Physics D Applied Physics
- Pub Date:
- March 2000
- DOI:
- 10.1088/0022-3727/33/5/303
- Bibcode:
- 2000JPhD...33..485S