The anisotropy of R sub 2 Fe sub 17 C sub x (R=Sm and Tm)
- Institut fuer Experimentalphysik, Techn. Univ. Vienna, Austria (AT)
- Institute of Metal Research, Academia Sinica, 110015 Shenyang, People's Republic of (China)
- Philips Research Laboratories, 5600JA Eindhoven, (The Netherlands)
The temperature dependence of the anisotropy field of Sm{sub 2}Fe{sub 17}C{sub {ital x}} and Tm{sub 2}Fe{sub 17}C{sub {ital x}} has been determined over the entire uniaxial ferro- or ferrimagnetic temperature range using the singularity point detection technique. The temperature dependence of the ac initial susceptibility was measured on these two systems from 4.2 to 300 K. The Curie temperature, lattice constants, spin-reorientation temperature (of Tm{sub 2}Fe{sub 17}C{sub {ital x}}) and the magnetic anisotropy field are increasing with increasing carbon concentration. A magnetic-phase-like transition'' is observed in Sm{sub 2}Fe{sub 17}C{sub {ital x}} for {ital x}{lt}0.7 at low temperatures, which is proved not to be a spin reorientation. Additionally, the transition temperature increases systematically with increasing carbon concentration. However, the nature of this transition is not yet well understood.
- OSTI ID:
- 5491032
- Journal Information:
- Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 69:8; ISSN 0021-8979; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
CARBIDES
CARBON COMPOUNDS
CURIE POINT
IRON CARBIDES
IRON COMPOUNDS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETIZATION
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SAMARIUM CARBIDES
SAMARIUM COMPOUNDS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
THULIUM CARBIDES
THULIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE