ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The structural and magnetic properties of the off-stoichiometric R2Fe17-type Sm2Fe14−xCoxSi2 compounds with 0≤x≤7 have been investigated by x-ray diffraction, thermomagnetic analysis, and magnetic measurements. Substitution of Co for Fe leads to an increase in Curie temperature, ΔTc=303 K for samples with x from 0 to 7. The saturation magnetization Ms increased with increasing Co content at first and then decreased. A maximum saturation magnetization Ms=124 emu/g was obtained at x about 4. The anisotropy changes from planar x〈4 to uniaxial x≥4 with Ha=23 kOe for x=7. Introduction of N leads to an increase in lattice constants causing a further enhancement in the Curie temperature and anisotropy field. The best properties were obtained for the Sm2Fe10Co4Si2N2.3 compound with Tc=742 K, Ha (300 K)=175 kOe.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.358339
