Title :
Magnetic properties and structural characteristics of a novel Ce 3(Fe0.95Ti0.05)29N4 nitride
Author :
Kalogirou, O. ; Psycharis, V. ; Gjoka, M. ; Devlin, E. ; Niarchos, D.
Author_Institution :
Inst. of Mater. Sci., Attiki, Greece
fDate :
11/1/1995 12:00:00 AM
Abstract :
A new interstitial nitride Ce3(Fe0.95Ti0.05)29N4 with Nd3(Fe,Ti)29-type structure has been synthesized. The X-ray pattern can be indexed according to the monoclinic space group A2/m and the unit cell dimensions are a=10.866(7) Å, b=8.755(6) Å, c=9.924(7) Å, β=97.39(2)° and V=936.23 Å3. The relative lattice expansion upon nitrogenation is 8%. The Curie temperature TC is 670 K and the saturation magnetization MS is 1.22 at 5 K and 1.15 MA/m at 300 K. The anisotropy field HA is 2.67 at 5 K and 1.65 MA/m at 300 K and the average hyperfine field is 32.5 T at 85 K and 29.6 T at 293 K. Both the parent and the nitrided compounds exhibit a complex type of magnetocrystalline anisotropy
Keywords :
Curie temperature; X-ray diffraction; cerium alloys; crystal structure; ferromagnetic materials; hyperfine interactions; iron alloys; lattice constants; magnetic anisotropy; magnetisation; permanent magnets; space groups; thermal expansion; titanium alloys; 293 K; 300 K; 670 K; 85 K; Ce3(Fe0.95Ti0.05)29N 4; Curie temperature; Nd3(Fe,Ti)29-type structure; X-ray pattern; anisotropy field; average hyperfine field; interstitial nitride; magnetic properties; magnetocrystalline anisotropy; monoclinic space group A2/m; nitrogenation; relative lattice expansion; saturation magnetization; structural characteristics; unit cell dimensions; Anisotropic magnetoresistance; Chemical analysis; Iron; Lattices; Magnetic anisotropy; Magnetic properties; Perpendicular magnetic anisotropy; Powders; Saturation magnetization; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
