1. |
- Noor, Saroaut, et al.
(författare)
-
Magnetic behavior of Cd2+ substituted cobalt ferrites
- 2012
-
Ingår i: Journal of Physics and Chemistry of Solids. - : Elsevier BV. - 0022-3697 .- 1879-2553. ; 73:2, s. 227-231
-
Tidskriftsartikel (refereegranskat)abstract
- The effect of Cd-substitution on the variation of saturation magnetization M,, Curie temperature T-c, and magnetic moments n(B) of Co1-xCdxFe2O4 (x=0.0-1.0 in steps of 0.1) ferrites have been investigated using SQUID magnetometer and impedance analyzer. The samples were prepared by conventional double sintering ceramic technique and found to be single-phase cubic spinel structure by X-ray diffraction. Saturation magnetization M-s, is found to increase with increase of Cd substitution attaining a maximum value at x=0.4 and decreases thereafter. Curie temperature decreases almost linearly with increasing x content up to x=0.7. Samples having x >= 0.8 display complex magnetic behavior with competing antiferromagnetic and ferromagnetic interactions with the manifestation of large hysteresis at low temperature and no sign of saturation. Samples with x > 0.8 show paramagnetic characteristic at T=5 K with no spontaneous magnetization revealed through Arrot-Belov-Kouvel (ABK) plots.
|
|