On the study of Structural properties and Cation distribution of Zn0.75-xNixMg0.15Cu0.1Fe2O4 nano ferrite: Effect of Ni addition

International Conference on Recent Trends in Physics 2016

Satalkar, M.^1 ; Kane, S.N.^1

Magnetic Materials Laboratory, School of Physics, D. A. University, Khandwa road, Indore

452001, India^1

关键词: Cation distributions;    Grain diameter;    Ionic radius;    Nano-ferrites;    Sol-gel auto-combustion;    Structural parameter;    Unit-cell volume;    X-ray density;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/755/1/012050/pdf
DOI  :  10.1088/1742-6596/755/1/012050

来源: IOP

【 摘 要 】

Effect of Ni addition on structural properties and, cation distribution of Zn0.75-xNixMg0.15Cu0.1Fe2O4(x = 0.0, 0.15, 0.30, 0.60, 0.75) ferrites, prepared using sol-gel autocombustion method was studied using X-ray diffraction (XRD) technique. XRD analysis reveals the formation of spinel phase even in dry gel form. The lattice constant (aexp.) decreases with Ni2+ substitution and follows Vegard's law. Scherrer's grain diameter (D) lies within the range of 17.33 - 26.47 nm. Due to difference in the ionic radii of Zn2+and Ni2+significant changes are observed in the structural parameters - unit cell volume (V), hopping length at A (La) and B (Lb) site, and x-ray density (ρXRD). Linear increase in Neel magnetic moment (nBN) with oxygen positional parameter is observed in the studied samples, attributed to simultaneous weakening of A-B interaction and strengthening of the B-B interaction.