Back to Search
Start Over
Characterization, structural and magnetic properties of the as-prepared Mg-substituted Cu-nanoferrites.
- Source :
-
Journal of Alloys & Compounds . Jun2015, Vol. 633, p448-455. 8p. - Publication Year :
- 2015
-
Abstract
- The as-prepared Cu 1 − x Mg x Fe 2 O 4 nanoferrites, 0 ⩽ x ⩽ 1, were synthesized using the co-precipitation method. The samples were characterized using the X-ray diffraction, transmission electron microscopy, infrared (IR) and Mössbauer spectroscopy and vibrating sample magnetometer. This study proved that the samples have single-phase cubic spinel structure, nanometric size and superparamagnetic behavior. The nanoparticle and crystallite size ( R ) showed a dependence on the Mg ion content x . The Mössbauer spectra were analyzed and assigned to two magnetic subpatterns and/or two quadrupole doublets due to Fe ions among the tetrahedral A-sites and octahedral B-sites. Six IR absorption bands were observed and assigned to the corresponding vibration modes. The saturation magnetization showed decrease against x and proved dependence on R . The lattice constant, hopping lengths, strain, site characteristic bands and B-site force constant showed x dependence, whereas oxygen parameter and A-site force constant did not. The site ionic radii and edges, density, porosity, Debye temperature, stiffness constant, hyperfine interaction and magnetic parameters were deduced and discussed as functions of x and the cation distributions were estimated. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 633
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 101943006
- Full Text :
- https://doi.org/10.1016/j.jallcom.2015.01.161