Structural analysis and cations distribution of nanocrystalline Ni1 - x Znx Fe1.7 Ga0.3 O4
Heiba, zein Elabidin; Mohamed, Mohamed Bakr; Hamdeh, H. H.; Ahmed, M. A.;
Abstract
Nanostructured Ni1-xZnxFe1.7Ga0.3O4, with x = 0.0, 0.1, 0.2, 0.3, 0.4 and 0.5 were prepared by citrate method and were investigated using X-ray diffraction and Mossbauer spectroscopy. The structure characterized using X-ray powder diffraction and Rietveld method showed that upon increasing Zn2+content, the lattice parameter gradually increases from a = 8.3493 to 8.390 °C and also the crystallite size increases from 4 to 8 nm for x = 0.0 and x = 0.5 respectively. Furthermore, the Mössbauer spectra, measured at 20 K showing spinel magnetic ordering in all the samples, whereas at room temperature, are superposition of collapsing broadened sextet and doublet because of the dependency of particle size. The cation distribution was estimated from the analysis of the Mossbauer spectra as well as Bertaut method, and then confirmed by Rietveld analysis. The results showed that both Zn and Ga ions exclusively occupy the A-site while Ni and Fe ions are distributed over the A- and B-sites.
Other data
Title | Structural analysis and cations distribution of nanocrystalline Ni<inf>1</inf><inf>-</inf><inf>x</inf>Zn<inf>x</inf>Fe<inf>1.7</inf>Ga<inf>0.3</inf>O<inf>4</inf> | Authors | Heiba, zein Elabidin ; Mohamed, Mohamed Bakr; Hamdeh, H. H.; Ahmed, M. A. | Keywords | Cations distribution;Microstructure;Mössbauer;Nickel-Zinc-Gallium nanoferrite | Issue Date | 1-Jan-2015 | Journal | Journal of Alloys and Compounds | Volume | 618 | Start page | 755 | End page | 760 | ISSN | 09258388 | DOI | 10.1016/j.jallcom.2014.08.241 | Scopus ID | 2-s2.0-84907202342 |
Recommend this item
Similar Items from Core Recommender Database
Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.