|
| |
FIZIKA A 2 (1993) 3, 163-170
 
SPECTRAL STUDIES OF THE SPINEL FERRITE SYSTEM NixZn1-xFe2O4
MOHAMED A. EL HITI and MOHAMED EL SHABASY*
Department of Physics, Faculty of Science, Tanta University, Tanta, Egypt
* Department of Physics, Faculty of Science, Minia University, Minia, Egypt
Received 18 November 1993
Revised manuscript received 3 January 1994
Original scientific paper
X-ray diffraction, DTA, IR and SEM investigations were carried out for a series of
samples of the system NixZn1-xFe2O4 (with
x=0.0, 0.2, 0.4, 0.6, 0.8 and 1.0) prepared using the usual ceramic technique. The
analysis of X-ray diffraction indicates that the samples have single phase with spinel
cubic structure. The lattice constant (a), radius of tetrahedral ions (rtet),
bulk density (D) and theoretical density (Dx) were found to decrease while the
porosity (P) increases as the content of nickel ions (x) increases. SEM images indicate
observable variations between the different compositions. IR absorption spectra showed the
four characteristic peaks of ferrites. The position and intensity of the peaks are
markedly composition dependent.
UDC 538.955
|
