Document Details

Document Type : Project 
Document Title :
Effect of chromium ion substitution on the electromagnetic properties of nickel ferrite
تأثير الإستبدال بأيون الكروم على الخواص
 
Subject : Effect of chromium ion substitution on the electromagnetic properties of nickel ferrite 
Document Language : Arabic 
Abstract : Polycrystalline ferrites, of expected industrial applications, with the general formula NiFe2-xCrxO4 (0  x  1) will be synthesized through the thermal decomposition of their respective oxalates mixtures. Differential thermal analysis-thermogravimetry (DTA-TG) will be measured to characterize the oxalates decomposition course up to the ferrite formation. The present study attempts to understand the influence of Cr3+ substitution on the structural, electrical and magnetic properties of nickel ferrite spinel. The structural properties will be studied using X-ray diffraction (XRD) and Fourier transforms infrared spectroscopy (FT-IR) where, the lattice parameter, X-ray density, oxygen parameter, inversion factor and radii of tetrahedral and octahedral sites will be calculated. AC electrical conductivity as a function of frequency and temperature will be measured to predict the possible conduction mechanisms and to calculate the conduction activation energies. The effect of magnetic dilution attributed to the Cr3+ substitution will be also investigated through the measuring of the molar magnetic susceptibilities of different samples as a function of magnetic field intensities and temperature. The observed effective magnetic moments and the values of Curie temperature will then be calculated and compared with the calculated ones. The changes in the structural, electrical and magnetic properties accompanying the magnetic dilution will then be discussed. 
Publishing Year : 1428 AH
2007 AD 
Sponsor Name : King Abdulaziz Univeristy 
Sponsorship Year : 1428 AH
2007 AD 
Added Date : Sunday, July 4, 2010 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
ياسر محمد العنقرىAl-Angari, Yasser MohamedInvestigatorDoctorate 

Files

File NameTypeDescription
 27319.docx docx 

Back To Researches Page