Document Details

Document Type : Article In Journal 
Document Title :
Influence of Calcium Ions on the Structural and Magnetic Properties of Cd-Mg Ferrites Nanoparticles
Influence of Calcium Ions on the Structural and Magnetic Properties of Cd-Mg Ferrites Nanoparticles
 
Subject : PHYSICS 
Document Language : English 
Abstract : Cadmium magnesium ferrites doped with calcium having the chemical formula Cd0.5Mg0.5-x CaxFe2O4 (0.0 <= x <= 0.3) were prepared by the Co-precipitation method. X-ray diffraction analysis confirmed the formation of a single phase with spinel crystal structure for the samples. The lattice parameter is determined for each composition and has been found to increase from 8.505 angstrom to 8.626 angstrom with increasing calcium concentration. Cation distribution for the studied ferrite system is proposed in terms of the structural and magnetic properties by means of X-ray diffraction (XRD), infrared spectroscopy (IR), vibrating sample magnetometer (VSM) and is found to be reliable. The experimental and theoretical lattice constants show the same trend with increasing calcium concentration indicating the validity of the proposed cation distribution. The analysis of infrared spectra indicates the presence of splitting in the absorption band which may be attributed to the presence of small amounts of Fe2+ ions in the ferrite system. The appearance of a shoulder around 700 cm(-1) suggests the presence of calcium ions in the tetrahedral site. The addition of non magnetic calcium ions in the ferrites suppressed the A-interaction and developed a B B interaction, which is reflected in reducing the saturation magnetization in the present samples. The coercive field (H-c) is also found to increase by increasing of Ca2+ concentration and has been explained on the bases of direct relationship with anisotropy constant 
ISSN : 1533-4880 
Journal Name : JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 
Volume : 12 
Issue Number : 9 
Publishing Year : 1433 AH
2012 AD 
Article Type : Article 
Added Date : Sunday, July 23, 2017 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
H.M Zaki,Zaki,, H.M InvestigatorDoctorate 
S Al-HenitiAl-Heniti, S ResearcherDoctorate 

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