Abstract
The polycrystalline MgCrxFe2-xO4 ferrites (0.0 ? x ? 1.0) were prepared by conventional solid state ceramic sintering technique in air at 1300?C. X-ray diffraction experiments were carried out on all the samples in order to characterize the materials at room temperature. The X-ray diffraction patterns showed sharp peaks indicating the formation of single phased cubic spinel structure. The lattice parameters of the samples were determined from the X-ray diffraction data using Nelson-Riley extrapolation method. It was found that the lattice parameter decreased with increasing Cr concen- tration obeying Vegard’s law. Magnetic properties of the samples were measured using an Impedance Analyzer. Real and imaginary parts of the complex permeability, loss factor and quality factor were measured as the function of frequency at three different sintering temperatures 1250?C, 1300?C and 1350?C for all the samples in the frequency range 1 kHz to 13 MHz. Frequency stability of the real part of permeability increases with increasing Cr concentration and also with sintering temperature. Imaginary part of permeability decreases with increasing frequency and increased with increasing both of the Cr content and sintering temperature. Loss factor decreased with increasing frequency while the quality factor (Q) increased with increasing frequency for all the samples. The temperature de- pendence of initial permeability was measured for all the samples sintered at 1300?C. The Curie temperature (Tc) was determined from the -T curves. The values of Tc were found to be 733 K, 657 K, 583 K, 468 K, 400 K and 317 K for x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0, respectively.
Highlights
Spinel ferrites have gained much importance in the recent years because of their interesting electrical and magnetic properties [1]
In the present paper we have reported the structural and magnetic properties of MgCrxFe2–xO4 ferrites prepared in the solid state sintering technique
The polycrystalline ferrites MgCrxFe2–xO4 prepared in the solid state sintering method in air at 1300 ̊C were characterized by X-ray diffraction technique
Summary
Spinel ferrites have gained much importance in the recent years because of their interesting electrical and magnetic properties [1]. Ferrite materials have low conductivity and the order of magnitude of the conductivity greatly influences their dielectric and magnetic behavior [2]. Because of their high resistivity, spinel ferrites are the materials of great interest for high frequency inductive components. In the present paper we have reported the structural and magnetic properties of MgCrxFe2–xO4 ferrites prepared in the solid state sintering technique. The magnetic properties such as permeability, loss factor, quality factor etc. The Curie temperatures (TC) of the individual samples have been reported
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
