Magnetic properties of In 3 + and Cr 3 + substituted Mg - Mn ferrites
نویسندگان
چکیده
Two series of magnesium-manganese ferrites, viz., Mgo.9Mn0.iInxFe2_x04 and Mgo.9Mn0.iCrJ,Fe2_J,04 have been prepared using conventional ceramic technique. Magnetic properties such as saturation magnetization (Ms), Curie temperature (Tc), initial permeability (mi), and magnetic loss factor (tan d), of the above series of samples are presented in this paper. Ms value increases slightly up to a certain concentration of indium ions thereafter it decreases, while in the case of Cr-samples saturation magnetization decreases steadily. The Curie temperature is observed to fall with increasing concentrations of both indium and chromium. The observed variations in Tc and Ms values are explained on the basis of exchange interactions. It is found that compared with Cr + ions, In + ions play more significant role in enhancing the initial permeability. The magnetic loss factor values lie in the range of 0.15-0.75 within the frequency range of 10kHz-10MHz. Explanation for the observed variation in ^ and tand with the increasing concentrations of indium and chromium are given.
منابع مشابه
An Investigation on Synthesis and Magnetic Properties of Manganese Doped Cobalt Ferrite Silica Core-Shell Nanoparticles for Possible Biological Application
In this work, we investigated synthesis, magnetic properties of silica coated metal ferrite, (CoFe2O4)/SiO2 and Manganese doped cobalt ferrite nanoparticles (MnxCo1-xFe2O4 with x= 0.02, 0.04 and 0.06)/SiO2 for possible biomedical application. All the ferrites nanoparticles were prepared by co-precipitation method using FeCl3.6H2O, CoCl2.6H2O and MnCl2.2H2O as precursors, and were silica coated ...
متن کاملAn Investigation on Synthesis and Magnetic Properties of Manganese Doped Cobalt Ferrite Silica Core-Shell Nanoparticles for Possible Biological Application
In this work, we investigated synthesis, magnetic properties of silica coated metal ferrite, (CoFe2O4)/SiO2 and Manganese doped cobalt ferrite nanoparticles (MnxCo1-xFe2O4 with x= 0.02, 0.04 and 0.06)/SiO2 for possible biomedical application. All the ferrites nanoparticles were prepared by co-precipitation method using FeCl3.6H2O, CoCl2.6H2O and MnCl2.2H2O as precursors, and were silica coated ...
متن کاملAssembly: Molecular Recognition Between a Trinuclear Mn Triplesalen Complex and a fac-Triscyano Cr Complex
The reaction of the tris(tetradentate) triplesalen ligand H6talen 2, which provides three salen-like coordination environments bridged in a meta-phenylene arrangement by a phloroglucinol backbone, with Mn salts under aerobic conditions, affords, in situ, the trinuclear Mn triplesalen complex [(talen){Mn(solv)n}3] . This species then reacts with [(Me3tacn)Cr(CN)3] to form the tetranuclear comple...
متن کاملSTRUCTURAL AND OPTICAL PROPERTIES OF Cr-SUBSTITUTED Mg-FERRITE SYNTHESIS BY CO-PRECIPITATION METHOD
A series of Cr substituted Mg-ferrites were synthesized by coprecipitation technique annealed at 900 o C for 6h. XRD analysis technique was used to confirm the formation of synthesized ferrites structure and the particle size estimated by Scherrer formula was found to be lying in the range 42.4 to 84.8 nm. All the prepared samples exhibited inverse cubic spinel structure and lattice parameter f...
متن کاملSynthesis and Structural Characterization of Nickel Substituted Manganese Zinc Nanoferrites
Magnetic oxides are naturally occurring minerals. In order to understand their unique properties and their utilization in technological applications, one must fully understand the correlation between chemistry, structure, particle size and processing. Among the broad classification of magnetic oxides, the spinel ferrites gain much importance because of their low cost, high magnetic permeability...
متن کامل