Influence of rare earth ions (Sm3+, Dy3+) substitution on magnetic and microwave performance of magnesium ferrite

The nano-crystalline rare earth (Sm3+, Dy3+) substituted MgFe2O4 with composition Mg[(Sm)0.6(Dy)0.4]xFe2-xO4 [x varies from 0.0 to 0.3 in steps of 0.05] have been prepared by chemical combustion route. X-ray diffraction analysis confirmed the formation of the spinel cubic phase as a major phase alon...

Full description

Saved in:
Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2021-10, Vol.619, p.413161, Article 413161
Main Authors: Kumbhar, R.N., Shinde, T.J., Kamble, S.A., Mathe, V.L., Ghodake, J.S.
Format: Article
Language:English
Subjects:
Chemicals
Combustion
Composition
Diffraction
Dysprosium
Luminescence
Magnesium ferrites
Magnetic properties
Metal ions
Microwave absorption
Permeability
Perovskites
Rare earth elements
Room temperature
Semiconductor doping
Sm-Dy-Mg ferrite
Substitutes
Trace elements
Voltage standing wave ratios
VSM
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The nano-crystalline rare earth (Sm3+, Dy3+) substituted MgFe2O4 with composition Mg[(Sm)0.6(Dy)0.4]xFe2-xO4 [x varies from 0.0 to 0.3 in steps of 0.05] have been prepared by chemical combustion route. X-ray diffraction analysis confirmed the formation of the spinel cubic phase as a major phase along with the perovskite ortho-ferrite phase as a minor phase in all the samples except MgFe2O4. The room temperature magnetic properties of these samples have been investigated. It has been observed that with an increase in substitution of rare-earth ions (Sm3+, Dy3+), for iron in MgFe2O4, initial permeability increases, attain peak value for the composition with x = 0.15, and decreases for higher substitution concentrations. The microwave absorption performance of the Mg[(Sm)0.6(Dy)0.4]xFe2-xO4 systems have been investigated. The reflection coefficients are found to be higher as compared to MgFe2O4 whereas Voltage Standing Wave Ratio (VSWR) found to be lower. Overall investigations indicate Mg[(Sm)0.6(Dy)0.4]0.15Fe1.85O4 is a promising candidate for microwave device fabrication. •Synthesis of nanocrystalline (Sm,Dy) co-substitution in magnesium ferrite for iron.•Investigation of structural properties in the to elucidate solubility limit of (Sm,Dy) co-substitution.•Investigation of magnetization and initial permeability of the ferrites.•Investigation of microwave absorption properties of the ferrites.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2021.413161