Effect of Gd+3 doping on structural, magnetic and electrical properties of Mn0.5Co0.5Fe2-xGdxO4 nano-particles prepared using combustion synthesis

Ultrafine powders of nano-crystalline rare earth (Gd+3) doped manganese cobalt ferrite with composition Mn0.5Co0.5Fe2-xGdxO4 (x = 0.00, 0.02, 0.04, 0.06, and 0.08) were synthesized using combustion synthesis. Powders obtained through the combustion process were characterized using X-ray diffraction...

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Bibliographic Details
Published in:Journal of alloys and compounds 2020-05, Vol.823, p.153605, Article 153605
Main Authors: Hasolkar, Snehal S., Naik, Pranav P.
Format: Article
Language:English
Subjects:
Cobalt ferrites
Coercivity
Combustion synthesis
DC resistivity
Dielectric constant
Dielectric properties
Doping
Electrical properties
Ferrite
Fourier transforms
Gadolinium
Infrared analysis
Magnetic properties
Magnetic saturation
Magnetometers
Manganese
Particle size
Saturation magnetization
Structural analysis
Transport properties
Ultrafines
Unit cell
X-ray diffraction
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Summary:Ultrafine powders of nano-crystalline rare earth (Gd+3) doped manganese cobalt ferrite with composition Mn0.5Co0.5Fe2-xGdxO4 (x = 0.00, 0.02, 0.04, 0.06, and 0.08) were synthesized using combustion synthesis. Powders obtained through the combustion process were characterized using X-ray diffraction and Fourier transform infrared spectroscopy for structural analysis. Particle size was determined using a Transmission electron microscope (TEM) and was seen to remain in narrow range of 15 nm–30 nm with increasing Gd+3 concentrations. The magnetic alterations triggered by Gd+3 incorporation were studied using a vibrating sample magnetometer (VSM) which showed that the magnetic parameters such as Saturation magnetization (MS) and Coercivity (HC) of the nano-powders depend remarkably on Gd+3 concentrations in the ferrite unit cell. The electrical transport properties such as DC resistivity and dielectric constant were also seen to depend on the extent of rare earth doping in the ferrite material. •Synthesis of Gd+3 doped Mn–Co Ferrite nanoparticles through combustion method.•Increase in saturation magnetization with increasing Gd+3 concentrations.•Marginal increase in room temperature DC resistivity for higher Gd+3 concentrations.•Reduction in Dielectric constant with increase in Gd+3 concentrations.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2019.153605