Structural, dielectric and magnetic properties of Gd substituted manganese ferrite nanoparticles C Murugesan, B Sathyamoorthy, G Chandrasekaran Physica Scripta, 2015 Gd3+ ion-substituted manganese ferrite nanoparticles with the chemical formula MnGdxFe2-xO4 (x = 0.0, 0.05, and 0.1) were synthesized by sol–gel auto combustion method. Thermal stability of the as-prepared sample was analyzed using thermo gravimetric and differential thermal analysis (TG–DTA) and the result reveals that the prepared sample is thermally stable above 300 °C. Structural and morphology studies were performed using powder x-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Indexed PXRD patterns confirm the formation of pure cubic spinel structure. The average crystallite sizes calculated using Sherrer’s formula decreased from 47 nm to 32 nm and lattice constant was enhanced from 8.407 Å to 8.432 Å. The FTIR spectrum of manganese ferrite shows a high frequency vibrational band at 564 cm−1 assigned to tetrahedral site and a low frequency vibrational band at 450 cm−1 assigned to octahedral site which are shifted to 556 cm−1 and 439 cm−1 for Gd3+ substitution and confirm the incorporation of Gd3+ into manganese ferrite. SEM analysis shows the presence of agglomerated spherical shaped particles at the surface. Room temperature dielectric and magnetic properties were studied using broadband dielectric spectroscopy (BDS) and vibrating sample magnetometry (VSM). Frequency dependent dielectric constant, ac conductivity and tan delta were found to increase with Gd3+ ion substitution. The measured values of saturation magnetization decrease from 46.6 emu g−1 to 41 emu g−1 with increase in Gd3+ concentration and coercivity decreases from 179.5 Oe to 143 Oe.
Dielectric properties of Mn0.5Zn0.5Fe 2O4 ferrite nanoparticles C. Murugesan, P. M. Md Gazzali, B. Sathyamoorthy, G. Chandrasekaran Aip Conference Proceedings, 2013 Mn0.5Zn0.5Fe2O4 ferrite nanoparticles have been prepared by sol-gel auto-combustion method with a view to understand the role of oxidizer to fuel ratio (OFR) on the dielectric properties. XRD study shows the formation of cubic ferrite with spinel structure and particle size increases with the increase in concentration of fuel. Dielectric properties and AC conductivity of the sample measured at room temperature are reported. OFR plays a vital role in determining the dielectric properties and AC conductivity of the prepared samples.
RECENT SCHOLAR PUBLICATIONS
Field-induced ferromagnetism and enhanced electrical conductivity in sol-gel synthesized Sm0. 5Ca0. 25Sr0. 25CoO3 nanoparticles B Sathyamoorthy, G Chandrasekaran Materials Science and Engineering: B 323, 118731 , 2026 2026.0
Structural, electrical and magnetic properties of Sr doped nickel ferrite using sol-gel auto combustion route Raja, A Alexander, B Sathyamoorthy, G Chandrasekaran AIP Conference Proceedings 2162 (1), 020075 , 2019 2019.0 Citations: 4
Observation of spin glass ordering and Griffiths-like phase in polycrystalline Sm0.75Sr0.25CoO3 nanoparticles B Sathyamoorthy, A Raja, G Chandrasekaran Journal of Materials Science: Materials in Electronics, 1-10 , 2018 2018.0 Citations: 4
Observation of magneto-electric coupling in Sm0.5Sr0.5CoO3 nanoparticles B Sathyamoorthy, A Raja, G Chandrasekaran Journal of Materials Science: Materials in Electronics , 2017 2017.0 Citations: 7
Structural, dielectric and magnetic properties of Gd substituted manganese ferrite nanoparticles C Murugesan, B Sathyamoorthy, G Chandrasekaran Physica Scripta 90 (8), 085809 , 2015 2015.0 Citations: 41
Enhanced multiferroic properties in La and Ce co-doped BiFeO3 nanoparticles P Priyadharsini, A Pradeep, B Sathyamoorthy, G Chandrasekaran Journal of Physics and Chemistry of Solids 75 (7), 797-802 , 2014 2014.0 Citations: 86
Electrical properties of samarium cobaltite nanoparticles synthesized using Sol–Gel autocombustion route B Sathyamoorthy, PMM Gazzali, C Murugesan, G Chandrasekaran Materials Research Bulletin 53, 169-176 , 2014 2014.0 Citations: 34
Dielectric properties of ferrite nanoparticles C Murugesan, PM Md Gazzali, B Sathyamoorthy, G Chandrasekaran AIP Conference Proceedings 1512 (1), 314-315 , 2013 2013.0 Citations: 8
Structural, Electrical and Magnetic Properties of Sr doped SmCoO3 Nanoparticles B Sathyamoorthy, G Chandrasekaran
Structural, Magnetic and Dielectric Properties of NiFe2O4 Nanoparticles N Somani, B Sathyamoorthy, P Priyadharsini, G Chandrasekaran
Effect of Ca 2 doping on the magnetic and electrical Properties of SmCoO 3 Nanoparticles B Sathyamoorthy, PMM Gazzali, G Chandrasekaran⃰
MOST CITED SCHOLAR PUBLICATIONS
Enhanced multiferroic properties in La and Ce co-doped BiFeO3 nanoparticles P Priyadharsini, A Pradeep, B Sathyamoorthy, G Chandrasekaran Journal of Physics and Chemistry of Solids 75 (7), 797-802 , 2014 2014.0 Citations: 86
Structural, dielectric and magnetic properties of Gd substituted manganese ferrite nanoparticles C Murugesan, B Sathyamoorthy, G Chandrasekaran Physica Scripta 90 (8), 085809 , 2015 2015.0 Citations: 41
Electrical properties of samarium cobaltite nanoparticles synthesized using Sol–Gel autocombustion route B Sathyamoorthy, PMM Gazzali, C Murugesan, G Chandrasekaran Materials Research Bulletin 53, 169-176 , 2014 2014.0 Citations: 34
Dielectric properties of ferrite nanoparticles C Murugesan, PM Md Gazzali, B Sathyamoorthy, G Chandrasekaran AIP Conference Proceedings 1512 (1), 314-315 , 2013 2013.0 Citations: 8
Observation of magneto-electric coupling in Sm0.5Sr0.5CoO3 nanoparticles B Sathyamoorthy, A Raja, G Chandrasekaran Journal of Materials Science: Materials in Electronics , 2017 2017.0 Citations: 7
Structural, electrical and magnetic properties of Sr doped nickel ferrite using sol-gel auto combustion route Raja, A Alexander, B Sathyamoorthy, G Chandrasekaran AIP Conference Proceedings 2162 (1), 020075 , 2019 2019.0 Citations: 4
Observation of spin glass ordering and Griffiths-like phase in polycrystalline Sm0.75Sr0.25CoO3 nanoparticles B Sathyamoorthy, A Raja, G Chandrasekaran Journal of Materials Science: Materials in Electronics, 1-10 , 2018 2018.0 Citations: 4
Field-induced ferromagnetism and enhanced electrical conductivity in sol-gel synthesized Sm0. 5Ca0. 25Sr0. 25CoO3 nanoparticles B Sathyamoorthy, G Chandrasekaran Materials Science and Engineering: B 323, 118731 , 2026 2026.0
Structural, Electrical and Magnetic Properties of Sr doped SmCoO3 Nanoparticles B Sathyamoorthy, G Chandrasekaran
Structural, Magnetic and Dielectric Properties of NiFe2O4 Nanoparticles N Somani, B Sathyamoorthy, P Priyadharsini, G Chandrasekaran
Effect of Ca 2 doping on the magnetic and electrical Properties of SmCoO 3 Nanoparticles B Sathyamoorthy, PMM Gazzali, G Chandrasekaran⃰