Effect of Annealing Temperature on Rietveld Structure Refinement, Cations Distribution, Optical, Magnetic, and Antimicrobial Activity Properties of CoFe2O4 and MgFe2O4 Nanoparticles Synthesized by Sol-Gel Auto Combustion Method T. Ramesh, Puli Nageswar Rao, P. Venkateswara Rao, N. Pavan Kumar Ecs Journal of Solid State Science and Technology, 2026 Ferrite nanostructures of the type MFe 2 O 4 (M = Co and Mg) were synthesized using the sol–gel auto-combustion method and subsequently annealed at 500 °C and 800 °C to examine the effect of thermal treatment on their physical and functional properties. Structural analysis performed using X-ray diffraction and Rietveld refinement confirmed the formation of a single-phase spinel structure for all samples. The crystallite size, estimated using the Debye–Scherrer and Williamson-Hall methods, was found to increase with annealing temperature, which was further supported by field-emission scanning electron microscopy observations showing grain growth. Optical studies based on UV–Visible absorption spectra revealed an increase in the optical band gap with increasing annealing temperature. Magnetic measurements carried out at room temperature showed enhanced magnetic properties for cobalt ferrites, whereas magnesium ferrites exhibited a reduction in magnetic behavior upon annealing. In addition, antibacterial activity tests against both Gram-positive and Gram-negative bacterial strains demonstrated that thermal treatment significantly influences the antimicrobial performance of the ferrite nanostructures. Overall, the results highlight the critical role of annealing temperature in tailoring the structural, optical, magnetic, and antibacterial properties of ferrite materials for potential multifunctional applications.
Synthesis, structural, morphological, optical, magnetic properties and antibacterial activities of Ni-doped ZnO nanoparticles for optoelectronic and biomedical applications … G Vishnumurthy, A Bhaskar, T Ramesh Journal of Alloys and Compounds, 182493 , 2025 2025 Citations: 6
Structural, optical, ESR, magnetic and anticancer properties of Co1-xZnxFe2O4 (x= 0 to 1) ferrites synthesized by ultrasonication assisted Co-precipitation method T Ramesh, K Ashok, N Basavegowda, K Vagdevi, D Venkatesh, ... Materials Chemistry and Physics 339, 130752 , 2025 2025 Citations: 4
Improved magnetic properties of sol–gel prepared CoFe1. 95Sm0. 05O4 and CoFe1. 95Gd0. 05O4 ferrites M Siddeshwar, KL Chittury, VR Devi, PN Rao, T Ramesh, P Sowjanya, ... Journal of Sol-Gel Science and Technology 114 (3), 1051-1061 , 2025 2025 Citations: 2
Tailoring the structural, optical, magnetic, and dielectric properties of yttrium-substituted magnesium ferrite via microwave hydrothermal synthesis TS Kumar, KK Kumar, T Ramesh, I Radhika, K Praveena, S Katlakunta Materials Chemistry and Physics 336, 130528 , 2025 2025 Citations: 8
Role of dysprosium incorporation on structural and magnetic properties of yttrium iron garnet for high power microwave device applications T Ramesh, K Ashok, JNV Vardhan, PV Rao Ceramics International 51 (13), 18129-18139 , 2025 2025 Citations: 7
Impact of ultrasonic-assisted co-precipitation synthesis and ultrasonication duration on cobalt ferrite nanostructures: A comparative study of structural, morphological … T Ramesh, V Madhavi, PV Rao, K Vagdevi, N Basavegowda, KH Baek Inorganic Chemistry Communications 174, 114035 , 2025 2025 Citations: 15
Transport and electrical studies of PbI2 doped silver ion-conducting glass system ceramic international , 2025 2025
Promising antibiofilm formation: Liquid phase pulsed laser ablation synthesis of Graphene Oxide@Platinum core-shell nanoparticles TR Buthenia A. Hasoon1 , Dahlia M. A. Hasan2 , Kareem H. JawadID3 , Saaud S ... PLOS ONE , 2024 2024 Citations: 15
Investigation of structural and magnetic properties of lead-free NCFO-BTO composites P Naveen, KD Reddy, T Ramesh, VR Reddy, MM Raja, NP Kumar Journal of Superconductivity and Novel Magnetism 37 (8), 1701-1711 , 2024 2024 Citations: 4
Preparation, Structural, and Magnetic Properties of Soft (Ni 0.6 Zn 0.4 Fe 2 O 4 ) and Hard (BaFe 12 O 19 ) Ferrite Composites T Ramesh, P Usha, D Venkatesh, K Sadhana, K Praveena, K Ashok Journal of Superconductivity and Novel Magnetism 37 (8), 1617-1628 , 2024 2024 Citations: 5
Structural, morphological, optical, and magnetic properties of NiO-added NiCo2O4 electrode materials synthesized by sol-gel, Co-precipitation and ultrasonication methods and … K Vamsikrishna, P Usha, D Venkatesh, T Ramesh Ceramics International 50 (17), 30869-30878 , 2024 2024 Citations: 26
Improved electrical properties of Ba1−xCaxCe0.8Nd0.2O3−δ solid oxide fuel cells TR J. Kishore Babu, G. Srinivas Reddy, T.V. Nagalakshmi, K. Ankamma, M.V.N.V ... Inorganic chemistry communications 169, 113105 , 2024 2024 Citations: 2
Multifunctional characterization and anticancer properties of magnetic zinc ferrite nanoparticles by modified ultrasonic assisted co-precipitation method K Ashok, P Usha, N R, T Ramesh, NP Kumar, GM Sulaiman ECS Journal of Solid State Science and Technology 13 (8), 083011 , 2024 2024 Citations: 5
Effect of Ho 3+ Doping on Structural and Magnetic Properties of Multiferroic YbMnO 3 N Kishore Yadav, DR K, N R, S P, PK KN, KS N, R T, PK N ECS Journal of Solid State Science and Technology 13 (7), 073014 , 2024 2024 Citations: 1
Tunable Magnetic and Dielectric Properties of BaMg 0.4 Al 0.4 Fe 11.2 O 19 and SiO 2 Composites for High-Frequency Applications T Ramesh, K Ashok, P Usha, N Pavan Kumar, S K, P K ECS Journal of Solid State Science and Technology 13 (7), 073008 , 2024 2024 Citations: 2
Impact of pH on structural, morphological, optical, and magnetic properties of zinc oxide nanopowders synthesized by co-precipitation method ACPTR Kanakamedala Sowmya, Yarramareddy Aparna Journal of Materials Science: Materials in Electronics 35 (14) , 2024 2024 Citations: 9
Comparison of structural, optical, electrical and magnetic properties between Ni0. 5Co0. 5Gd0. 005Tb0. 005Fe1. 99O4 and Ni0. 5Co0. 5Gd0. 0033Tb0. 0033Dy0. 0033Fe1. 99O4 P Sowjanya, G Thirupathi, MS Kumar, T Ramesh, MVR Reddy, ... Journal of Alloys and Compounds 971, 172623 , 2024 2024 Citations: 9
Influence of Metal (Al, Mg, Sm and Cu) Dopants on Structural, Optical, Magnetic and Antimicrobial Properties of ZnO Nanopowders Synthesized by Co‐Precipitation Method. K Sowmya, Y Aparna, AC Prakash, T Ramesh, A Bhaskar physica status solidi (a) , 2023 2023 Citations: 13
Impact of process parameters and dopant concentration on structural, magnetic, and dielectric properties of dysprosium-doped nickel-zinc ferrites synthesized by microwave … T Ramesh, P Usha, P Neelima, NP Kumar ECS Journal of Solid State Science and Technology 12 (10), 103016 , 2023 2023 Citations: 8
MOST CITED SCHOLAR PUBLICATIONS
Nanocrystalline gadolinium iron garnet for circulator applications T Ramesh, RS Shinde, SR Murthy Journal of magnetism and magnetic materials 324 (22), 3668-3673 , 2012 2012 Citations: 74
CoFe2O4–BaTiO3 multiferroic composites: role of ferrite and ferroelectric phases on the structural, magneto dielectric properties SRM T.Ramesh, V.Rajender Journal of materials science: Materials in electronics , 2017 2017 Citations: 50
Synthesis and characterization of nanocrystalline Ni0. 94Co0. 03Mn0. 04Cu0. 03Fe1. 96− xAlxO4 ferrites for microwave device applications T Ramesh, RS Shinde, SR Murthy Journal of magnetism and magnetic materials 345, 276-281 , 2013 2013 Citations: 44
Microwave-Hydrothermal Synthesis of Y3Fe5O12 Nanoparticles: Sintering Temperature Effect on Structural, Magnetic and Dielectric Properties TRGNRTSRSSVRSRMSA Kumar journal of superconductivity and novel magnetism , 2017 2017 Citations: 28
Y3−xGdxFe5O12: controlled synthesis, characterization and investigation of its magnetic properties RSSSSKSRM T. Ramesh Journal of Materials Science: Materials in Electronics , 2017 2017 Citations: 28
Structural, morphological, optical, and magnetic properties of NiO-added NiCo2O4 electrode materials synthesized by sol-gel, Co-precipitation and ultrasonication methods and … K Vamsikrishna, P Usha, D Venkatesh, T Ramesh Ceramics International 50 (17), 30869-30878 , 2024 2024 Citations: 26
Electromagnetic properties of nanocrystalline Al3+ substituted MgCuMn ferrites synthesized by microwave hydrothermal method T RAMESH, SR MURTHY Bulletin of Materials Science 2016, 1-9 , 2016 2016 Citations: 23
Effect of Dy 3+ substitution on structural and magnetodielectric properties of Mn–Zn ferrites synthesized by microwave hydrothermal method P Neelima, P Usha, T Ramesh, KK Ganta Journal of Materials Science: Materials in Electronics 34 (8), 758 , 2023 2023 Citations: 21
Fabrication of microinductor using Nanocrystalline NiCuZn ferrites S Bharadwaj, T Ramesh, SR Murthy Journal of Electroceramics 31 (1), 81-87 , 2013 2013 Citations: 21
Enhanced microwave absorbing properties of manganese zinc ferrite: polyaniline nanocomposites T Ramesh, K Sadhana, K Praveena Journal of Materials Science: Materials in Electronics 34 (15), 1245 , 2023 2023 Citations: 18
Structural and microwave behavior of Dy3+-substituted Ni0.5Zn0.5DyxFe2-xO4 ferrites SRM P. Neelima, T. Ramesh, P. Raju Journal of materials science: Materials in electronics 32 (2), 1729–1740 , 2021 2021 Citations: 18
A comparative study of antibacterial, anticancer and gas-sensing properties of zinc oxide nanostructures synthesized by different routes TS T. Ramesh, B. Sravanthi, G.Umadevi, K.Ramaiah, B. Anna Tanuja Safala Journal of Materials Science: Materials in Electronics 34 (1), 19 , 2023 2023 Citations: 16
Crystal chemistry, Rietveld analysis, magnetic and microwave properties of Cu-doped strontium hexaferrites N Maramu, G Sriramulu, T Ramesh, D Ravinder, S Katlakunta, TA Babu, ... Journal of Materials Science: Materials in Electronics 32 (8), 10376-10387 , 2021 2021 Citations: 16
Synthesis and characterization of NiCoMnCuFe1. 96O4 for circulator application T Ramesh, RS Shinde, SR Murthy Journal of magnetism and magnetic materials 323 (12), 1593-1598 , 2011 2011 Citations: 16
Impact of ultrasonic-assisted co-precipitation synthesis and ultrasonication duration on cobalt ferrite nanostructures: A comparative study of structural, morphological … T Ramesh, V Madhavi, PV Rao, K Vagdevi, N Basavegowda, KH Baek Inorganic Chemistry Communications 174, 114035 , 2025 2025 Citations: 15
Promising antibiofilm formation: Liquid phase pulsed laser ablation synthesis of Graphene Oxide@Platinum core-shell nanoparticles TR Buthenia A. Hasoon1 , Dahlia M. A. Hasan2 , Kareem H. JawadID3 , Saaud S ... PLOS ONE , 2024 2024 Citations: 15
Ferrite+ Polymer nanocomposites for EMI applications P Raju, T Ramesh, SR Murthy 2015 Citations: 14
Influence of Metal (Al, Mg, Sm and Cu) Dopants on Structural, Optical, Magnetic and Antimicrobial Properties of ZnO Nanopowders Synthesized by Co‐Precipitation Method. K Sowmya, Y Aparna, AC Prakash, T Ramesh, A Bhaskar physica status solidi (a) , 2023 2023 Citations: 13
Preparation and characterization of (100 − x) TiO2 + (x)ZnO nanocomposites for dye-sensitized solar cells using Beta vulgaris and Syzygium cumini natural dye extract TRSRM S Kiran Journal of Materials Science: Materials in Electronics 29 (14), 11712–11718 , 2018 2018 Citations: 11
Impact of pH on structural, morphological, optical, and magnetic properties of zinc oxide nanopowders synthesized by co-precipitation method ACPTR Kanakamedala Sowmya, Yarramareddy Aparna Journal of Materials Science: Materials in Electronics 35 (14) , 2024 2024 Citations: 9