Tailoring Zinc Ferrite With Mg and Mn: Dual Dopant Synergy for Hybrid Energy Storage Supercapacitor Devices Abu Fahad, Jitendra Kumar Yadav, Bharti Rani, Priyanka Saini, Pragya Mishra, et al. Energy Storage, 2025 Doping ZnFe 2 O 4 with Magnesium (Mg) and Manganese (Mn) promotes beneficial defects by tuning the bandgap and enhances the electronic conductivity, along with improvement in the electrochemical performance. Incorporating these dopants optimizes the crystal structure and provides additional active sites, leading to a superior rate capability and improved charge storage capacity compared to pristine ZnFe 2 O 4 for the supercapacitors (SCs). Zn (1− x ) Mg x Fe (2− x ) Mn x O 4 (ZMFMO), with x = 0.00, 0.05, and 0.10, was synthesized using the sol–gel autocombustion technique and confirmed with the physical characterizations, including the detailed X‐ray diffraction (XRD), Raman and UV–visible spectroscopy, field emission scanning electron microscopy (FESEM), and energy dispersive X‐ray spectroscopy (EDX) analysis. Brunauer–Emmett–Teller (BET) isotherms were analyzed, which show the impact of doping on the surface area. The electrochemical performance of the prepared symmetric coin cell and three‐electrode system was explored using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and galvanostatic charging and discharging (GCD) studies. The three‐electrode characterization suggests high specific capacitance ( C sp ) of 121.5, 130.2, and 162.5 F g −1 for ZMFMO_00, ZMFMO_05, and ZMFMO_10, respectively, while the C sp was found to be 34.8, 36.4, and 47.3 F g −1 at 1 mV s −1 for ZMFMO_00, ZMFMO_05, and ZMFMO_10 in symmetric coin cells, respectively. It also shows excellent charge–discharge characteristics with a 23.9, 28.6, and 43.6 s discharging time for ZMFMO_00, ZMFMO_05, and ZMFMO_10, respectively, at 392 mA g −1 . It illustrates the energy and power density 5.01, 5.08, 8.19 Wh kg −1 and 29.52, 28.09, 28.11 W kg −1 at 39 mA g −1 for ZMFMO_00, ZMFMO_05, and ZMFMO_10 symmetric coin cell devices, respectively. Ex situ XRD analysis was performed to check the electrode stability after long‐term cycling. The results indicated that the developed doped nanomaterial exhibits excellent charge storage characteristics, followed by an LED light demonstration.
Synergistic influence of (Sm, Co) co-doping on the structural, dielectric, optical, and magneto-dielectric properties of 0.7 BiFeO3–0.3 BaTiO3 multiferroic nanocomposites P Mishra, A Fahad, B Khan, P Yadav, P Kumar, A Kumar, MK Singh Journal of Physics and Chemistry of Solids, 113671 , 2026 2026
Tailoring Zinc Ferrite With Mg and Mn: Dual Dopant Synergy for Hybrid Energy Storage Supercapacitor Devices A Fahad, JK Yadav, B Rani, P Saini, P Mishra, A Dixit, MK Singh Energy Storage 7 (8), e70296 , 2025 2025
Studies on Electrical and Optical properties of Bi 12 SiO 20 Synthesized by Wet Route A Kumar, MK Verma, MK Singh, D Tiwary, K Mandal Semiconductors 59 (1), 53-60 , 2025 2025 Citations: 1
Structural, dielectric, magneto-dielectric and optical properties of (Ba, Mn) co-doped NdFeO 3 nanomaterials ABU Fahad, P Yadav, A Pandey, R Biswal, P Mishra, P Kumar, MK Singh Bulletin of Materials Science 47 (3), 156 , 2024 2024 Citations: 8
Tailoring 0.8BiFeO 3 –0.2CaTiO 3 nanocomposite properties via (Dy, Hf) co-doping: a comprehensive study of structural, dielectric, magneto-dielectric and optical … P Yadav, A Pandey, R Biswal, A Fahad, P Mishra, P Kumar, A Kumar, ... Bulletin of Materials Science 47 (3), 152 , 2024 2024 Citations: 1
Enhancing structural, optical and dielectric properties of CuO–ZnO nanocomposites through controlled CuO and ZnO concentration adjustments A Pandey, P Yadav, A Fahad, P Kumar, MK Singh Bulletin of Materials Science 47 (3), 141 , 2024 2024 Citations: 5
Sb dopant-induced modifications in CuO–ZnO nanocomposites: Optical, electrical and magneto-dielectric insights for optoelectronic applications A Pandey, P Yadav, A Fahad, P Kumar, MK Singh Ceramics International 50 (12), 21417-21428 , 2024 2024 Citations: 10
Synthesis, Structural, Dielectric, Magnetic and Magnetodielectric Properties of Graphene Quantum Dots (GQDs) Decorated ZnFe 2 O 4 Hybrid Nanocomposite (GQD … R Biswal, P Yadav, P Kumar, MK Singh Journal of Inorganic and Organometallic Polymers and Materials 34 (6), 2445-2461 , 2024 2024 Citations: 3
Synthesis, structural, optical, dielectric, magnetic and magneto-dielectric properties of CoFe2O4 and graphene quantum dots (GQDs) decorated CoFe2O4 hybrid nanocomposite R Biswal, P Yadav, P Mishra, P Kumar, MK Singh Materials Chemistry and Physics 318, 129271 , 2024 2024 Citations: 15
Universal Dielectric Response in Electronically Correlated Functional Oxides CaCu 3 Ti 4 O 12 , LaFeO 3 , YFe 0.5 Cr 0.5 O 3 and their Nanocomposites: A … S Bhattacharya, P Yadav, MK Singh, M Vasundhara, A Gayen, AK Kundu, ... ChemistrySelect 9 (15), e202400126 , 2024 2024 Citations: 2
Structural and dielectric properties of CaCu 3 Ti 4 O 12 synthesized by sol–gel method A Fahad, P Yadav, A Pandey, B Khan, A Sharma, P Kumar, MK Singh Ferroelectrics 618 (2), 588-598 , 2024 2024 Citations: 3
Structural, dielectric, and optical properties in Mn-modified CaSnO 3 P Yadav, A Sharma, A Pandey, R Biswal, A Fahad, P Kumar, MK Singh Ferroelectrics 618 (2), 334-346 , 2024 2024 Citations: 1
Structural, morphological and electrical properties of hydrothermally synthesized cobalt disulfide (CoS 2 ) nanoparticles A Pandey, P Yadav, R Biswal, A Fahad, B Khan, P Kumar, MK Singh Ferroelectrics 618 (2), 451-463 , 2024 2024 Citations: 10
Investigations of the magneto-dielectric and multiferroic properties in of Bi 0.90 Dy 0.10 FeO 3 -BaTi 0.95 Hf 0.05 O 3 composite P Yadav, A Pandey, B Khan, R Biswal, P Kumar, A Kumar, MK Singh Ferroelectrics 618 (1), 139-153 , 2024 2024 Citations: 1
A comprehensive study of NiFe2O4 and NiFe2O4/rGO (reduced graphene oxide) nanocomposite: synthesis, structural, optical, dielectric, magnetic and magneto-dielectric analysis R Biswal, P Yadav, P Mishra, P Kumar, MK Singh J Mater Sci: Mater Electron 35, 868 , 2024 2024 Citations: 11
Coupling solvent-mediated modulations with the morphological, optical, and antimicrobial attributes of solvothermally synthesized multifunctional Cu2ZnSnS4 nanoparticles A Pandey, P Yadav, AT Pandey, S Tripathi, A Sharma, P Kumar, ... Materials Science and Engineering: B 299, 116962 , 2024 2024 Citations: 10
Synthesis, dielectric, and magneto – dielectric properties of carbon quantum dots/ZnFe 2 O 4 hybrid nanocomposite R Biswal, P Yadav, B Khan, P Kumar, MK Singh Ferroelectrics 616 (1), 53-69 , 2023 2023 Citations: 11
Detailed investigation on structural, optical, dielectric and magneto-dielectric properties with enhanced magneto-impedance characteristic of NdFeO3 nanoparticles P Yadav, A Pandey, B Khan, R Biswal, A Fahad, P Kumar, MK Singh Materials Chemistry and Physics 309, 128424 , 2023 2023 Citations: 24
Structural, optical, dielectric and magneto-dielectric properties of Ca 2+ -modified BiFeO 3 multiferroics P Yadav, A Pandey, B Khan, P Kumar, A Kumar, MK Singh Journal of Materials Science: Materials in Electronics 34 (30), 2043 , 2023 2023 Citations: 10
Energy storage and magnetoelectric coupling in neodymium (Nd) doped BiFeO3-PbTiO3 solid solution M Baloni, RC Sharma, H Singh, B Khan, MK Singh, PC Sati, VN Thakur, ... Journal of Alloys and Compounds 946, 169333 , 2023 2023 Citations: 11
MOST CITED SCHOLAR PUBLICATIONS
Spin-glass transition in single-crystal MK Singh, W Prellier, MP Singh, RS Katiyar, JF Scott Physical Review B—Condensed Matter and Materials Physics 77 (14), 144403 , 2008 2008 Citations: 594
Polarized Raman scattering of multiferroic BiFeO3 epitaxial films with rhombohedral R3c symmetry MK Singh, HM Jang, S Ryu, MH Jo Applied Physics Letters 88 (4) , 2006 2006 Citations: 505
Polarized Raman scattering of multiferroic thin films with pseudo-tetragonal symmetry MK Singh, S Ryu, HM Jang Physical Review B—Condensed Matter and Materials Physics 72 (13), 132101 , 2005 2005 Citations: 319
New magnetic phase transitions in BiFeO 3 MK Singh, RS Katiyar, JF Scott Journal of Physics: Condensed Matter 20 (25), 252203 , 2008 2008 Citations: 241
The Almeida–Thouless line in BiFeO 3 : is bismuth ferrite a mean field spin glass? MK Singh, RS Katiyar, W Prellier, JF Scott Journal of Physics: Condensed Matter 21 (4), 042202 , 2009 2009 Citations: 122
Polarized Raman scattering and lattice eigenmodes of antiferromagnetic NdFeO 3 MK Singh, HM Jang, HC Gupta, RS Katiyar Journal of Raman Spectroscopy: An International Journal for Original Work in … , 2008 2008 Citations: 107
Lattice dynamic investigation of Raman and infrared wavenumbers at the zone center of orthorhombic RFeO 3 (R = Tb, Dy, Ho, Er, Tm) perovskites HC Gupta, M Kumar Singh, LM Tiwari Journal of Raman Spectroscopy 33 (1), 67-70 , 2002 2002 Citations: 85
Critical phenomena at the 140 and 200 K magnetic phase transitions in BiFeO 3 JF Scott, MK Singh, RS Katiyar Journal of Physics: Condensed Matter 20 (32), 322203 , 2008 2008 Citations: 81
Structural and magnetic properties of (In1− xFex) 2O3 (0.0⩽ x⩽ 0.25) system: Prepared by gel combustion method OD Jayakumar, IK Gopalakrishnan, SK Kulshreshtha, A Gupta, KV Rao, ... Applied Physics Letters 91 (5) , 2007 2007 Citations: 62
New Phase Transitions in Perovskite Oxides: BiFeO 3 , SrSnO 3 , and Pb(Fe 2/3 W 1/3 ) 1/2 Ti 1/2 O 3 JF Scott, R Palai, A Kumar, MK Singh, NM Murari, NK Karan, RS Katiyar Journal of the American Ceramic Society 91 (6), 1762-1768 , 2008 2008 Citations: 54
Structural and Electrochemical Characterization of Pure LiFePO 4 and Nanocomposite C‐LiFePO 4 Cathodes for Lithium Ion Rechargeable Batteries A Kumar, R Thomas, NK Karan, JJ Saavedra-Arias, MK Singh, ... Journal of Nanotechnology 2009 (1), 176517 , 2009 2009 Citations: 49
Rietveld refinement, optical, dielectric and ac conductivity studies of Ba-doped SrSnO3 A Kumar, B Khan, V Yadav, A Dixit, U Kumar, MK Singh Journal of Materials Science: Materials in Electronics 31 (19), 16838-16848 , 2020 2020 Citations: 45
New cryogenic phase transitions in SrSnO 3 MK Singh, JW Hong, NK Karan, HM Jang, RS Katiyar, SAT Redfern, ... Journal of Physics: Condensed Matter 22 (9), 095901 , 2010 2010 Citations: 40
Structural, dielectric, magnetic and magneto-dielectric properties of (1− x) BiFeO3–(x) CaTiO3 composites B Khan, A Kumar, P Yadav, G Singh, U Kumar, A Kumar, MK Singh Journal of Materials Science: Materials in Electronics 32 (13), 18012-18027 , 2021 2021 Citations: 36
Raman scattering measurements of phonon anharmonicity in CuAlO2 thin films MK Singh, S Dussan, GL Sharma, RS Katiyar Journal of Applied Physics 104 (11) , 2008 2008 Citations: 35
Phonon anomalies near the magnetic phase transitions in BiFeO3 thin films with rhombohedral R3c symmetry MK Singh, RS Katiyar Journal of Applied Physics 109 (7) , 2011 2011 Citations: 33
Critical slowing down of spin fluctuations in BiFeO 3 JF Scott, MK Singh, RS Katiyar Journal of Physics: Condensed Matter 20 (42), 425223 , 2008 2008 Citations: 31
Microwave dielectric and Raman scattering studies on bismuth zinc niobate thin films K Sudheendran, KC Raju, MK Singh, RS Katiyar Journal of Applied Physics 104 (10) , 2008 2008 Citations: 30
New phase transitions in ceramic SrSnO 3 : Raman scattering analysis and differential thermal analysis MK Singh, NK Karan, RS Katiyar, JF Scott, HM Jang Journal of Physics: Condensed Matter 20 (5), 055210 , 2008 2008 Citations: 30
Structural, microstructure, optical, and electrical properties of Ti-doped CaSnO 3 prepared by Sol-Gel chemical route A Kumar, B Khan, G Singh, A Dixit, U Kumar, MK Singh Physica Scripta 95 (10), 105807 , 2020 2020 Citations: 29
