Kumaresavanji M

@nct.ac.in

Assistant Professor, Department of Physics
National college

https://researchid.co/vanji.hplt

RESEARCH, TEACHING, or OTHER INTERESTS

General Physics and Astronomy, Condensed Matter Physics, Electronic, Optical and Magnetic Materials

Scopus Publications

414

Scholar Citations

Scholar h-index

Scholar i10-index

Scopus Publications

Targeted A and B site double doping in LaMnO<inf>3</inf> perovskites nanoparticles: Tailoring the magnetic behaviour for spintronic applications
G. Sheeba Sharon, M. Kumaresavanji, M. Baneto, K. Ravichandran, K. Sofiya, S. Ravi, and A.T. Ravichandran
Elsevier BV

Actual A-site Gd incorporation into NdFeO<inf>3</inf> perovskite lattice to induce transition in magnetic ordering for spintronic applications
T. Sindhu, M. Kumaresavanji, A. Robert Xavier, K. Sofiya, M. Baneto, K. Ravichandran, S. Ravi, and A.T. Ravichandran
Elsevier BV

Impact of Gd doping on structural and magnetic characteristics of SrFeO<inf>3</inf>perovskite nanomaterial
T Sindhu, A T Ravichandran, A Robert Xavier, K Sofiya, and M Kumaresavanji
IOP Publishing
Abstract The SrFeO3 nanoparticles doped with 5% and 10% Gd were synthesized using the solution combustion method. The phase formation of the synthesized nanoparticles was confirmed by powder x-ray diffraction analysis. Field emission scanning electron microscope and HRTEM were employed to examine the morphology of the samples, revealing well-ordered, agglomerated nanoparticles. Energy dispersive x-ray spectroscopy analysis was conducted on all samples, confirming the presence of the desired elements. X-ray photoelectron spectroscopy confirmed the presence of mixed oxidation states of Fe3+ and Fe4+. Magnetization studies, performed using a SQUID magnetometer, showed ferromagnetic behaviour in all samples, with a significant increase in magnetic moment observed with higher Gd doping. The enhanced magnetic moments and reduced coercivity in Gd-doped SrFeO3 suggest that these materials could be suitable for spintronic applications.

Structural, surface morphological and magnetic properties of Gd-doped BiFeO<inf>3</inf> nanomaterials synthesised by EA chelated solution combustion method
T. Sindhu, A. T. Ravichandran, A. Robert Xavier, and M. Kumaresavanji
Springer Science and Business Media LLC

Studies on growth and characterization of a nonlinear optical crystal: Zinc sulfate-doped L-alanine
S. Thangavel, V. Kathiravan, R. Ashok Kumar, S. Eniya, G. Satheesh Kumar, P. Selvarajan, and M. Kumaresavanji
World Scientific Pub Co Pte Ltd
Single crystals of zinc sulfate doped L-alanine (LAZ) were grown by adopting the slow evaporation technique at room temperature. The crystal structure of LAZ was determined using single-crystal X-ray diffraction. The functional groups of LAZ were identified by FT-IR spectroscopy analysis. UV–Visible–NIR transmittance study was carried out, and the bandgap energy was found. A fluorescence study was performed to get the emission spectrum of the LAZ crystal. The Vickers microhardness test is used to determine the LAZ crystals mechanical behavior. Thermogravimetric and differential thermal analyses have also been studied to investigate the thermal property of the LAZ crystal. The efficiency of the title crystal’s second harmonic generation (SHG) was investigated. The electrical properties were estimated by impedance study.

Crystal growth and Z-scan analysis of picolinic acid potassium sulphate single crystal
R. Rathika, M. Kumaresavanji, A. Robert Xavier, and A. T. Ravichandran
AIP Publishing

Growth, Spectral, Optical, Mechanical, Thermal, Magnetic, Impedance, and Nonlinear Optical Properties of L-Alanine Nickel Chloride Crystal
S. Thangavel, V. Kathiravan, R. Ashok Kumar, T. Muthu Lakshmi, G. Satheesh Kumar, P. Selvarajan, and M. Kumaresavanji
Springer Science and Business Media LLC

Crystal Growth of l-Alanine Oxalic Acid Crystal and its Spectral, NLO, Mechanical, Thermal, and Impedance Properties
S. Thangavel, V. Kathiravan, R. Ashok Kumar, S. Eniya, G. Satheesh Kumar, P. Selvarajan, and M. Kumaresavanji
Springer Science and Business Media LLC

Non-linear optical behaviour and antibacterial activity of semi-organic picolinic acid zinc sulphate single crystal
A.T. Ravichandran, R. Rathika, and M. Kumaresavanji
Elsevier BV

Growth and Z-scan analysis of semi-organic Bis(picolinic acetate) Zinc(II) single crystal for third order NLO applications
A.T. Ravichandran, R. Rathika, and M. Kumaresavanji
Elsevier BV

Structural Confinement Assisted a Robust Superparamagnetic State in MgNi<inf>2</inf>O<inf>3</inf> and MgNi<inf>1.5</inf>Co<inf>0.5</inf>O<inf>3</inf> Nanoparticles at Room Temperature
M. Kanagaraj, I. Phebe Kokila, R. Sofia Jeniffer, P. Sathish Kumar, Helen Annal Therese, M. Kumaresavanji, and C. Sekar
Springer Science and Business Media LLC

Potassium doping induced changes of magnetic and magnetocaloric properties of La<inf>0.78</inf>Cd<inf>0.22−x</inf>K<inf>x</inf>MnO<inf>3</inf> (x = 0.00, 0.10, 0.15 and 0.20) manganites
Imed Messaoui, Kalthoum Riahi, M. Kumaresavanji, Wissem Cheikhrouhou Koubaa, and Abdelwaheb Cheikhrouhou
Elsevier BV

On the role of cationic distribution in determining magnetic properties of Zn<inf>0.7-x</inf>Ni<inf>x</inf>Mg<inf>0.2</inf>Cu<inf>0.1</inf>Fe<inf>2</inf>O<inf>4</inf> nano ferrite
M. Satalkar, S.N. Kane, M. Kumaresavanji, and J.P. Araujo
Elsevier BV

Substrate temperature and molar ratio induced changes on the properties of nebulized spray deposited MnS films
M. Girish, T. Dhandayuthapani, R. Sivakumar, C. Sanjeeviraja, and M. Kumaresavanji
Springer Science and Business Media LLC

Magnetic, magnetocaloric and critical behavior study of La<inf>0.78</inf>Pb<inf>0.22</inf>MnO<inf>3</inf> manganite near room-temperature
Imed Messaoui, M. Kumaresavanji, Kalthoum Riahi, Wissem Cheikhrouhou Koubaa, Mohamed Koubaa, and Abdelwaheb Cheikhrouhou
Elsevier BV

Investigation on magnetic and magnetocaloric properties in the Pb-doped manganites La<inf>0.78</inf>Ca<inf>0.22−x</inf>Pb<inf>x</inf>MnO<inf>3</inf>(x = 0, 0.05 and 0.1)
Imed Messaoui, M. Kumaresavanji, Kalthoum Riahi, Wissem Cheikhrouhou Koubaa, Mohamed Koubaa, and Abdelwaheb Cheikhrouhou
Elsevier BV

Ist group elements codoping effects on magnetic behavior in ZnO:Cu nanoparticles
V. Pazhanivelu, A. Paul Blessington Selvadurai, M. Kumaresavanji, and R. Murugaraj
Elsevier BV

Ordered La<inf>0.7</inf>Sr<inf>0.3</inf>MnO<inf>3</inf> nanohole arrays fabricated on a nanoporous alumina template by pulsed laser ablation
M Kumaresavanji, I T Gomes, A Apolinario, A G Rolo, B G Almeida, A M L Lopes, and J P Araujo
IOP Publishing
Highly ordered nanohole arrays of La 0.7 Sr 0.3 MnO 3 ?> manganite have been synthesized using pulsed laser deposition on nanoporous alumina template. Their structure and phase formation were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), energy dispersive x-ray spectroscopy (EDX) and x-ray diffraction (XRD). The magnetic measurements were performed with respect to temperature and field and exhibit a ferromagnetic to paramagnetic transition at 284 K. In addition, the temperature dependence of electrical resistance was measured at different magnetic fields and an insulating phase throughout all the temperatures was observed. The low temperature ferromagnetic insulating state is discussed by the presence of a canted ferromagnetic state induced by the nanoholes. The present work shows the feasibility of combining both the nanoporous alumina template and pulsed laser ablation for the fabrication of perovskite manganite nanohole arrays which can also be extended to fabricate other multicomponent oxide nanohole materials.

Influence of sol-gel parameters in the fabrication of ferromagnetic La<inf>2/3</inf>Ca<inf>1/3</inf>MnO<inf>3</inf> nanotube arrays
M. Kumaresavanji, C.T. Sousa, A. Apolinario, A.M.L. Lopes, and J.P. Araujo
Elsevier BV

Influence of microwave power on the preparation of NiO nanoflakes for enhanced magnetic and supercapacitor applications
G. Anandha Babu, G. Ravi, T. Mahalingam, M. Kumaresavanji, and Y. Hayakawa
Royal Society of Chemistry (RSC)
Nanoflake-structured NiO were synthesized by a microwave assisted method without the use of additives.

Magnetocaloric effect in La<inf>0.7</inf>Ca<inf>0.3</inf>MnO<inf>3</inf> nanotube arrays with broad working temperature span
M. Kumaresavanji, C. T. Sousa, A. Pires, A. M. Pereira, A. M. L. Lopes, and J. P. Araujo
AIP Publishing
We have studied the magnetic entropy change of highly ordered La0.7Ca0.3MnO3 nanotube arrays synthesized by template assisted sol-gel method in temperatures ranging from 179 to 293 K and in magnetic fields up to 5 T. From the measurements of isothermal magnetization, we have calculated the maximum isothermal magnetic entropy change of −△SM = 1.9 J/kg K around the Curie temperature at 236 K for a field of 5 T. The nanotubes present lower magnetic entropy change compared with their bulk counterpart (−△SM = 4.8 J/kg K) which was prepared by the same sol-gel route. Such diminished magnetic entropy change observed in nanotubes is explained by the disordered magnetic states which are created on the surface sites of nanograins due to the larger surface to volume ratio. However, the nanotubes present an expanded magnetic transition that extends over a wide temperature range and suggest that such manganite nanotubes could be used for magnetic refrigeration with broad working temperature span.

Synthesis and calcinations effects on size analysis of Co<inf>3</inf>O<inf>4</inf> nanospheres and their superparamagnetic behaviors
G. Anandha Babu, G. Ravi, Y. Hayakawa, and M. Kumaresavanji
Elsevier BV

Room temperature magnetocaloric effect and refrigerant capacitance in La<inf>0.7</inf>Sr<inf>0.3</inf>MnO<inf>3</inf> nanotube arrays
M. Kumaresavanji, C. T. Sousa, A. Pires, A. M. Pereira, A. M. L. Lopes, and J. P. Araujo
AIP Publishing
High aspect ratio La0.7Sr0.3MnO3 nanotube (NT) arrays have been synthesized using nitrates based sol-gel precursor by nanoporous anodized aluminum oxide template assisted method. Their phase purity and microstructures were analyzed by X-ray diffraction, scanning electron microscopy, and energy-dispersive x-ray spectroscopy. Magnetocaloric effect (MCE) of as prepared NTs was investigated by means of field dependence magnetization measurements. Significant magnetic entropy change, −△SM = 1.6 J/kg K, and the refrigerant capacitance, RC = 69 J/kg, were achieved near the transition temperature at 315 K for 5 T. For comparison, a bulk sample was also prepared using the same precursor solution which gives a value of −△SM = 4.2 J/kg K and a RC = 165 J/kg. Though the bulk sample exhibits higher △SM value, the NTs present an expanded temperature dependence of −△SM curves that spread over a broad temperature range and assured to be appropriate for active magnetic refrigeration. The diminutive MCE observed in manganite NTs is explained by the increased influence of surface sites of nanograins which affect the structural phase transition occurred by external magnetic field due to the coupling between magnetism and the lattice in manganese perovskites. Our report paves the way for further investigation in 1D manganite nanostructured materials towards applications in such magnetic refrigeration technology or even on hyperthermia/drug delivery.

Reinforcement of double-exchange ferromagnetic coupling by Ru in La <inf>1.24</inf>Sr<inf>1.76</inf>Mn<inf>2-y</inf>Ru<inf>y</inf>O<inf>7</inf> manganite system
M. Kumaresavanji, M.B. Fontes, A.M.L. Lopes, and J.P. Araujo
Elsevier BV

Coulomb blockade and magnetoresistance in granular La<inf>1.32</inf>Sr <inf>1.68</inf>Mn<inf>2</inf>O<inf>7</inf> under hydrostatic pressure
A. Narjis, A. El kaaouachi, L. Limouny, S. Dlimi, M. Errai, A. Sybous, and M. Kumaresavanji
Elsevier BV

RECENT SCHOLAR PUBLICATIONS

Targeted A and B site double doping in LaMnO3 perovskites nanoparticles: Tailoring the magnetic behaviour for spintronic applications
GS Sharon, M Kumaresavanji, M Baneto, K Ravichandran, K Sofiya, ...
Materials Letters 384, 138040 2025

Actual A-site Gd incorporation into NdFeO3 perovskite lattice to induce transition in magnetic ordering for spintronic applications.
T Sindhu, M Kumaresavanji, AR Xavier, K Sofiya, M Baneto, ...
Ceramics International 2025

Impact of Gd doping on structural and magnetic characteristics of SrFeO3 perovskite nanomaterial
T Sindhu, AT Ravichandran, AR Xavier, K Sofiya, M Kumaresavanji
Journal of Physics: Condensed Matter 36 (50), 505809 2024

Structural, surface morphological and magnetic properties of Gd-doped BiFeO₃ nanomaterials synthesised by EA chelated solution combustion method
T Sindhu, AT Ravichandran, AR Xavier, M Kumaresavanji
Applied Physics A 129 (10), 685 2023

Studies on growth and characterization of a nonlinear optical crystal: Zinc sulfate-doped L-alanine
S Thangavel, V Kathiravan, R Ashok Kumar, S Eniya, G Satheesh Kumar, ...
Journal of Nonlinear Optical Physics & Materials 32 (03), 2350024 2023

Crystal growth and Z-scan analysis of picolinic acid potassium sulphate single crystal
R Rathika, M Kumaresavanji, AR Xavier, AT Ravichandran
AIP Conference Proceedings 2861 (1) 2023

Growth, spectral, optical, mechanical, thermal, magnetic, impedance, and nonlinear optical properties of L-alanine nickel chloride crystal
S Thangavel, V Kathiravan, R Ashok Kumar, T Muthu Lakshmi, ...
Journal of Electronic Materials 52 (8), 5642-5651 2023

Crystal Growth of l-Alanine Oxalic Acid Crystal and its Spectral, NLO, Mechanical, Thermal, and Impedance Properties
S Thangavel, V Kathiravan, R Ashok Kumar, S Eniya, G Satheesh Kumar, ...
Journal of Electronic Materials 51 (6), 3068-3077 2022

Non-linear optical behaviour and antibacterial activity of semi-organic picolinic acid zinc sulphate single crystal
AT Ravichandran, R Rathika, M Kumaresavanji
Materials Today: Proceedings 68, 502-505 2022

Growth and Z-scan analysis of semi-organic Bis (picolinic acetate) Zinc (II) single crystal for third order NLO applications
AT Ravichandran, R Rathika, M Kumaresavanji
Journal of Molecular Structure 1224, 129048 2021

Structural Confinement Assisted a Robust Superparamagnetic State in MgNi {sub 2} O {sub 3} and MgNi {sub 1.5} Co {sub 0.5} O {sub 3} Nanoparticles at Room Temperature
IP Kokila, RS Jeniffer, PS Kumar, HA Therese, M Kumaresavanji, C Sekar
Journal of Superconductivity and Novel Magnetism 31 (11) 2018

Structural Confinement Assisted a Robust Superparamagnetic State in MgNi₂O₃ and MgNi_1.5Co_0.5O₃ Nanoparticles at Room Temperature
M Kanagaraj, IP Kokila, RS Jeniffer, PS Kumar, HA Therese, ...
Journal of Superconductivity and Novel Magnetism 31, 3777-3785 2018

Potassium doping induced changes of magnetic and magnetocaloric properties of La0. 78Cd0. 22− xKxMnO3 (x= 0.00, 0.10, 0.15 and 0.20) manganites
I Messaoui, K Riahi, M Kumaresavanji, WC Koubaa, A Cheikhrouhou
Journal of Magnetism and Magnetic Materials 446, 108-117 2018

On the role of cationic distribution in determining magnetic properties of Zn0. 7-xNixMg0. 2Cu0. 1Fe2O4 nano ferrite
M Satalkar, SN Kane, M Kumaresavanji, JP Araujo
Materials Research Bulletin 91, 14-21 2017

Room temperature magnetocaloric effect and refrigerant capacitance in La0. 7Sr0. 3MnO3 nanotube arrays (vol 105, 083110, 2014)
M Kumaresavanji, CT Sousa, A Pires, AM Pereira, AML Lopes, JP Araujo
APPLIED PHYSICS LETTERS 110 (23) 2017

Substrate temperature and molar ratio induced changes on the properties of nebulized spray deposited MnS films
M Girish, T Dhandayuthapani, R Sivakumar, C Sanjeeviraja, ...
Journal of Materials Science: Materials in Electronics 28, 6741-6753 2017

Investigation on magnetic and magnetocaloric properties in the Pb-doped manganites La0. 78Ca0. 22− xPbxMnO3 (x= 0, 0.05 and 0.1)
I Messaoui, M Kumaresavanji, K Riahi, WC Koubaa, M Koubaa, ...
Journal of Alloys and Compounds 693, 705-718 2017

M. Girish, T. Dhandayuthapani, R. Sivakumar, C. Sanjeeviraja &
M Kumaresavanji
J Mater Sci: Mater Electron 28, 6741-6753 2017

Erratum:“Magnetocaloric effect in La0. 7Ca0. 3MnO3 nanotube arrays with broad working temperature span”[J. Appl. Phys.
M Kumaresavanji, CT Sousa, A Pires, AM Pereira, AML Lopes, JP Araujo
Journal of Applied Physics 121, 099901 2017

Magnetic, magnetocaloric and critical behavior study of La0. 78Pb0. 22MnO3 manganite near room-temperature
I Messaoui, M Kumaresavanji, K Riahi, WC Koubaa, M Koubaa, ...
Ceramics International 43 (1), 498-506 2017

MOST CITED SCHOLAR PUBLICATIONS

Influence of microwave power on the preparation of NiO nanoflakes for enhanced magnetic and supercapacitor applications
GA Babu, G Ravi, T Mahalingam, M Kumaresavanji, Y Hayakawa
Dalton Transactions 44 (10), 4485-4497 2015
Citations: 100

Synthesis and calcinations effects on size analysis of Co3O4 nanospheres and their superparamagnetic behaviors
GA Babu, G Ravi, Y Hayakawa, M Kumaresavanji
Journal of Magnetism and Magnetic Materials 375, 184-193 2015
Citations: 62

Room temperature magnetocaloric effect and refrigerant capacitance in La0. 7Sr0. 3MnO3 nanotube arrays
M Kumaresavanji, CT Sousa, A Pires, AM Pereira, AML Lopes, JP Araujo
Applied Physics Letters 105 (8) 2014
Citations: 45

Magnetocaloric effect in La0. 7Ca0. 3MnO3 nanotube arrays with broad working temperature span
M Kumaresavanji, CT Sousa, A Pires, AM Pereira, AML Lopes, JP Araujo
Journal of Applied Physics 117 (10) 2015
Citations: 18

Influence of sol–gel parameters in the fabrication of ferromagnetic La2/3Ca1/3MnO3 nanotube arrays
M Kumaresavanji, CT Sousa, A Apolinario, AML Lopes, JP Araujo
Materials Science and Engineering: B 200, 117-123 2015
Citations: 11

Effects of pressure on charge transport and magnetic properties of la1. 32sr1. 68mn2o7 layered manganite
M Kumaresavanji, MS Reis, YT Xing, MB Fontes
Journal of Applied Physics 106 (9) 2009
Citations: 11

Reinforcement of double-exchange ferromagnetic coupling by Ru in La1. 24Sr1. 76Mn2-yRuyO7 manganite system
M Kumaresavanji, MB Fontes, AML Lopes, JP Araujo
Materials Research Bulletin 51, 92-96 2014
Citations: 10

Coulomb blockade and magnetoresistance in granular La1. 32Sr1. 68Mn2O7 under hydrostatic pressure
A Narjis, L Limouny, S Dlimi, M Errai, A Sybous, M Kumaresavanji
Journal of magnetism and magnetic materials 332, 6-9 2013
Citations: 7

Effects of Ru doping on the transport and magnetic properties of aLa1. 32Sr1. 68Mn2− yRuyO7 layered manganite system
M Kumaresavanji, LLL Sousa, FLA Machado, C Adriano, PG Pagliuso, ...
Journal of Physics: Condensed Matter 22 (23), 236003 2010
Citations: 7

Pressure-enhanced ferromagnetism and metallicity in La_1.24Sr_1.76Mn₂O₇ bilayered manganite system
M Kumaresavanji, EMB Saitovitch, JP Araujo, MB Fontes
Journal of Materials Science 48, 1324-1329 2013
Citations: 6