Department of Physics

Indian Institute Of Technology Madras , Chennai
Dr. Sethupathi, K
HSB 110
DESIGNATION

Professor

Ph.D.

Moscow State University

CURRENT RESEARCH INTEREST

Low Temperature Physics, Superconductivity, Magnetic materials, Cryogenic insulation

CONTACT

044 - 2257 4875

ksethu@iitm.ac.in

RESEARCH GROUPS

 Current Research :



 Recent Publications :

Sign reversal of anomalous Hall conductivity and magnetoresistance in cubic noncollinear antiferromagnet thin films

J Mukherjee, TS Suraj, H Basumatary, K Sethupathi, KV Raman

Physical Review Materials

Volume: 5 (1) Page: 014201

Year: 2021

Pair‐Emission‐Induced Near‐Infrared Lasing from Ceramic Ga:LaCrO3 Microcrystals at Room Temperature

TR Rajalekshmi, T Dixit, MSR Rao, K Sethupathi

Physica Status Solidi (RRL)–Rapid Research Letters

Volume: 15 (4) Page: 2000519

Year: 2021

Study of Thermometry in Two-Dimensional Sb 2 Te 3 from Temperature-Dependent Raman Spectroscopy

MP Singh, M Mandal, K Sethupathi, MSR Rao, PK Nayak

Nanoscale research letters

Volume: 16 (1) Page: 1-8

Year: 2021

Effective Bandgap Engineering in Perovskite Ferroelectrics by Successive Multiple Doping

S Samanta, M Rath, V Sankaranarayanan, K Sethupathi, MSR Rao

Physica Status Solidi (b)

Volume: 257 (1) Page: 1900272

Year: 2020

Investigation on structural and magnetic properties of Al3+ and Ce3+ doped hexaferrites

G Venkatesh, R Subramanian, T Satish Kumar, J Abuthakir, L John Berchmans, K Sethupathi

Materials Today: Proceedings

Volume: 28 Page: 440-449

Year: 2020

Probing the Griffiths like phase, unconventional dual glassy states, giant exchange bias effects and its correlation with its electronic structure in Pr2− x SrxCoMnO6

Arkadeb Pal, Prajyoti Singh, Vinod K Gangwar, Amish G Joshi, P Khuntia, GD Dwivedi, Prince K Gupta, Mohd Alam, Khyati Anand, K Sethupathi, Anup K Ghosh, Sandip Chatterjee

Journal of Physics: Condensed Matter

Volume: 32 (21) Page: 215801

Year: 2020

On the giant magnetocaloric and mechanical properties of Mn–Fe–P–Si-Ge alloy

S Kavita, G Anusha, P Bhatt, V Suresh, R Vijay, K Sethupathi, R Gopalan

Journal of Alloys and Compounds

Volume: 817 Page: 153232

Year: 2020

Modulations in relaxor nature due to Sr2+ doping in 0.68 PMN-0.32 PT ceramic

Pius Augustine, Muralidhar Miryala, Shibnath Samanta, S Pavan Kumar Naik, K Sethupathi, Masato Murakami, MS Ramachandra Rao

Ceramics International

Volume: 46 (5) Page: 5658-5664

Year: 2020

Effect of interfacial oxidation layer in spin pumping experiments on Ni80Fe20/SrIrO3 heterostructures

TS Suraj, Manuel Müller, Sarah Gelder, Stephan Geprägs, Matthias Opel, Mathias Weiler, K Sethupathi, Hans Huebl, Rudolf Gross, MS Ramachandra Rao, Matthias Althammer

Journal of Applied Physics

Volume: 128 (8) Page: 083903

Year: 2020

Tunable and enhanced Rashba spin-orbit coupling in iridate-manganite heterostructures

TS Suraj, Ganesh Ji Omar, Hariom Jani, Muhammad Mangattuchali Juvaid, Sonu Hooda, Anindita Chaudhuri, Andrivo Rusydi, Kanikrishnan Sethupathi, Thirumalai Venkatesan, Ariando Ariando, MS Ramachandra Rao

Physical Review B

Volume: 102 (12) Page: 125145

Year: 2020

Spin reorientation in antiferromagnetic Dy2FeCoO6 double perovskite

GR Haripriya, TW Heitmann, DK Yadav, GC Kaphle, Madhav Prasad Ghimire, R Pradheesh, J Joshi, P Vora, K Sethupathi, V Sankaranarayanan, HS Nair

Journal of Physics: Condensed Matter

Volume: 33 (2) Page: 025802

Year: 2020

Magnetocaloric and electrical transport properties of selenospinels A0. 9Cu0. 1Cr2Se4 (A= Cd and Zn)

PS Behera, CA Dev, K Sethupathi, PA Bhobe, R Nirmala

Physica B: Condensed Matter

Volume: 573 Page: 7-12

Year: 2019

Electrocaloric Effect with Variations of Diffusivity in Relaxor Ferroelectric Materials

S Samanta, V Sankaranarayanan, K Sethupathi

Journal of Electronic Materials

Volume: 48 (12) Page: 7595-7602

Year: 2019

Contrasting the magnetism in La2-xSrxFeCoO6 (x = 0,1,2) double perovskites: The role of electronic and cationic disorder

GR Haripriya, CMN Kumar, R Pradheesh, LM Martinez, CL Saiz, SR Singamaneni, T Chatterji, V Sankaranarayanan, K Sethupathi, B Kiefer, HS Nair

Physical Review B

Volume: 99 (18) Page: 184411

Year: 2019

Evidence for ferromagnetic clusters at room temperature in Dy and Mn site co-substituted compounds: Dy0. 55Sr0. 45Mn1-xFexO3

K Yadagiri, R Nithya, AT Satya, K Sethupathi

Journal of Alloys and Compounds

Volume: 792 Page: 411-417

Year: 2019

Temperature Dependence of Energy Storage Density and Differential Permittivity and Bandgap Study of Relaxor (Pb,La)Zr0.65Ti0.35O3

S Samanta, V Sankaranarayanan, K Sethupathi

Integrated Ferroelectrics

Volume: 202 (1) Page: 153-162

Year: 2019

Hole doping effect on structure, transport and magnetic properties of Dy1-xBaxMnO3 (0 < x < 1)

K. Yadagiri , R. Nithya , A.T. Satya and K. Sethupathi

Journal of Alloys and Compounds 744 (2018) 82

Year: 2018

Effect of micro-defects and Pb-loss on electrical and optical properties of PLZT ceramic

Shibnath Samanta, V. Sankaranarayanan and K. Sethupathi

Journal of Materials Science: Materials in Electronics (2018), 29:7239-52

Year: 2018

The effect of A-site substitution on the structure and magnetism of Sr2-xPrxFeCoO6 (x = 0, 1, 2)

G. R. Haripriya, Debamitra Chakraborty, R. Pradheesh, V. Sankaranarayanan, and K. Sethupathi

AIP Conference Proceedings (2018); 1953,120053; doi: 10.1063/1.5033118

Year: 2018

Hyperfine interaction and electronic spin fluctuation study on Sr2−xLaxFeCoO6 (x=0, 1, 2) by high-resolution backscattering neutron spectroscopy

T. Chatterji, B. Frick, M. Zamponi, M. Appel, H. S. Nair, R. Pradheesh, G. R. Haripriya, V. Sankaranarayanan, K. Sethupathi.

PHYSICAL REVIEW B 98, 094429 (2018)

Year: 2018

Flux pinning and improved critical current density in superconducting boron doped diamond films

Dinesh Kumar , Shibnath Samanta ,K Sethupathi and MS Ramachandra Rao

J. Phys. Commun. 2 (2018) 045015 https://doi.org/10.1088/2399-6528/aab39f

Year: 2018

Dielectric response of the magnetic perovskite oxide Eu2FeCoO6

Haripriya G. R., Pradheesh R., Sethupathi K., Sankaranarayanan V.

AIP Conference Proceedings Volume: 1942 Page: 130052 DOI: https://doi.org/10.1063/1.5029122

Year: 2018

Band gap, piezoelectricity and temperature dependence of differential permittivity and energy storage density of PZT with different Zr/Ti ratios

Shibnath Samanta, V. Sankaranarayanan, K. Sethupathi

Vacuum 156 (2018) 456–462

Year: 2018

Enhanced ferroelectricity in PLZT ceramic by precise La-doping, minimizing pyrochlore phase and lead loss

Shibnath Samanta,, V. Sankaranarayanan, K. Sethupathi,, M.S. Ramachandra Rao

Vacuum (2018), https://doi.org/10.1016/j.vacuum.2018.08.053

Year: 2018

Effect of successive multiple doping of La, Nb and Fe on structure and lattice vibration of MPB PZT

S Samanta, V Sankaranarayanan, K Sethupathi

Materials Today: Proceedings

Volume: 5 (14), Page: 27919 - 27

Year: 2018

The order of magnetic phase transitions in disordered double perovskite oxides Sm2FeCoO6 and Dy2FeCoO6

GR Haripriya, R Pradheesh, K Sethupathi, V Sankaranarayanan

AIP Advances

Volume: 8 (10) Page: 101340

Year: 2018

Tc suppression and impurity band structure in overdoped superconducting Boron-doped diamond films

D Kumar, M Chandran, DK Shukla, DM Phase, K Sethupathi, MSR Rao

Physica C: Superconductivity and its Applications

Volume: 555 Page: 28-34

Year: 2018

Magnetic glass state and magnetoresistance in SrLaFeCoO6 double perovskite

Pradheesh. R., Harikrishnan S. Nair, Haripriya G. R., Anatoliy Senyshyn, Tapan Chatterji, V. Sankaranarayanan, K. Sethupathi..

Journal of Physics: Condensed Matter V 29, 9, 095801 (2017)

Year: 2017

Magnetic glass state and magnetoresistance in SrLaFeCoO6 double perovskite.

Pradheesh. R., Harikrishnan S. Nair, Haripriya G. R., Anatoliy Senyshyn, Tapan Chatterji, V. Sankaranarayanan, K. Sethupathi

Journal of Physics: Condensed Matter V 29, 9, 095801 (2017)

Year: 2017

Temperature dependent structural studies on the spin correlated system A2FeCoO6 (A= Sm, Eu, Dy and Ho) using synchrotron radiation

Haripriya G. R., Pradheesh R.,M. N. Singh, A. K. Sinha, Sethupathi K., Sankaranarayanan V

AIP Advances 7, 055826 (2017)

Year: 2017

High pressure behavior of superconducting boron doped diamond

Mahmoud Abdel-Hafiez, Dinesh Kumar, R. Thiyagarajan, Q. Zhang, R. T. Howie, K. Sethupathi, O. Volkova, A. Vasiliev, W. Yang, H. K. Mao and M.S. Ramachandra Rao.

Physical Review B 95, 174519 (2017)

Year: 2017

Stabilization heat treatment and functional response of 0.65[Pb (Mg1/3Nb2/3)O3]-0.35[PbTiO3] ceramics

Pius Augustinea,, Shibnath Samanta, Martando Rath, Muralidhar Miryala, K. Sethupathi, Masato Murakami, M.S. Ramachandra Rao

Materials Research Bulletin 95 (2017) 47

Year: 2017

Enhanced electron-phonon coupling and critical current density in rapid thermally quenched MgB2 bulk samples

T. S. Suraj , M. Muralidhar , K. Sethupathi , M.S. Ramachandra Rao , Murakami Masato

AIP Advances 7, 085014 (2017).

Year: 2017

Band gap reduction and redshift of lattice vibrational spectra in Nb and Fe co-doped PLZT

Shibnath Samanta, Miryala Muralidhar, V. Sankaranarayanan, Sethupathi K, M.S. Ramachandra Rao and Masato Murakami

Journal of Materials Science 52, No. 20, (2017)

Year: 2017

Spin reorientation and disordered rare earth magnetism in Ho2FeCoO6

G R Haripriya , Harikrishnan S Nair, R Pradheesh, S Rayaprol, V Siruguri, Durgesh Singh, R Venkatesh, V Ganesan, K Sethupathi and V Sankaranarayanan

J. Phys.: Condens. Matter 29 (2017) 475804

Year: 2017

Influence of Barrier on Corona Discharge Activity in Liquid Nitrogen under AC voltages Adopting UHF Technique

Sarathi, R.; Mittal, L.; Sethupathi, K.

IEEE Transactions on Dielectrics and Electrical Insulation23 (1) 230-236 (2016)

Year: 2016

The Effect Of Particle Size on the Magnetic Properties of Y2FeCoO6

Haripriya G. R., Shashi Priya Balmuchu, Pradheesh R., K. Sethupathi, V. Sankaranarayanan

Proc. of the Intl. Conf. on Nanotechnology for Better Living, 3, No. 1, p. 173 (2016)

Year: 2016

Electrical treeing in XLPE cable insulation at cryogenic temperature under AC voltages

Mittal, L.; Sarathi, R.; Sethupathi, K

Cryogenics (71)

Page: 62 - 67

Year: 2015

Analysis of Surface Discharge Activity in Epoxy Nanocomposites in Liquid Nitrogen under AC Voltage

Sarathi, R ,Aravinth, S and Sethupathi, K

IEEE transactions on dielectrics and electrical insulation (New York, NY)

Volume: 21 Page: 452

Year: 2014

Large magnetoresistance and Jahn Teller effect in Sr2FeCoO6,

Pradheesh R, Harikrishnan S.Nair, V. Sankaranarayanan, K. Sethupathi

Eur. J. Phys. B, 85, 260 (2012)

Year: 2012

Exchange bias and memory effect and in Sr2FeCoO6,

Pradheesh R, Harikrishnan S., V. Sankaranarayanan, K. Sethupathi

Appl. Phys. Lett. , 101, 142401 (2012).

Year: 2012

Catalytic activity of platinum-cobalt alloy nanoparticles decorated functionalized multiwalled carbon nanotubes for oxygen reduction reaction in PEMFC,

Vinayan B P, Imran Jafri R, Rupali Nagar, N. Rajalakshmi, K. Sethupathi and S. Ramaprabhu,

International Journal of Hydrogen Energy, 37 , 412 , (2012)

Year: 2012

Hydrogen storage properties of Pd decorated nitrogen doped graphene nanoplatelets,

Vinayan B P, K.Sethupathi and S.Ramaprabhu,

Journal of Nanoscience and Nanotechnology, 12, 1, (2012)

Year: 2012

Magnetic and magnetoresistive properties of nanocrystalline Pr1-xAxMn1-yCoyO3 (A = Sr, Ca: x = 0.3, y = 0.5).

Rabindra Nath Mahato, K. Sethupathi and V. Sankaranarayanan

AIP Conference Proceedings, 1276, 368 (2011).

Year: 2011

Observation of spin glass state in weakly ferromagnetic Sr2FeCoO6,

Pradheesh R, Harikrishnan. S. Nair, C. M. N. Kumar, R. Nirmala, V. Sankaranarayanan, K. Sethupathi

J. Appl. Phys. Vol. 111, issue 5, 053905 (2011).

Year: 2011

Giant magnetoresistance and table-like magnetocaloric effect in double perovskite oxide PrSrMnCoO6.

Rabindra Nath Mahato, K. Sethupathi, V. Sankaranarayanan, R. Nirmala, A. K. Nigam and S. K. Malik

J. Applied Physics, 109, 07E319 (2011).

Year: 2011

Magnetic and magnetocaloric properties of nanocrystalline perovskite oxides Pr1-xAxMn1-yCoyO3 (A = Ca, Sr: x = 0.3, y = 0.5) manganites.

. N. Mahato, K. Sethupathi, V. Sankaranarayanan, R. Nirmala and S. K. Malik,

Journal of Nanoscience and Nanotechnology 11, 2560-2564 (2011).

Year: 2011

Influence of barrier on partial discharge activity by a conducting particle in liquid nitrogen under AC voltages adopting UHF technique,

R. Sarathi, A. V. Giridhar, and K. Sethupathi,

Cryogenics, 51, 79-84 (2011).

Year: 2011

Understanding the incipient discharge activity in liquid nitrogen under AC voltage by adopting UHF technique,

R. Sarathi, A.V. Giridhar and, K. Sethupathi

IEEE Transactions on Dielectrics and Electrical Insulation , 18, (3), 707 – 713 (2011).

Year: 2011

Large magnetocaloric effect in nanocrystalline Pr0.7Sr0.3MnO3.

R. N. Mahato, K. Sethupathi, V. Sankaranarayanan and R. Nirmala,

Journal of Applied Physics 107, 09A943 (2010).

Year: 2010

Electron field emission from magnetic nanomaterial encapsulated multi-walled carbon nanotubes.

R.B. Rakhi, X. Lim, X. Gao, Y. Wang, A.T.S. Wee, K. Sethupathi, S. Ramaprabhu and C.H. Sow,

Applied Physics A: Materials Science & Processing, 98, 195-202 (2010).

Year: 2010

Colossal magnetoresistance on double perovskite oxide La2CoMnO6,

R. N. Mahato, K. Sethupathi and V. Sankaranarayanan,

Journal of Applied Physics 107(Pt. 2), 09D714/1-09D714/3 (2010).

Year: 2010

Co-existence of giant magnetoresistance and large magnetocaloric effect near room temperature in nanocrystalline La0.7Te0.3MnO3.

R.N. Mahato, K. Sethupathi, V. Sankaranarayanan, R. Nirmala,

Journal of Magnetism and Magnetic Materials, 322, 2537-2540 (2010).

Year: 2010

Analysis of partial discharge activity by a conducting particle in liquid nitrogen under AC voltages adopting UHF technique.

R. Sarathi, A.V. Giridhar and K. Sethupathi,

Cryogenics, 50, 43-49, (2010).

Year: 2010