Faculty Details


Santhosh, PN


HSB 110A

Ph.D. NCL Pune

  •   044 - 2257 4882
  •   santhosh@iitm.ac.in

Areas of Interest

Current Research


Current PhD Students

  • PH19D070    ARUN KUMAR
  • PH21D040    MEHAK

Recent Publications

  • Superparamagnetic clusters at room temperature, anomalous magnetic coercivity and spin-flop transition in novel dilute antiferromagnetic nanoparticles of La2Fe0. 875Cr0. 125GaO6. Ramchandra Dhal, P Neenu Lekshmi, Dhruba Das, PN Santhosh. Journal of magnetism and magnetic materials. 483. 272.
    DOI: 101016jjmmm201902060. 2019.
  • Near room temperature spin reorientation and temperature evolution of magnetic structure in Mn substituted HoFeO3. Karthika Chandran, Pulkit Prakash, P Neenu Lekshmi, Amitabh Das, PN Santhosh. Journal of Magnetism and Magnetic Materials. 500. 166415.
    DOI: 10.1016/j.jmmm.2020.166415. 2019.
  • High temperature spin reorientation, magnetization reversal and magnetocaloric effect in 50% Mn substituted polycrystalline ErFeO3. Karthika Chandran, P Neenu Lekshmi, PN Santhosh. Journal of Solid State Chemistry. 279. 120910.
    DOI: 10.1016/j.jssc.2019.120910. 2019.
  • Observation of Nd ordering in a novel double perovskite Nd2MgRuO6 with weak exchange interaction at B-site. Sharannia, M.P, Kayser, P, Pillai, S.S, Kennedy, B.J, Avdeev, M, Nirmala, R and Santhosh P N. Journal of Solid State Chemistry. 259. 73.
    DOI: 10.1016/j.jssc.2017.11.021. 2018.
  • Exchange bias and spin-phonon coupling in complex glassy layered perovskite SrLaMn0.5Ni0.5O4. Das, R.R, Lakshmi P.N, and Santhosh P N. AIP Advances. 8. 101423.
    DOI: 10.1063/1.5043037. 2018.
  • Competing short-range magnetic correlations, metamagnetic behavior and spin-phonon coupling in Nd2CoMnO6 double perovskite. Das, R.R, Lakshmi P.N, Das S.C and Santhosh P N. Journal of Alloys and Compounds. 773. 770.
    DOI: 10.1016/j.jallcom.2018.09.171. 2018.
  • Giant exchange bias in the single-layered Ruddlesden-Popper perovskite SrLaC o0.5 M n0.5 O4. Das, R.R., Parida, P., Bera, A.K., Chatterji, T., Nanda, B.R.K., and Santhosh, P.N.. Physical Review B. 98. 18441.
    DOI: 10.1103/PhysRevB.98.184417. 2018.
  • Normal and inverse magnetocaloric effect in colossal magnetoresistive electron-doped manganites R0.15Ca0.85MnO3 (R = Y, Gd and Dy). Dhal, L., Andharia, E., Shukla, N., Geetha Kumary, T., Nigam, A.K., Malik, S.K, Santhosh, P.N, and Nirmala, R. Journal of Magnetism and Magnetic Materials. 474. 215.
    DOI: 10.1016/j.jmmm.2018.11.003. 2018.
  • Crystal and magnetic structure of novel Brownmillerite, Ca2Fe0.875Cr0.125GaO5: An approach towards natural GMR layers in bulk metal oxides. Dhal, R, Lekshmi, P.N, Singh, R, Das, A, Sinha, A.K and Santhosh P N. Journal of Solid State Chemistry. 265. 417.
    DOI: 10.1016/j.jssc.2018.06.013. 2018.
  • Observation of magnetization and exchange bias reversals in NdFe0.5Cr0.5O3. Sharannia, M.P, De, S, Singh, R., Das, A, Nirmala, R and Santhosh P N. Journal of Magnetism and Magnetic Materials. 430. 109.
    DOI: 10.1016/j.jmmm.2016.12.035. 2017.
  • Photovoltaic properties of low temperature solution processed earth abundant CuO nanocrystal-based hybrid solar cells. Ganga, B.G, Seetharaman, S.M, Varma, P.C.R, Namboothiry, M.A.G and Santhosh P N. Physica Status Solidi (A) Applications and Materials Science. 214. 1600671.
    DOI: 10.1002/pssa.201600671. 2017.
  • Orbital driven impurity spin effect on the magnetic order of quasi-3D cupric oxide. Ganga, B.G, Santhosh P.N and Nanda, B.R.K. Journal of Physics Condensed Matter. 29. 155802.
    DOI: 10.1088/1361-648X/aa58c2. 2017.
  • Tiny Ni–NiO nanocrystals with exchange bias induced room temperature ferromagnetism. Hanan Al Chaghouri, F. Tuna, P.N. Santhosh, P. John Thomas. Solid State Communications. 230. 11.
    DOI: doi:10.1016/j.ssc.2016.01.006. 2016.
  • Evidence of reduced antiferromagnetic transition in mesocrystals of CuO synthesized by a surfactant-free solution phase method. Ganga B G, Manoj Varma and Santhosh P N. CrystEngComm. 17. 7086.
    DOI: 10.1039/c5ce00928f. 2015.
  • Manipulating aggregation of CuO nanoparticles: Correlation between morphology and optical properties. Ganga B G and Santhosh P N. Journal of Alloys and Compounds. 612. 456.
    DOI: 10.1016/j.jallcom.2014.05.171. 2014.
  • Enhanced electron field emission of one-dimensional highly protruded graphene wrapped carbon nanotube composites. Nayak P, Santhosh P N,Ramaprabhu S. Journal of Physical Chemistry C. 118. 5172.
    DOI: 10.1021/jp412594b. 2014.
  • First-principles study of structural, electronic, vibrational, dielectric and elastic properties of tetragonal Ba2YTaO6. Ganeshraj C, Santhosh P.N. Journal of Applied Physics. 116. 144104.
    DOI: http://dx.doi.org/10.1063/1.4897452. 2014.
  • Ganeshraj C., Santhosh P.N., ‘Electronic and magnetic properties of double perovskite Dy2MnCoO6 by first-principles calculation. Ganeshraj C, Santhosh P.N. Journal of Applied Physics. 115. 4855995.
    DOI: 10.1063/1.4855995. 2014.
  • Electrical surface-resistivity, dielectric resonance, polarization and magnetic properties of Bi0.5Sr0.5FeO3-δ thin films grown by pulsed laser deposition . Balamurugan K., Ramachandran B, Surendra M K, Kumar N H, Rao M S R, Santhosh P N. Journal of Physics D: Applied Physics. 47. 355304.
    DOI: 10.1088/0022-3727/47/35/355304. 2014.
  • Jahn-Teller assisted polaron hopping and associated dielectric response of PrFe0.5Mn0.5O2.95. Ganeshraj C., Kavita S., Mahendiran R., Sharma N., Das A., Santhosh P.N. Applied Physics Letters. 103 . 112909.
    DOI: 10.1063/1.4821190. 2013.
  • Magnetic structure and magnetodielectric effect of YFe0.5Cr0.5O3. Nair V.G., Das A., Subramanian V., Santhosh P.N. Journal of Applied Physics. 113. 213907.
    DOI: 10.1063/1.4808459. 2013.
  • Structural, magnetic, transport and magnetocaloric properties of metamagnetic DyMn 0.5Co0.5O3. Ganeshraj C., Pradheesh R., Santhosh P.N. Journal of Applied Physics. 111. 07A914.
    DOI: 10.1063/1.3672067. 2012.
  • Dielectric resonance and magnetic properties of Fe+3 doped BaSnO3 thin films grown by pulsed laser deposition. Balamurugan K., Senthil Kumar E., Ramachandran B., Venkatesh S., Harish Kumar N., Ramachandra Rao M.S., Santhosh P.N. Journal of Applied Physics. 111. 74107.
    DOI: 10.1063/1.3698301. 2012.
  • Effect of W co-doping on the optical, magnetic and electrical properties of Fe-doped BaSnO3. Balamurugan K., Harish Kumar N., Arout Chelvane J., Santhosh P.N. Physica B: Condensed Matter. 407. 2519.
    DOI: 10.1016/j.physb.2012.03.059. 2012.
  • Verwey transition under oxygen loading in REBaFe2O5+w,(RE = Nd and Sm). P. Karen, P.M.Woodward, P.N. Santhosh, T. Vogt, P.W. Stephens and S. Pagola. J.Solid State Chem.. 167. 2002.
  • Electronic phase transitions and magnetoresistance in a new bilayer manganate, Ca2.5Sr0.5GaMn2O8. P.D. Battle, S. Blundell, P.N. Santhosh, M.J. Rosseinsky, and C. Steer. J.Phys.Cond.Matter.. 14. 13569. 2002.
  • Phase separation over an extended compositional range: Studies of the Ca1-xBixMnO3(x , 0.25) Phase diagram,. P.N. Santhosh, J. Goldberger, P. M.Woodward, T. Vogt, W. Lee and A. Epstein. Phys.Rev. Cond.Matter.. B62. 14928. 2000.
  • Effect of cation size and disorder on the structure and properties of the rare earth cobaltates,Ln0.5A0.5CoO3 (Ln = Rare Earth, A = Sr, Ba) . P.V. Vanitha, Anthony Arulraj, P.N. Santhosh, and C. N. R. Rao . Chem.Mater.. 12. 1666. 2000.
  • Effect of the cation size disorder on charge ordering in rare-earth manganates. Vanitha P.V., Santhosh P.N, Singh R.S, Rao C.N. R, Attfield J.P. Phys. Rev. Cond. Mater.. B59. 13539. 1999.
  • Charge ordering in electron-doped manganates. P.N. Santhosh, Arulraj A, Vanitha P. V., Singh R.S., Sooryanarayana K, Rao C.N. R. J.Phys.:Cond.Matter.. 11. L27. 1999.
  • Synthesis and current-voltage characterization of tin dioxide varistors. Kale A.S, Seal S, Date S.K, Santhosh P.N, Barve R.N. Journal of Vac. Sci. & Tech. A. 17(4). 1196-1200. 1999.
  • Effect of internal pressure on charge-ordered rare earth manganates. Rao C. N. R, Santhosh P.N, Singh R.S, Arulraj A . J.Solid State Chem. . 135. 169. 1998.
  • Charge-ordering in manganates. Rao C.N.R, Arulraj A, Santhosh P.N, Cheetham A.K. Chem.Mater.. 10. 2714. 1998.
  • Charge ordering in the rare-earth manganates: the origin of the extraordinary sensitivity to the average radius of the A-site cations, < rA>.,. Arulraj A, Santhosh P.N, Gopalan R.S, Guha A, Raychaudhuri A.K, Kumar N, Rao C. N. R.. J. Phys.:Condensed Matter.. 10. 8497. 1998.
  • Evolution of the cluster glass system La0.5Sr0.5CoO3. Anil, Kumar P. S.; Nair, Santhosh P. N.; Alias, Joy P.; Date S. K.. J. Mater. Chem. 8. 2245. 1998.


  • 2017 :  (Jan - May) - NS1020 NSO / PH5360 Project / PH5380 Seminar / PHPCT0 Preparatory Course Physics Theory; (Jul - Nov) - PH5690 Applied Magnetics
  • 2018 :  (Jan - May) - NS1020 NSO / PH1020 Physics II; (Jul - Nov) - PHPCL0 Preparatory Course Physics Lab / PHPCT0 Preparatory Course Physics Theory
  • 2019 :  (Jan - May) - EP3291 Engineering Physics Lab IV/ PH5011 Science and Technology of Solid state / PH5340 Dielectric, Magnetic & Optical Materials; (Jul - Nov) - PHPCL0 Preparatory Course Physics Lab / PHPCT0 Preparatory Course Physics Theory
  • 2020 :  (Jan - May) - EP3291 Engineering Physics Lab IV / PH6013 Functional Materials Sensors and Transducers
  • 2021 :  (Jan - May) - PH1020 Physics II ; (Jul - Nov) - PH1020 Physics II / PH4500 Industrial Training
  • 2022 :  (Jan - May) - PH1010 Physics I ; (Jul - Nov) - PH1030 Physics Laboratory I / PH5222 Project / PH5690 Applied Magnetics
  • 2023 :  (Jan - May) - PH1030 Physics Laboratory I