Department of Physics

Indian Institute Of Technology Madras , Chennai
Dr. Santhosh, PN
HSB 110A
DESIGNATION

Professor

Ph.D.

NCL Pune

CURRENT RESEARCH INTEREST

Magnetism in Condensed Matter Physics, Electroceramics, Magnetic Materials Low Temperature Characterization of Advanced Materials

CONTACT

044 - 2257 4882

santhosh@iitm.ac.in

RESEARCH GROUPS

 Current Research :



 Recent Publications :

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

Volume: 500 Page: 166415 DOI: 10.1016/j.jmmm.2020.166415

Year: 2020

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

Volume: 483 Page: 272 DOI: 101016jjmmm201902060

Year: 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

Volume: 279 Page: 120910 DOI: 10.1016/j.jssc.2019.120910

Year: 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

Volume: 259 Page: 73 DOI: 10.1016/j.jssc.2017.11.021

Year: 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

Volume: 265 Page: 417 DOI: 10.1016/j.jssc.2018.06.013

Year: 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

Volume: 8 Page: 101423 DOI: 10.1063/1.5043037

Year: 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

Volume: 773 Page: 770 DOI: 10.1016/j.jallcom.2018.09.171

Year: 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

Volume: 474 Page: 215 DOI: 10.1016/j.jmmm.2018.11.003

Year: 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

Volume: 98 Page: 184417 DOI: 10.1103/PhysRevB.98.184417

Year: 2018

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

Volume: 214 Page: 1600671 DOI: 10.1002/pssa.201600671

Year: 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

Volume: 29 Page: 155802 DOI: 10.1088/1361-648X/aa58c2

Year: 2017

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

Volume: 430 Page: 109 DOI: 10.1016/j.jmmm.2016.12.035

Year: 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

Volume: 230 Page: 11 DOI: doi:10.1016/j.ssc.2016.01.006

Year: 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

Volume: 17 Page: 7086 DOI: 10.1039/c5ce00928f

Year: 2015

Manipulating aggregation of CuO nanoparticles: Correlation between morphology and optical properties

Ganga B G and Santhosh P N

Journal of Alloys and Compounds

Volume: 612 Page: 456 DOI: 10.1016/j.jallcom.2014.05.171

Year: 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

Volume: 47 Page: 355304 DOI: 10.1088/0022-3727/47/35/355304

Year: 2014

4. 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

Volume: 118 Page: 5172 DOI: 10.1021/jp412594b

Year: 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

Volume: 115 Page: 4855995 DOI: 10.1063/1.4855995

Year: 2014

First-principles study of structural, electronic, vibrational, dielectric and elastic properties of tetragonal Ba2YTaO6

Ganeshraj C, Santhosh P.N

Journal of Applied Physics

Volume: 116 Page: 144104 DOI: http://dx.doi.org/10.1063/1.4897452

Year: 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

Volume: 103 Page: 112909 DOI: 10.1063/1.4821190

Year: 2013

Magnetic structure and magnetodielectric effect of YFe0.5Cr0.5O3

Nair V.G., Das A., Subramanian V., Santhosh P.N

Journal of Applied Physics

Volume: 113 Page: 213907 DOI: 10.1063/1.4808459

Year: 2013

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

Volume: 407 Page: 2519 DOI: 10.1016/j.physb.2012.03.059

Year: 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

Volume: 111 Page: 74107 DOI: 10.1063/1.3698301

Year: 2012

Structural, magnetic, transport and magnetocaloric properties of metamagnetic DyMn 0.5Co0.5O3

Ganeshraj C., Pradheesh R., Santhosh P.N

Journal of Applied Physics

Volume: 111 Page: 07A914 DOI: 10.1063/1.3672067

Year: 2012

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)

Year: 2002

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)

Year: 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)

Year: 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)

Year: 2000

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)

Year: 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)

Year: 1999

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)

Year: 1999

Charge-ordering in manganates

Rao C.N.R, Arulraj A, Santhosh P.N, Cheetham A.K

Chem.Mater., 10 2714 (1998)

Year: 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)

Year: 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)

Year: 1998

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)

Year: 1998