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  • Dr. Sandeep Chhoker
Associate Professor
sandeep.chhoker@jiit.ac.in

Education

M.Sc (IIT Roorkee), PhD (IIT Delhi), 

Biography

Dr. Sandeep Chhoker has worked at Thin Films Laborartory, Physics Department, Indian Institute of Technology, Delhi for  his PhD and completed his doctoral thesis on topic “Growth and field emission properties of carbon nanostructures synthesized by microwave plasma enhanced CVD process” successfully with Prof V. D. Vankar as supervisor. He is also a recipient of JRF and SRF awards from CSIR.. Dr. Sandeep Chhoker  joined JIIT from July 2010 as lecturer in Department of Physics and Material Science and Engineering. He has published several peer reviewed articles and attended international and national conferences. His current area of research is vacuum sysnthesis of hybrid-oxide 1D, 2D nanostructures for optical, sensing and catalytic applications. He is also reviewer of international Journals like Journal of Alloy and Compounds, Ceramic International, Material Chemistry and Physics, Journal of magnetism and magnetic materials, Journal of nanoparticle research, MSE-B  etc.

Professional Achievements

  • Young Scientist scheme (Fast Track) project grant by SERB, DST in 2016
  • DST and CSIR Travel Grant  to Nagano, Japan 2008
  • Best Poster Award, Advanced Nanomaterials  (ANM), IIT Bombay, 2008
  • Best General Secretary award, Student Affair Council , IIT Delhi, 2007
  • CSIR JRF and SRF in 2003 and 2005; Qualified for SPM CSIR (Top 20% of CSIR-JRF 2002)
  • Merit scholarship during MSc 1st year at IIT Roorkee (2001)

Detail of Research project:

  • Project Title: Structurally manipulated stannate nanostructures for optoelectronic and magnetic applications
  • Project cost: Rupees 10.98 (Lakhs)
  • Granting Agency: DST (SERB)
  • Indian Status: None

Publications

International Journals:

  • Shalu Sharma and Sandeep Chhoker, Manoeuvring Morphological, Optical and Electrical Properties of CVD-Grown Ba-Doped SnO 2 Nanostructures via Mn Co-Doping, Journal of Electronic Materials, 1-11, 2020 
  • Shalu Sharma and Sandeep Chhoker, Efficient light harvesting using simple porphyrin-oxide perovskite system,Scientific Reports 10 (1), 1-11, 2020
  • S Sharma and S Chhoker, CVD grown doped and Co-doped SnO2 nanowires and its optical and electrical studies Materials Today Proceedings, 2020
  • S Chauhan, M Kumar, H Pandey, S Chhoker, SC Katyal, Ca–Li substitution driven structural, dynamics of electron density, magnetic and optical properties of BiFeO3 nanoparticles, Journal of Alloys and Compounds 811, 151965, 2019
  • S Joshi, M Kumar, H Pandey, S Chhoker, Optical properties of Gd3+ substituted CoFe2O4 Nanoparticles, AIP Conference Proceedings 2136 (1), 040007, 2019
  • H Pandey, S Chhoker, BC Joshi, D Tripathi, First principle investigation on Co2 TiSiHeulseralloy,AIP Conference Proceedings 2136 (1), 040004, 2019
  • S Sharma, M Kumar, S Chhoker, Parameters dependent synthesis of zinc stannate nanowires using CVD and its porphyrin dye loaded optical studies, Vacuum 161, 201-208, 2019
  • Shalu Sharma, Himanshu Pandey, Manoj Kumar and Sandeep Chhoker “Room temperature ferromagnetism and electrical properties of Mn doped Zn2 SnO4 nanorods”. Superlattice and Microstructure 120 (2018), 160-169 [Indexed in Scopus, Impact factor: 2.2]
  • Shalu Sharma and Sandeep Chhoker “Optical and electrical studies of barium stannate micro rods synthesised via chemical process” 2009 (1), (2018) 020014 [Indexed in Scopus]
  • Shalu Sharma andSandeep Chhoker “Surface activation of self assembled carbon nanoflakes” 2009 (1), (2018)  020024, [Indexed in Scopus]
  • Sunil Chauhan, Manoj Kumar, Himanshu pandey and Sandeep Chhoker “Effect of ca and Ni Co-substitution on structural and magnetic properties of BiFeO3 nanoaprticles” 2009 (1), (2018), 020032, [Indexed in Scopus]
  • Manoj Kumar, Sandeep Chhoker, Seema Joshi, Arun Kumar, Mahavir Singh (2017) “Effect of Gd3+ substitution on structural, magnetic, dielectric and optical properties of nanocrystalline CoFe2O4” , Journal of Mag.. & Mag. Mat ,426, 252
  • Sunil Chauhan, Manoj Kumar, Sandeep Chhoker, S. C. Katyal and M. Singh (2016) “Substitution driven structural and magnetic transformation in Ca-doped BiFeO3 nanoaprticles” RSC advances, 4, 43080
  • Sunil Chauhan, Manoj Kumar, Sandeep Chhoker And S. C. Katyal,(2016)  “A comparative study on structural, vibrational, dielectric and magnetic properties of microcrysatalline BiFeO3, nanocrystalline BiFeO3 and core-shell structured BiFeO3@SiO2 nanoparticles” J. Alloys and  compounds, 666,  454
  • Sunil Chauhan, Manoj Kumar, Sandeep Chhoker, SC Katyal, Mukesh Jewariya, BN Suma, Girish Kunte(2015 ) “Structural modification and enhanced magnetic properties with two phonon modes in Ca-Co codoped BiFeO3 nanoparticlesCeramics International  41, 14306
  • Prakash Chandra Sati,  Manoj Kumar,  Sandeep Chhoker (2015) “Phase evolution, magnetic, optical, and dielectric properties of Zr substituted Bi0.9Gd0.1FeO3 multiferroics”, Journal of The American Ceramic Society, 98, 1884
  • Prakash Chandra Sati, Manoj Kumar and Sandeep Chhoker, (2015) “Raman spectroscopy and enhanced magnetic and dielectric properties of Pr and Ti codoped BiFeO3 ceramics”, Journal of Materials Science: Materials in Electronics, 26, 530
  • P.C. Sati,  Manoj Kumar and Sandeep Chhoker (2015) “Low temperature ferromagnetic ordering and dielectric properties of Bi1-xDyxFeO3 ceramics” Ceramics International, 41, 3227
  • PC Sati, M Kumar, S Chhoker and M Jewariya (2015)“Influence of Eu substitution on structural, magnetic, optical and dielectric properties of BiFeO 3 multiferroic ceramicsCeramics International 41, 2389,
  • Manoj Kumar, P.C. Sati Sandeep Chhoker and Vivek Sajal, (2015) “Electron spin resonance studies and improved magnetic and dielectric properties of Gd substituted BiFeO3 ceramics” Ceramics International 41, 777
  • Manoj Kumar, P.C. Sati and Sandeep Chhoker, (2014) “Electron spin resonance studies and improved magnetic properties of Gd-Ti co-substituted BiFeO3 Ceramics” Ceramics International, 25, 5366
  • Seema Joshi, Manoj Kumar, Sandeep Chhoker, Mukesh Jewariya and V. N. Singh, (2014) “Structural, magnetic, dielectric and optical properties of nickel ferrite nanoparticles synthesized by co-precipitation method” Journal of Molecular Structure, 1076, 55
  • Manisha Arora, Sunil Chauhan, P. C. Sati, Manoj Kumar, Sandeep Chhoker and R. K. Kotnala, (2014) “Spin-phonon coupling and improved multiferroic properties of Zr substituted BiFeO3 nanoparticles” Journal of Materials Science: Materials in Electronics, 25 (10), 4286
  • Manisha Arora, P. C. Sati, Sunil Chauhan, Manoj Kumar and Sandeep Chhoker, (2014) “Structural, magnetic and optical properties of Ho-Co codoped BiFeO3 nanoparticles” Materials Letters, 132,  327
  • Manisha Arora, Sunil Chauhan, P. C. Sati, Manoj Kumar and Sandeep Chhoker, (2014) “Evidence of spin-two phonon coupling and improved multiferroic behaviour of Bi1-xDyxFeO3 nanoparticles” Ceramics International, 40, 13347
  • Prakash Chandra Sati, Sunil Chauhan, Manisha Arora, Manoj Kumar and Sandeep Chhoker, (2014) “Structural, magnetic, vibrational and impedance properties of Pr and Ti codoped BiFeO3 multiferroic ceramics” Ceramics International,  40,  7805
  • Sandeep Chhoker, Manoj Kumar, A.K. Shukla, and V.D. Vankar, (2014) "Linking catalyst phase with CNT morphology and its subsequent field emission characteristics: An optimization study" Fullerene, nanotubes and carbon nanostructures, 22, 375
  • Prakash Chandra Sati, Manisha Arora, Sunil Chauhan, Manoj Kumar and Sandeep Chhoker, (2014) “Effect of Dy substitution on structural, magnetic and optical properties of BiFeO3 ceramics” Journal of Physics and Chemistry and Solids,  75, 105
  • S Chauhan, M Kumar, S Chhoker, SC Katyal, (2013) Size dependent structural, vibrational and    magnetic properties of BiFeO3 and core-shell strcutured BiFeO3 @SiO2 nanoparticles SOLID STATE PHYSICS: Proceedings of the 58th DAE Solid State Physics,
  • Prakash Chandra Sati, Manisha Arora, Sunil Chauhan, Manoj Kumar and Sandeep Chhoker,v “Rietveld analysis, magnetic, vibrational and impedance properties of (Bi1-xPrx)(Fe1-xZrx)O3ceramics” Journal of Materials Science: Materials in Electronics, 24,  5023.
  • Sunil Chauhan, Manoj Kumar, Sandeep Chhoker and S.C. Katyal, (2013)  “Structural, vibrational, optical and magnetic properties of sol-gel derived Nd doped ZnO Nanoparticles” Journal of Materials Science: Materials in Electronics,  24,  5102
  • Sunil Chauhan, Manisha Arora, Prakash Chandra Sati, Sandeep Chhoker, S.C. Katyal and Manoj Kumar, (2013)  “Structural, vibrational, optical, magnetic and dielectric properties of Bi1-xBaxFeO3 nanoparticles”, Ceramics International, 39, 6399
  • Manisha Arora, Prakash Chandra Sati, Sunil Chauhan, Hemant Singh, K.L. Yadav, Sandeep Chhoker and Manoj Kumar, (2013) “Structural, magnetic and optical properties of Bi1-xDyxFeO3 nanoparticles synthesized by sol-gel method”, Materials Letters, 96,  71
  • Manisha Arora, Prakash Chandra Sati, Sunil Chauhan, Sandeep Chhoker, A.K. Panwar and Manoj Kumar, (2013)  “Structural, optical and multiferroic properties of BiFeO3 nanoparticles synthesized by soft chemical route”, Journal of Superconductivity and Novel Magnetism, 26,  443
  • Prakash Chandra SatiManisha AroraSunil ChauhanManoj Kumar, Sandeep Chhoker (2013) “Rietveld analysis, magnetic, vibrational and impedance properties of (Bi1-xPrx)(Fe1-xZrx)O3 ceramics” Journal of Materials Science: Materials in Electronics, 24, 5023
  • Prakash Chandra Sati, Manisha Arora, Sunil Chauhan,Sandeep Chhoker and Manoj Kumar, (2012) “Structural, magnetic, and optical properties of Pr and Zr codoped BiFeO3 multiferroic ceramics”Journal of Applied Physics, 102, 094102
  • Chauhan S., Kumar M.,Chhoker S., Katyal S. C., Singh H., Jewariya M., and Yadav K. L., (2012) “Multiferroic, magnetoelectric and optical properties of Mn doped BiFeO3 nanoparticles”Solid State Communications, 152, 525
  • S. Chhoker, S. Vinayak, A.K. Shukla and V.D. Vankar, (2011 )Field emission studies of carbon nanostructures synthesized over Ni-Cr catalyst layer,Journal of Experimental Nanosciences,  6 (4), 374
  • S. Chhoker,S.K. Arora, A. K. Shukla, P.K.Srivastava and V. D. Vankar, (2008) “Electron field emission from carbon nanoflakes grown over vertically aligned carbon nanotubes grown by MPECVD”,, Jour. of Nanoscience and Nanotechnolgy, . 8(8), 4309
  • S. Arora, S. Chhoker,N. K. Sharma, V. N.  Singh and V.D. Vankar, (2008)  Synthesis of microcrystalline diamond thin film by hot filament CVD process, Journal of Applied Physics,  104, 103524
  • S. Chhoker, S.K. Srivastava and V. D. Vankar, (2008)  Field emission properties of carbon nanostructures : A Review, IEEE Explore 2.0, 820

International / National Conference

  • Chauhan S., Kumar M., Chhoker S. and Katyal S. C (2012)., “Room-temperature ferromagnetism, structural and optical properties of Nd Cheminar–2012 (CCC-2012) (An International Conference), NIT Jalandhar, September 10-12,
  • Sati P. C., Arora M., Chauhan S., Chhoker S. and Kumar M., (2012) “Phase transformation, raman, magnetic and optical properties of Pr, Ti codoped BiFeO3 multiferroic” Chemical Constellation Cheminar–2012 (CCC-2012) (An International Conference), NIT Jalandhar, September 10-12
  • Arora M., Sati P. C., Chauhan S., Chhoker S. and Kumar M., (2012) “Compositional driven phase transition and optical and multiferroic properties of Gd substituted BiFeO3 nanoparticles” Chemical Constellation Cheminar–2012 (CCC-2012) (An International Conference), NIT Jalandhar, September 10-12, 2012.
  • Sati P. C., Chauhan S., Arora M., Chhoker S., and Kumar M., (2012) “Structural, magnetic and dielectric properties of (Bi1-xPrx)(Fe1-x-Zrx)O3 (x = 0.03, 0.06 and 0.10) multiferroic ceramics” Indo-Japan Conference on Frontier nanomaterials for Energy (FNE-2012), Sharda University, Greater Noida, U.P., VT-17, pp. 96, Jan. 9-11
  • Kumar M., Chhoker S., and Sahni M., (2011) “Structural, Magnetic, Electric and Multiferroic Properties of Polycrystalline Bi1-xSrx(Fe0.8Ti0.2)O3 Ceramics” International Conference on Materials for Advanced Technologies (ICMAT-2011), National University of Singapore, Singapore, L2.4-7, pp. 43, June 26-July 1
  • Kumar M., Chauhan S., Sahni M., Chhoker S., and Dwivedi, R. K., (2011) “Structural, Magnetic, Optical and Multiferroic Properties of Mn Doped BiFeO3 Nanocrystals” International Conference on Materials for Advanced Technologies (ICMAT-2011), National University of Singapore, Singapore, A2.2-4, pp. 29, June 26-July 1.
  • Chauhan, S., Kumar, M., and Chhoker, S., (Jan-2011)  Multiferroic properties of sol-gel derived Ba doped BiFeO3 nanoparticles, National Conference and Workshop on Recent Advances in Modern Communication Systems and Nanotechnology (NCMCN – 2011), University of Rajasthan, Jaipur,
  • Chhoker, S., Kumar, M., Shukla, A. K., and Vankar, V. D., (2010) Density variation in CNT films synthesized by MPECVD  and its field emission properties, National Conference On Recent Trends in Exotic Materials (NCRTEM-2010), Sharda University, Greater Noida, U.P.
  • Chhoker S. and Vankar V.D., (2008) Effect of rubidium fluoride on the field emission properties of carbon nanotubes, Carbon, Nagano Japan,
  • S. Chhoker, H. Sharma, A.K. Shukla, V. D. Vankar, (Nov-2008) Field emission from sparsely grown carbon nanotubes APAM, National Physical Laboratory, New Delhi,
  • S. Chhoker, S. K. Arora, P.Srivastava, V.D. Vankar,  (Jan-2007) Electron field emission from carbon nanoflakes grown over vertically aligned carbon nanotubes, Advanced nano-materials, IIT Bombay,
  • S. Chhoker, S.K. Srivastava and V. D. Vankar, (Dec-2007) Field emission properties of carbon nanostructures, IWPSD, IIT Bombay.
  • S. Chhoker, S. K. Arora, S. Vinayak, P.Srivastava, A.K. Shukla, V.D. Vankar, (Nov-2006.) Enhanced field emission from carbon nanostructures grown on Ni-Cr film, International conf. on nanomaterials CMET-Pune,
  • S.K. Arora, S. Chhoker, N.K.Sharma, V.D.Vankar, (Dec-2005) Synthesis of macro crystalline diamond on macro porous silicon using hot filament CVD, IWPSD, National Physical Laboratory, New Delhi,