Dr. R. K. Dwivedi

Education

M. Tech. Ph.D. IIT, BHU 

Biography

Dr. R.K. Dwivedi have done M.Sc. in Physics from CSJM University, Kanpur followed by M.Tech. in Materials Technology in 1994 and Ph.D. in Materials Science and Technology from Institute of Technology, Banaras Hindu University, Varanasi in 1999. After completing Ph.D., Dr. Dwivedi worked as a post doc fellow in the Department of Metallurgical Engineering and Materials Science, IIT Bombay, Mumbai. Subsequently, he joined JIIT Noida in 2005 as a senior lecturer and now working as a professor in the Department of Physics and Materials Science & Engineering. My research area is to synthesize and characterize advanced materials having Perovskite oxide structures in the field of ferroelectrics, multiferroics, piezoelectric and dielectric capacitors which includes simulation and modelling of MEMS devices for Energy Harvesting applications. Dr. Dwivedi has completed three sponsored research projects from DST, DRDO and AICTE and one national project on MEMS from ADA as a principal/co-investigator.  I have guided several B.Tech. student’s projects and M.Tech. dissertations. Dr. Dwivedi has supervised six Ph.D. students and a few are working at present. He has published more than 100 research papers in the journals of National and International repute and International conference proceedings. Currently, Dr. Dwivedi is a life member of Materials Research Society of India (MRSI) and Institute of Smart Structures and Systems (ISSS), IISc Bangalore.

Professional Achievement

• i10-index 30, h-index 20

Details of External Projects, Patents and Awards:

• Project Cost: 7.0 Lacs
• Granting Agency: AICTE
• Status: Completed (2008-2011)

• Project Cost: 16.128 Lacs
• Granting Agency: DRDO
• Status: Completed (2010-2012)

• Project Cost: 51.30 Lacs
• Granting Agency: DST
• Status: Completed (2011-2014)

• photo-electrochemical water splitting process
• Project Cost: 1:0 Lac
• Grant Agency: INUP-i2, IIT Delhi
• Status: Ongoing (2023-24)

• S. Saxena, R. K. Dwivedi, V. Khare, “A Cavity based Multi Resonant Piezoelectric Energy Harvester with One Straight and Two L-shaped Branches”, Patent No: 521931, Award Date: 07.03.2024.
• Rajbala Nain and R.K. Dwivedi, “La and Fe doped NaNbO3 for dye degradation in contaminated water in visible light”, Patent No.: 459829, Award Date: 17.10.2023.

Journal Publications

a) International Publications

• [1] Rajbala Nain and R.K. Dwivedi, “Photocatalytic activity in graded off-valent cations substituted NaNbO₃”, Heliyon, Vol.10, e29121, Apr. 2024.
• [2] Rajat K. Mishra, Sarvesh K. Avinashi, Savita Kumari, Shweta, Rajbala Nain, R.K. Dwivedi, S. Upadhyay and C.R. Gautam, “Synergistic doping effect of La2O3 on BaO-TiO2-SiO2 glass-ceramics: Evolution of physical, structural, morphological, and dielectric behaviour for electronics applications”, J. Alloys and Compounds, Vol.990, pP-174354, Jun. 2024.
• [3]Rajbala Nain and R.K. Dwivedi, “Studies on structural, optical and electrical behaviour of La and Cr modified NaNbO3 (x ≤ 0.15)”, J. Solid State Chemistry, Vol. 329, 124378, Jan. 2024.
• [4]Puspender Chouhan and R.K. Dwivedi, “Synthesis and optical characterization of Sr and Ti doped BiFeO₃ multiferroics”, International Journal of Materials Research, Vol. 114[7-8], pp-596-600, Jun.2023.
• [5] Rajbala Nain, R.K. Dwivedi, “Effect of tuning of charge defects by K, Ba, La doping on structural and electrical behaviour of NaNbO₃”, Materials Chemistry and Physic, Vol. 306, 127999, Sept. 2023.
• [6] S. Saxena, R.K. Dwivedi and V. Khare, “Design and simulation of cavity and piezoelectric material in segmented doubly clamped piezoelectric energy harvester”, Energy Storage, Vol. 4[5], e352, May 2022.  
• [7] Vikash Singh, Pawan Kumar, Subhash, Sharma R. K. Dwivedi, “Structural and Magneto-Transport Properties of (1-x) La_0.70Sr_0.30MnO₃ – (x)ErMnO₃ (x = 0.00, 0.10, 0.20, and 0.30) Composites”,  Journal of Superconductivity and Novel Magnetism, Vol. 34,pp. 859-864 Jan. 2021.
• [8] S. Saxena, R.K. Dwivedi and V. Khare, “Effects of cavity in a multi-resonant piezoelectric energy harvester with one straight and two L-shaped branches”, Applied Physics A,  Vol. 127:798, pp.1-17, Sep. 2021.
• [9] Subhash Sharma, Pawan Kumar, Vikash Singh, R.K. Dwivedi, J.M. Siqueiros, Herrera Oscar Raymond, “Structural and electrical behavior of (0.70) BiFe1-xCoxO3-(0.30) PbTiO3 solid solutions prepared by simple sol-gel route." ECS J. Solid State Science and Technology, Vol. 10[9], 093006, Sep.2021.
• [10] Vikash Singh, Pawan Kumar, Subhash Sharma, R. K. Dwivedi, “Structural, Magneto-Transport Properties of Lead Doped NdMnO3 Ceramics”, ECS J. Solid State Science and Technology, Vol. 10[3], 033004, Mar.2021.
• [11] Vikash Singh, Pawan Kumar, R. K. Dwivedi, “ Structural and Magneto-Electrical Properties of (1-x) La_0.70Sr_0.30MnO₃ - xBaTiO3 (x = 0.10 and 0.20)”, Journal of Superconductivity and Novel Magnetism,  Vol. 34,pp. 525-530, Oct. 2021.
• [12] Subhash Sharma, R.K. Dwivedi, J.M. Siqueiros, and Herrera Oscar Raymond, “Coexistence of two ferroelectric phases and improved room-temperature multiferroics properties in the (0.70)Bi(Fe_1−xCo_x)O₃–(0.30)PbTiO₃ system”, J. Appl. Phys. Vol. 128, pp. 124102-124108, Sep. 2020.
• [13] S. Saxena, R.K. Dwivedi and V. Khare, “Multi‑piezoelectric materials based doubly clamped energy harvester, J. Mat. Sci.: Materials in Electronics, Vol. 31(5), (2020) 6998-7011, Apr. 2020.
• [14] Subhash Sharma, Vikash Singh, Anshul, J.M. Siqueiros and R.K. Dwivedi , “Structural stability, enhanced magnetic, piezoelectric, and transport properties in (1-x)BiFeO₃–(x)Ba_0.70Sr_0.30TiO₃ nanoparticles”, Journal of Applied Physics Vol. 123 [20], 204102, May 2018.
• [15] SubhashSharma, J.M.Siqueiros, GunjanSrinet, ShivKumar,  BrijmohanPrajapatiand  R.K. Dwivedi, “Structural, electrical, optical and dielectric properties of sol-gel derived (1 – x) BiFeO₃ – (x) Pb(Zr_0.52Ti_0.48)O₃ novel multiferroics materials”, Journal of Alloys and Compounds”, Vol. 732, 666-673, Jan. 2018.
• [16] Vikash Singh, Subhash Sharma and R.K. Dwivedi, “Improved dielectric, magnetic and optical properties of Pr and Ti co-substituted BFO ceramics”, J Alloy and Compound,  Vol. 747,  pp. 611-620, May 2018.
• [17] Vijayeta Pal, O.P. Thakur and R.K. Dwivedi, “Structural investigation of Ca/Zr co-substituted BaTiO₃ through XRD and Raman spectroscopy”, Journal of Alloys and Compounds, Vol.741, pp.  707-714, Apr. 2018.
• [18]Subhash, Sharma J.M.Siqueiros, GunjanSrinet, ShivKumar,  BrijmohanPrajapati, R.K. Dwivedi,  “Structural, electrical, optical and dielectric properties of sol-gel derived (1 – x) BiFeO₃ – (x) Pb(Zr_0.52Ti_0.48)O₃ novel multiferroics materials”, Journal of Alloys and Compounds, 732, pp.  666-673, Jan. 2018.
• [19] Vijayeta Pal, A. Kumar, O.P. Thakur, R.K. Dwivedi and N.E. Prasad, “Preparation, microstructure and relaxer ferroelectric characteristics of BLNT–BCT lead-free piezoceramics,  J. Alloys and Compounds, Vol. 714, pp. 725–735, Aug. 2017.
• [20] Subhash Sharma and R.K. Dwivedi, “Substitutionally driven phase transition and enhanced multiferroics and electrical properties of (1-x) BiFeO₃ – (x) Pb(Zr_0.52Ti_0.48)O₃ ceramics (0.0 ≤ x ≤ 1.00)”, J. Alloys and Compounds, Vol. 692 pp.770 – 773, Jan. 2017.
• [21] Pardeep K. Jha, Priyanka K. Jha, P. Kumar, K. Asokan and R.K. Dwivedi, “Gradient Core-shell microstructure in mixed valence multiferroics: TM (Ti, Nb, W) substituted bismuth ferrite”, J. Alloys and Compounds, Vol. 667, pp. 178-183, May 2016.
• [22] Subhash Sharma, Vikash Singh and R.K. Dwivedi, “Electrical properties of (1-x) BFO – (x) PZT multiferroics polycrystalline synthesized by sol-gel method: Transition from relaxer to non-relaxer“. J. Alloys and Compounds, Vol. 682, pp. 723–729, Oct. 2016.
• [23] Chandkiram Gautam, Abhishek Madheshiya and R.K. Dwivedi, “Synthesis and Electrical Properties of (Pb,Bi)TiO3”, Int. J. Appl. Ceram. Technol., Vol. 13[2], 340-351 Apr. 2016.
• [24] C. R. Gautam, Abhishek Madheshiya and R. K. Dwivedi, “Synthesis, Crystallization, and Dielectric Behaviour of Lead Bismuth Titanate Borosilicate Glasses with Addition of 1% La₂O₃”, Indian J. Materials Science., Article ID 498254, Jul. 2015.
• [25] R.K. Dwivedi, Pradeep, Jha, A. Priyanka Jha and Pawan Kumar”, “Structural – electrical property correlation in defect induced nanostructured off-stoichiometric bismuth ferrite: a defect analysis”Materials chemistry and Physics, Vol. 164 [8], pp. 15-22, Aug. 2015.
• [26] Pardeep K. Jha, Priyanka K. Jha, Singh Vikash Kumar, Pawan Kumar, K. Asokan and R.K. Dwivedi, “Diffuse phase ferroelectric vs Polomoska transition in (1-x)BiFeO₃-BaZr_0.025Ti_0.0975O₃ (0.10 £ x £ 0.30) solid solutions”, J. App. Phys., Vol. 117[2], pp. 024102-6, Jan. 2015.
• [27] Vijayeta Pal, O.P. Thakur and R.K. Dwivedi, “Investigation of MPB region in lead free BLNT-BCT system through XRD and Raman spectroscopy”, J. Phys. D: App. Physics, Vol. 48[1], pp. 055301-055308, Jan. 2015.
• [28] Subhash Sharma, Vikash Singh, R. K. Kotnala, Rajeev Ranjan and R. K. Dwivedi, “Co-existence of tetragonal and monoclinic phases and multiferroics properties for x ≤ 0.30 in the (1-x)Pb(Zr_0.52Ti_0.48)O₃ – (x) BiFeO₃ system“, J. Alloys and Compounds, Vol. 614[11], pp. 165-172, Nov. 2014.
• [29] Subhash Sharma, Vikash Singh, R. K. Kotnala, Rajeev Ranjan and R. K. Dwivedi, Avneesh Anshul, S.S. Amritphale and NavinChandra, “Phase transformation, improved ferroelectric and magnetic properties of (1-x) BiFeO₃ – xPb(Zr_0.52Ti_0.48)O₃ solid solutions“. J. Applied Physics, Vol. 115, 224106, Jun. 2014. 
• [30] Subhash Sharma, Vikash Singh, R. K. Kotnala, and R. K. Dwivedi, “Effect of Zr/Ti ration on structural, vibrational, magnetic and dielectric properties of (0.95)PbZr_1-xTi_xO₃ – (0.05)BiFeO₃ ceramics”, J. Mat. Sci: Mater. Electronics, Vol.  25, pp. 2697-2702, Apr. 2014. [Impact Factor: 1.966, Indexed in SCOPUS]
• [31] Priyanka K. Jha, Pardeep K. Jha, Pawan Kumar, K. Asokan and R.K. Dwivedi, “Phase transformation and two mode phonon behavior of (x) BiFeO₃- (1-x)PbZr_0.925Ti_0.075O₃ solid solutions”, J. Alloy and Compounds, Vol. 600[5], 186-192, Jul. 2014. 
• [32] Subhash Sharma, Vikash Singh, R.K. Kotnala and R.K. Dwivedi, ”Comparative studies of pure BiFeO₃ prepared by sol-gel versus conventional solid state reaction method”, J. of Materials Science: Mater. Electronics, Vol. 25[4], pp. 1915-1921, Apr. 2014. 
• [33] Vijayeta Pal, O.P. Thakur and R.K. Dwivedi, “Effect of neodymium substitution on structural and ferroelectric properties of BNT ceramics”, Materials Research Bulletin, Vol.  51[3], pp. 189-196, Mar. 2014.
• [34] Pradeep Jha, Priyanka Jha Pawan Kumar, K. Asokan and  R.K. Dwivedi, “Defect induced weak ferroelectricity and magnetism in cubic off-stoichiometric nano bismuth iron garnet: effect of milling duration”, J. Mat. Sci.: Mater. Electronics, Vol. 25[2], pp. 664-672, Nov. 2014.
• [35] Pradeep Jha, Priyanka Jha, G. Srivastava, K. Asokan and  R.K. Dwivedi, “Analytical comparison of magnetic and electrical properties using modified Landau theory in bismuth ferrite: Effect of milling;”; Journal of Magnetism and Magnetic Materials, Vol. 349[1], pp. 95–99, Jan. 2014. 
• [36] Vikash Singh, Subhash Sharma, R.K. Dwivedi, Manoj Kumar, R.K. Kotnala, “Structural transition, magnetic and optical properties of Pr and Ti co-doped BiFeO3 ceramics”Journal of Magnetism and Magnetic Materials, Vol. 349[1], 264-267, Jan. 2014. 
• [37] Vikash Sing, Subhash Sharma, Pardeep Jha, R.K. Dwivedi, Manoj Kumar and R.K. Kotnala, “Effect of Y³⁺ substitution on structural, electrical and optical properties of BiFeO3 ceramics”, Ceramics International, Vol. 40[1], pp. 1971-1977, Jan. 2014.
• [38] Vijayeta Pal,R. K. Dwivedi and O. P. Thakur, “Synthesis and Ferroelectric Behavior of Gd doped BNT Ceramics”, Current Applied Physics,Vol. 14[1], pp. 99 – 107, Jan. 2014.
• [39] Vijayeta Pal,R. K. Dwivedi and O. P. Thakur, “Dielectric and Ferroelectric properties of lead free [1-z{(Bi_1-xLa_x)_0.50(Na_1-yLi_y)_0.50TiO₃}-zBaTiO₃], Advances in Materials Science and Engineering, Volume 2013, Article ID-125634, Aug. 2013.
• [40] Vikash Sing, Subhash Sharma, R.K. Dwivedi, Manoj Kumar and R.K. Kotnala, “Multiferroic and optical properties of Pr substituted bismuth ferrite ceramics”, Phys. Status Solidi A, Vol. 210[7], pp. 1442-1447, Jul. 2013.                                             
• [41]Arvind Kumar,R.K. Dwivedi, S. Baboo, Om Parkash, “Low Temperature Dielectric Relaxation in  B_a1-xB_ixT_i1-xF_exO3 System”,J. of Materials, Vol. 2013, Article ID – 857201, Feb.2013.        
• [42] Vijayeta Pal, R. K. Dwivedi and O. P. Thakur, “Effect of Processing on Synthesis and Dielectric Behavior of Bismuth Sodium Titanate Ceramics”, J. of Ceramics, Vol. 2013, Article ID – 261914, 2013.                                             
• [43]Subhas Sharma, Vikash Singh, Om Parkash and R.K. Dwivedi, “Ëffect of processing on dielectric properties of (0.95)PbZr_0.52Ti_0.48O₃-(0.05)BiFeO₃”, Applied Physics A, 112[4], pp. 975-984, 2013.                               
• [44]Priyanka A. Jha, Pardeep K. Jha, A.K. Jha and R.K. Dwivedi, “Dielectrical behavior of (1-x) [Ba Zr_0.025Ti_0.975O₃] – (x) [BiFeO₃] (x = 0.1-0.4) solidsolutions”, Materials Research bulletin, Vol. 48[1], pp. 101-105, Jan. 2013.                                                                   
• [45]Vikash Kumar, Subhash Sharma, R.K. Dwivedi, Manoj Kumar, R.K. Kotnala, N.C. Mehra and R.P. Tandon, “Structural, Dielectric, ferroelectric and magnetic properties of Bi_0.80A_0.20Fe_xO₃ (A = Pr & Y) multiferroics” J. Supercond. Novel magnetism, Vol. 26[3], pp. 657-661, 2013.                                                                                                                                 
• [46]Vijayaeta Pal and R.K. Dwivedi, “Effect of rare earth Gd substitution on the structural, microstructural and dielectric properties of lead free BNT Ceramics”, Advanced Material Research, Vol. 585, pp 200-204, 2012.                                                                                 
• [47]Arvind Kumar, R.K. Dwivedi and Vijayeta Pal, “Dielectric behavior and Impedance spectroscopy of Ba_1-xBi_xTi_1-xFe_xO₃ system”, Advanced Material Research, Vol. 585, pp 190-194 Dec. 2012.                                                                                                                       
• [48]Pawan Kumar, R. Prasad, A. K. Srivastava, N. Vijayan, R. K. Dwivedi, H. K. Singh,“Microstructural and magneto-transport properties of La_1-xCa_xMnO₃ (0.45 ≤ x ≤ 0.60) thin films”, J. Alloys and Compounds, Vol. 531, pp. 23-29, Aug. 2012.    
• [49]P. Kumar,R.K. Dwivedi, R. Prasad, P.K. Siwach and H.K. Singh, “Magneto-transport properties of La_0.80Sr_0.20Mn_1-xCu_xO₃ thin films fabricated by Spray Pyrolysis”, J. Korean Physical Society, Vol. 58 [1], pp. 58-63, Jan.2011.                                            
• [50]P. Kumar, R. Prasad,R.K. Dwivedi and H.K. Singh, “Out of plane low field anisotropic Magneto resistance in N_d0.51S_r0.49Mn_O3 thin films”,Journal of Magnetism and Magnetic Materials, Vol. 323, pp. 2564-2568, Nov. 2011.                                       
• [51]P. Kumar, R.K. Prasad, A.K. Srivastava, H.K. Singh and R.K. Dwivedi, “Anomalous weak ferromagnetism in electron doped Nd_1-x Sr_xMnO₃ (0.50≤x≤062)thin films”, J. Korean Physical Society, Vol. 59 [4], pp-2792-2796, Oct. 2011.          
• [52]R.K. Dwivedi, P. Kumar and S.K.Mishra, “Nano synthesis of lead doped neodymium manganite powder and characterization”, Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry, Vol. 37, pp. 443-446, Aug. 2007.              
• [53]R. K. Dwivedi, Devendra Kumar and Om Parkash, “Ferroelectric transitions in valance compensated Ba_1-xLa_xTi_1-xCr_xO₃ ceramics”, J. Mat. Sci. Vol. 42 [1] pp. 72-79, Nov. 2007.   
• [54] Om Parkash,Devendra Kumar,R.K. Dwivedi, P. Singh, K.K. Srivastav and Sindhu Singh, “Effect of simultaneous substitution of La and Mn on dielectric behaviour of BaTiO₃”, J. Mat. Sci. Vol. 42 [14], pp. 5490-5496, Apr. 2007.                                         
• [55]R.K. Dwivedi, Raghvendra Raj, A.K. Nigam and D. Bahadur, “Low temperature synthesisand magneto-electrical studies in Nd_1-xPb_xMnO₃ system”, J. Mat. Sci., Vol. 40, pp. 4801-05, Jul. 2005.                                                                                                         
• [56]C.M. Srivastava,R.K. Dwivedi, A.K. Nigam and D. Bahadur, “Effect of Cr substitution on transport and magnetic ordering in Nd_0.50Sr_0.50MnO₃”, J. Magnetism and Magnetic Materials, Vol. 284, pp. 239-252,2004).                                                                             
• [57]R.K. Dwivedi, Devendra Kumar and Om Parkash, “Grain and grain-boundary relaxation in Sr_1-xLa_xTi_1-xCr_xO₃ ceramics: Impedance and modulus spectroscopy”, British Ceramic Transactions, Vol. 102, pp. 1-8, Feb. 2003.                                                                    
• [58]Om Parkash,Devendra Kumar, K.K. Srivastav and R.K. Dwivedi, “Electrical conduction behaviour of cobalt doped BaSnO₃”, J. Mat. Sci.,  Vol. 36 [24], pp. 5805-5810, Dec. 2001.
• [59]R.K. Dwivedi, Devendra Kumar and Om Parkash, “Structure and dielectric Behaviour of valence compensated oxide, Sr_1-xLa_xTi_1-xCr_xO₃ ceramics”, British Ceram Transaction, Vol. 100, pp. 115-119, Mar. 2001.                                                                               
• [60]C.R. Gautam, R.K. Dwivedi, Devendra Kumar and Om Parkash, “Synthesis and electrical conduction behaviour of strontium yttrium titanate cobalt oxide (Sr_1-xY_xTi_1-xCo_xO₃, 0.01 £ x £ 0.10)”, Materials Letters, Vol. 50, pp. 254-258, Sep. 2001.                                   
• [61]R.K. Dwivedi, Devendra Kumar and Om Parkash, “Valence compensated perovskite oxide system Ca_1-xLa_xTi_1-xCr_xO –I: Structure and dielectric behaviour”, J. Mat. Sci., Vol. 36 [15], pp. 3641-48, Jan. 2001.
• [62]R.K. Dwivedi, Devendra Kumar and Om Parkash, “Valence compensated perovskite oxide system Ca_1-xLa_xTi_1-xCr_xO₃-II: Electrical transport behaviour”, J. Mat. Sci., Vol. 36 [15], pp. 3649-55, Jan.  2001.  
• [63]R.K. Dwivedi, Devendra Kumar and Om Parkash, “Valence compensated perovskite oxide system Ca_1-xLa_xTi_1-xCr_xO₃-III: Impedance spectroscopy”, J. Mat. Sci., Vol. 36 [15], pp. 3657-65, Jan. 2001.                                                                                                           
• [64]R.K. Dwivedi, Devendra Kumar and Om Parkash, Pandey L. and Srivastav K.K., “Effect of processing route on dielectric behavior of valence compensated Sr_0.50Ca_0.15La_0.35Ti_0.65Co_0.35O₃ ceramics”, Ceramic International, 26, 13 (2000). [IF: 1.76, Indexed in SCOPUS]                                     
• [65]R.K. Dwivedi, Devendra Kumar and Om Parkash, “Dielectric relaxation in valence compensated solid solution Sr_0.65La_0.35Ti_0.65Co_0.35O₃”, J. Phys. D: App. Phys., Vol. 33, p. 88, Jan. 2000. 
• [66]R.K. Dwivedi, C.C. Christopher,Om Parkash, Devendra Kumar and L. Pandey, “Effect of processing route and parameters on dielectric properties of valence compensated Sr_0.65La_0.35Ti_0.65Co_0.35O₃”, J. Mat. Sci. Lett., Vol. 15, p. 1867, Jan. 1996.                                                                                             

b) National Publications

• [67]Rajesh Katare, L. Pandey,R.K. Dwivedi, Devendra Kumar and Om Parkash, “A novel approach based on impedance spectroscopy for measurement of magnetic permeability of ceramics”, Indian J. of Engineering and Materials Science, Vol. 6, p. 34, Feb. 1999.
• [68] Vijayeta Pal, R.K. Dwivedi and O.P. Thakur, “Effect of co-substitution of La/Li on structure, microstructure, dielectric and piezoelectric behaviour of BiNaTiO3 ceramics”, Indian J. of Physics, Vol. 89[2], pp. 123-130, Jan. 2015.  

International Conference Proceedings: