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Name: Dr R. K. Sahu pic
Email: rksahu@nmlindia.org
Gender: Male
Designation: Gr.IV/3 DOB: 25-04-1973
Division: MST Mobile No.: 9430776206
Phone No.: 0657-2345052 Total Years
ofExperience:
37
Address.: MST Division, NML Jamshedpur, 831007, India
Academic Qualification: Degree University/Institution Year Discipline Division

Ph.D. IIT Kanpur 2002 Physical Chemistry

M.Sc. Utkal University 1995 Chemistry(Physical) Ist

B.Sc./B.A. Utkal University 1993 Chemistry (Hons.), Ist
Experience Details: University Designation From To Type of Exp.
NMl, Jamshedpur Scientist Aug, 2004 Till Now Research: Advanced Magnetic materials, Nanomaterials
NIT, Jamshedpur Adjunct Faculty 2005 Till now Teaching: Electronic & Magnetic Materials
University of Maryland, USA April, 2006 March 2007 Research: High mobility transparent semiconductor
UGC-DAE, BARC Scientist June 2002 Aug, 2004 Research: Neutron Diffraction
IFW Dresden, Germany Visiting Scientist Dec, 2001 Feb, 2002 Research: X-ray absorption spectroscopy
IIT Kanpur Ph. D Student Aug 1997 June, 2002 Research: Magnetic & Electronic Materials
Professional Profile
Introduction:
Research Area: • Electronic, Magnetic material including nanomaterial, Graphene
Major Projects Undertaken: 1. Development of high magnetic flux polymer bonded magnetic composites employing microwave radiation, DST India , PL , 20 lakhs
2. Development of magnetic catalysis for photo catalytic reactions, DST India, Co-Pl , 20 lakhs
3. Project fund availed through CSIR Young Scientist Award, 25 lakhs
4. Hard magnetic nanoparticles with BHmax > 5MGOe (CSIR Network project)
5. Consultancy project, Sponsored by Saudi Arabia, PL, 6 lakhs
Specialization:
Patents/ Copyrights: 1. A Novel Method to Prepare Co doped -Fe2O3 using Microwave Radiation, Indian Patent # 523 / Del / 2001, S. Sundar Manoharan, Ranjan K Sahu, Manju Lata Rao, M. Qureshi, and J. Prasanna

Publications: Singhbabu, Y N and Sahu, K K and Dadhich, D and Pramanick, A K and Mishra, T and Sahu, Ranjan K (2012) Capsule-embedded reduced graphene oxide: synthesis, mechanism and electrical properties. Journal of Materials Chemistry C, 1, 958, 2013.

Ray, Ajoy K and Sahu, Ranjan K and Rajinikanth, V and Bapari, H and Ghosh, M and Paul, Parimal (2012) Preparation and characterization of graphene and Ni-decorated graphene using flower petals as the precursor material. Carbon, 50 (11). pp. 4123-4129.

Ghosh, S and Sahu, Ranjan K and Raj, C R (2012) Pt-Pd alloy nanoparticle-decorated carbon nanotubes: a durable and methanol tolerant oxygen reduction electrocatalyst. Materials and Corrosion-Werkstoffe Und Korrosion, 23(38) .

Sahu, Ranjan K and Mohanta, Ojaswini and Pramanick, A K (2012) XPS study on the correlation of magnetic properties and site occupancy of Al doped SrFe12O19. Journal of Alloys and Compounds, 532 . pp. 114-120.

Dey, Ramendra Sundar and Hajra, Saumen and Sahu, Ranjan K and Raj, C Retna and Panigrahi, M K (2012) A rapid room temperature chemical route for the synthesis of graphene: metal-mediated reduction of graphene oxide. Chemical Communications, 48 (12). pp. 1787-1789.

Sahu, Ranjan K and Ganguly, K and Mishra, T and Mishra, M and Ningthoujam, R S and Roy, S K and Pathak, L C (2012) Stabilization of intrinsic defects at high temperatures in ZnO nanoparticles by Ag modification. Journal of Colloid and Interface Science, 366 (1). pp. 8-15.

Tiwari, S K and Sahu, Ranjan K and Pramanick, A K and Singh, Raghuvir (2012) Electrochemical behavior of zirconia based coatings on mild steel prepared by sol-gel method. Corrosion Science, 63 . pp. 334-341.

Parchur, A K and Prasad, A I and Rai, S B and Tewari, R and Sahu, Ranjan K and Okram, G S and Singh, R A and Ningthoujam, R S (2012) Observation of intermediate bands in Eu3+ doped YPO4 host: Li+ ion effect and blue to pink light emitter. AIP Advances, 2 (3). 032119-1.

Sahu, Ranjan K and Pandey, S K and Pathak, L C (2011) Valence and origin of metal-insulator transition in Mn doped SrRuO3 studied by electrical transport, X-ray photoelectron spectroscopy and LSDA plus U calculation. Journal of Solid State Chemistry, 184 (3). pp. 523-530.

Tiwari, S K and Sahu, Ranjan K and Pramanick, A K and Singh, Raghuvir (2011) Development of conversion coating on mild steel prior to sol gel nanostructured Al2O3 coating for enhancement of corrosion resistance. Surface and Coatings Technology, 205 . pp. 4960-4967.

Jena, B K and Sahu, S C and Satpati, B and Sahu, Ranjan K and Behera, D and Mohanty, S (2011) A facile approach for morphosynthesis of Pd nanoelectrocatalysts. Chemical Communications, 47 (13). pp. 3796-3798.

Mishra, T and Mahato, M and Aman, Noor and Patel, J N and Sahu, Ranjan K (2011) A mesoporous WN co-doped titania nanomaterial with enhanced photocatalytic aqueous nitrate removal activity under visible light. Catalysis Science & Technology, 1 (4). pp. 609-615.

Ghosh, Sourov and Sahu, Ranjan K and Raj, C Retna (2011) Shape-regulated high yield synthesis of electrocatalytically active branched Pt nanostructures for oxygen reduction and methanol oxidation reactions. Journal of Materials Chemistry, 21 (32). pp. 11973-11980.

Aman, Noor and Mishra, T and Sahu, Ranjan K and Tiwari, J P (2010) Facile synthesis of mesoporous N doped zirconium titanium mixed oxide nanomaterial with enhanced photocatalytic activity under visible light. Journal of Materials Chemistry, 20 (48). pp. 10876-10882.

Mishra, T and Sahu, Ranjan K and Lim, S -H and Salamanca-Riba, L G and Bhattacharjee, S (2010) Hexadecylamine capped silver and gold nanoparticles: Comparative study on formation and self-organization. Materials Chemistry and Physics, 123 (2-3). pp. 540-545.
Ranjan K Sahu, Debangshu Mukherjee, J. P. Tiwari, T. Mishra, S. K. Roy and L. C. Pathak, Influence of Foreign Fe ion on Wet Chemical Synthesis of Pt Nanoparticle Thin Films at Ambient Temperature: In situ versus direct addition,J. Mater. Chem., 19, 6810, 2009.

Venkateswarlu, K and Saurabh, Suman and Rajinikanth, V and Sahu, Ranjan K and Ray, Ajoy K (2010) Synthesis of TiN Reinforced Aluminium Metal Matrix Composites Through Microwave Sintering. Journal of Materials Engineering and Performance, 19 (2). pp. 231-236.

Sahu, Ranjan K and Ray, Ajoy K and Mishra, T and Pathak, L C (2008) Microwave-Assisted Synthesis of Magnetic Ni Wire from a Metal−Organic Precursor Containing Ni(II) and Triethanolamine. Crystal Growth & Design, 8 (10). pp. 3754-3760.

Manoharan, S S and Singh, Brajendra and Sahu, Ranjan K and Zimmer, A and Lim, S -H and Salamanca-Riba, L G and Chandrasekar, V (2008) Effect of Ru-Mn redox interactions on the hole carrier density in pulsed electron deposited La1-xPbxMn0.8Ru0.2O3 (0.2 <= x <= 0.4) thin films. Journal Of Physics-Condensed Matter, 20 (23). p. 235205.

Sahu, Ranjan K and Roy, Ajoy K and Manotiaran, S S and Arora, S and Mishra, T and Lim, S -H and Salamanca-Riba, L G and Kundaliya, D C and Panda, A K and Mitra, A and Pathak, L C (2008) Single step synthesis of Ni wire, sponge and flower, and their magnetic properties. Magnetic Materials Book Series: Aip Conference Proceedings, 1003 . pp. 100-102.

Manoharan, S S and Singh, Brajendra and Sahu, Ranjan K (2007) Powder neutron diffraction evidence for enhanced inter plane magnetic coupling in La(1.2)Sr(1.8)Mn(2-x)Ru(x)O(7) layered manganites. Journal of Applied Physics, 101 (9).

Siruguri, V and Gutiérrez, J and Barandiar n, J M and L zpita, P and Singh, Brajendra and Sahu, Ranjan K and Sundar Manoharan, S and Henry, P and Mondelli, C (2006) Neutron diffraction evidence for double exchange coupling in Ru-substituted La0.6Pb0.4Mn1−xRuxO3, 0x0.5. Physica B: Condensed Matter, 385-386 (1). pp. 408-410.

Sahu, Ranjan K (2006) Effect of Mo doping on magnetic and transport properties of La0.5Sr0.5CoO3. Journal of Magnetism and Magnetic Materials, 305 (1). pp. 47-52.

Sahu, Ranjan K and Ray, Ashok K and Das, Swapan K and Kailath, A J and Pathak, L C (2006) Microwave-assisted combustion synthesis of Ni powder using urea. Journal of Materials Research, 21 (7). pp. 1664-1673.

Sahu, Ranjan K and Krishnan, P S R and Das, A and Shinde, A B and Ramanasham, M (2006) Ru-induced spin rotation in La1.2Sr1.8Mn1.9Ru0.1O7 bilayered manganite. Journal of Magnetism and Magnetic Materials, 297 (2). pp. 84-87.
Singh Brajendra, Sahu K Ranjan, Sundar Manoharan S, Dorr K, Muller K.-H, Magnetic pair making and breaking effect of Ru in La0.7Sr0.3Mn0.9Ru0.1O3 and La0.5Sr0.5Co0.9Ru0.1O3, Journal of Magnetism and Magnetic Materials 270, 358, 2004.


Sundar Manoharan S, Sahu Ranjan K, Elefant D and Schneider C. M, Magnetic disorder induced enhanced magneto-resistance in La0.5Sr0.5Co1-xRuxO3, Solid State Communications 125, 105, 2003

Sahu Ranjan K, Sundar Manoharan S, Magnetic and electronic phase diagram of a ferromagnetic La0.6Pb0.4Mn1-xRuxO3, Solid State Science 5, 549, 2003


Sahu Ranjan K, Hu Z, Rao Manju L, Sundar Manoharan S, Knupper M, Golden M, Fink J, Schneider C M, X-ray absorption spectra at the Ru and Mn L2,3 edges and long-range ferromagnetism in SrRu1-xMnxO3 solid solutions (0 x 0.5), Physical Review B: Condensed Matter and Materials Physics 66, 144415, 2002


Sundar Manoharan S, Sahu Ranjan K, Evidence for an anomalous redox ionic pair between Ru and Mn in SrRu0.5Mn0.5O3: An X-ray absorption spectroscopy approach, Chemical Communications (Cambridge, United Kingdom) 3068, 2002

Sundar Manoharan S, Sahu Ranjan K, Rao M. L, Elefant D, Schneider C. M, Direct evidence for double-exchange coupling in Ru-substituted La0.7Pb0.3Mn1-xRuxO3, 0.0  x  0.4, Euro physics Letters 59, 451, 2002


Sahu Ranjan K, Rao Manju Lata, Sundar Manoharan S, Elefant D, Verges P, Gueth A, Schneider C. M, Influence of hole carrier density and sintering temperature on the electronic properties of magnetoresistive La0.7Pb0.3Mn1-xRuxO3 (0.0  x0.4), Journal of Materials Research 17, 3090, 2002

Sahu Ranjan K, Sundar Manoharan S, Double-exchange enhanced magnetoresistance in SrRu0.5Mn0.5O3, Journal of Applied Physics 92, 4831, 2002

Sahu Ranjan K, Rao M. L, Sundar Manoharan S, Dörr K, Müller K. -H, Electronic phase transition and ferromagnetic ordering in LaMn0.95-xRuxO3 (x 0.4), Solid State Communications 123, 217 , 2002

Sahu Ranjan K, Sundar Manoharan S, A Zener pair effect in lanthanum rutheno manganite, Journal of Applied Physics 91, 7517, 2002

Sahu Ranjan K, Mohammad Qureshi, Rao Manju L, Sundar Manoharan S, Nigam A. K, Ruthenium-induced enhanced magnetization and metal-insulator transition in two-dimensional layered manganites, Applied Physics Letters 80,88, 2002

Sahu Ranjan K, Mohammad Qureshi, Rao Manju L, Sundar Manoharan S, Nigam A. K, Enhanced magnetic and metal insulator transition in Ru doped layered manganites, Journal of Applied Physics 91, 7724, 2002

Sundar Manoharan Solomon, Swati, Prasanna Sigamani John, Rao Manju Lata, Sahu Ranjan Kumar, Microwave-assisted synthesis of fine particle oxides employing wet redox mixtures, Journal of the American Ceramic Society , 85, 2469, 2002

Sundar Manoharan S, Sahu Ranjan K, Elefant D, Schneider C. M, Intergrain tunneling and magnetotransport properties in CrO2-RuO2/TiO2, Journal of Applied Physics 91, 7923-7925, 2002
Sahu Ranjan K, Manoharan S. Sundar, Magnetic pair-making double exchange coupling in Ru substituted ortho-manganites, La0.7A0.3Mn0.9Ru0.1O3, Applied Physics Letters 77, 2382, 2001






Conferences/Workshops
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Conferences/Workshops
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Books Published:
Awards: 1. CSIR Young Scientist Award, 2008 in Engineering Sciences
2. Nijhawan Award for best paper published from NML in 2006 & 2011
3. Marquis Who’s Who Award 2007, USA
4. Availed BOYSCAST Fellowship, DST, India
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