Dr. Vivek Verma
Ph.D.,“Studies of Magnetic and Electrical Properties of doped and substituted Lithium Ferrites”,2010,National Physical Laboratory , New Delhi & University of Delhi, India
M.Sc.,Physics,2004,University of Lucknow
B.Sc.,Physics, Mathematics, Astronomy,2002,University of Lucknow
Organization / Institution
1. National Physical Laboratory, New Delhi
2. National Physical Laboratory, New Delhi
3. Hindu College, University of Delhi, India
4. Hindu College, University of Delhi, India
Assistant Professor (Ad-hoc)
eaching Experience(Subjects/Cources Taught):-
23 Aug. 2005-06 Jan 2006 SRPG College, Nadbai, Bharatpur, Rajasthan. Undergraduate Classes.
17 Aug. 2009- cont..: Assistant Professor- Hindu College, University of Delhi, Undergraduate Classes
Honours And Awards:-
In Indexed/Peer Reviewed Journals:-
(1). Vivek Verma, Vibhav Pandey, Sukhveer Singh, R.P. Aloysius, S. Annapoorni, R.K. Kotanala, “Comparative study of structural and magnetic properties of nano-crystalline Li0.5Fe2.5O4 prepared by various methods” Physica B: Condensed Matter, Volume 404, Issue 16, 2309-2314 (2009).
(2). Vivek Verma, S.P. Gairola, Mohan C. Mathpal, S. Annapoorni, R.K. Kotnala, “Magnetic and electrical properties of manganese and cadmium co-substituted lithium ferrites” Journal of Alloys and Compounds, Volume 481, Issues 1-2, 29 872-876 (2009).
(3). Vibhav Pandey, Vivek Verma, R.P. Aloysius, G.L. Bhalla, V.P.S. Awana, H. Kishan, R.K. Kotnala, “Magnetic and magneto-transport properties of double perovskite Ba2−xSrxFeMoO6 system” Journal of Magnetism and Magnetic Materials”, Volume 321, Issue 14, Pages 2239-2244(2009).
(4). Vibhav Pandey, Vivek Verma, R.P. Aloysius, G.L. Bhalla, R.K. Kotnala, “Magnetic and magneto-transport properties of (Ba0.8Sr0.2)2-xNdxFeMoO6” Solid State Communications, Volume 149, Issues 21-22, Pages 869-873(2009).
(5). Vivek Verma, R.K. Kotnala, Vibhav Pandey, P.C. Kothari, L. Radhapiyari, B.S. Matheru, “The effect on dielectric losses in lithium ferrite by cerium substitution” Journal of Alloys and Compounds, Volume 466, Issues 1-2, Pages 404-407 (2008).
(6). VivekVerma, S.P. Gairola, Vibhav Pandey, R.K. Kotanala, Hua Su, “Permeability of Nb and Ta doped lithium ferrite in high frequency range” Solid State Communications, Volume 148, Issues 3-4, Pages 117-121 (2008).
(7). R.K. Kotnala, Vivek Verma, Vibhav Pandey, V.P.S. Awana, R.P. Aloysius, P.C. Kothari, “The effect of nano- SiO2 on the magnetic and dielectric properties of lithium cadmium ferrite” Solid State Communications, Volume 143, Issues 11-12, Pages 527-531(2007).
(8). Vivek Verma, Vibhav Pandey, R.K. Kotnala, Hari Kishan, Nitender Kumar, P.C. Kothari, “Influence of silicon substitution on the properties of lithium ferrite” Journal of Alloys and Compounds, Volume 443, Issues 1-2, Pages 178-181(2007).
(9). Vibhav Pandey, R P Aloysius, Vivek Verma, H Kishan, P C Kothari, R K Kotnala, “Structural and Magnetic properties of Sr2-xMgxFeMoO6: A double Perovskite CMR system” Sensors letters, Volume 7, 1-8 (2009).
(10). Vivek Verma, Vibhav Pandey, V.N. Shukla, S. Annapoorni and R.K. Kotnala, “Remarkable influence on the dielectric and magnetic properties of lithium ferrite by Ti and Zn substitution” Solid State Communications, Volume 149, Issues 39-40, Pages 1726-1730 , October (2009).
(11). Vivek Verma, S. P. Gairola, Vibhav Pandey, J.S. Tawale and R.K. Kotanala, “High permeability and low power loss of Ti & Zn substitution lithium ferrite in high frequency range” Journal of Magnetism and Magnetic Materials, Volume 321, Issue 22, Pages 3808-3812, November (2009).
(12). S.P. Gairola, Vivek Verma, L.P. Purohit and R.K. Kotanala, “Complex permittivity, complex permeability and microwave absorption properties of BaCoxMnxTi2xFe12-4xO4 ferrites in X-band frequencies” Solid State communications, Volume 150, Issues 3-4, Pages 147-151, January (2010).
(13). Kuldeep Chand Verma, R.K. Kotnala, Vivek Verma, N.S. Negi, “Nanograins dependent dielectric constant, tunability, phase transition, impedance spectroscopy and leakage current of (Pb1 − xSrx)TiO3 thin films Thin Solid Films, 518 (2010) 3320–3325
(14). M. Abdullah Dar, Khalid Mujasam Batoo, Vivek Verma, W. A. Siddiqui and R.K. Kotnala, “High dielectric constant valued nano ferrite crystals prepared by citrate-gel method” J. Alloys and Compounds, 493 (2010) 553–560.
(15). Viswan L. Reena, Chorappan Pavithran, Vivek Verma and Janardhanan D. Sudha, “Nanostructured Multifunctional Electromagnetic Materials from the Guest-Host Inorganic-Organic Hybrid Ternary System of a Polyaniline-Clay-Polyhydroxy Iron Composite: Preparation and Properties” J. Phys. Chem. B 2010, 114, 2578–2585.
(16). Vivek Verma, Vibhav Pandey, Anterpreet Singh, S. Annapoorni and R.K. Kotanala, Magnetic properties of nanocrystalline Li0.35Cd0.3Fe2.35O4 ferrite prepared by modified citrate precursor method, Materials Chemistry and physics,122 (2010) 133–137.
(17). R.K. Kotnala, M. Abdullah Dar,Vivek Verma, A.P. Singh, W.A. Siddiqui, “Minimizing of power loss in Li-Cd ferrite by Nickel substitution for power applications” Journal of Magnetism and Magnetic Materials , 322 (2010) 3714–3719.
(18). S.P. Gairola, Vivek Verma, Lalit Kumar, M. Abdullah Dar, S. Anaapoorni, R. K. Kotnala, “Enhanced microwave absorption properties in Polyaniline and nano-ferrite composite in X-band” Synthetic Metals” 160, Issues 21-22 (2010) 2315-2318.
(19). Vibhav Pandey, Vivek Verma, G. L. Bhalla, and R. K. Kotnala, “Increased low field magnetoresistance in electron doped system Sr0.4Ba1.6−xLaxFeMoO6” JOURNAL OF APPLIED PHYSICS 108, 053912 (2010).
(20). M. Abdullah Dar, Vivek Verma, Vibhav Pandey, Ravi Sonkar, W. A. Siddiqui, and R. K. Kotnala, “Magnetic and Electrical Properties of Ti Substituted Lithium Zinc Ferrites” Integrated Ferroelectrics, 117:1–8, (2010).
(21). S. P. Gairola, Vivek Verma, Vibhav Pandey, Ravi, L. P. Purohit, and R. K. Kotnala, “Modified Composition of Cobalt Ferrite as Microwave Absorber in X-Band Frequencies” Integrated Ferroelectrics, 117:1–6, 2010
(22). J. Mohapatra, D. K. Mishra, S. K. Kamilla, V. R. R. Medicherla, D. M. Phase, V. Verma, and S. K. Singh,” Ni-doped ZnO: Studies on structural and magnetic properties” Phys. Status Solidi B, 1–8 (2011) / DOI 10.1002/pssb.201046513.
(23). R.K. Kotnala, Vibhav Pandey, Manisha Arora, V. Verma, R.P. Aloysius, Amita Malik, G.L. Bhalla, “Identifying the contribution of band filling effects in the double perovskite system Sr0.4Ba1.6FeMoO6” Solid State Communications, 151, Issue 5, (2011) 415-419.
(24). M. Abdullah Dar, Vivek Verma, S.P. Gairola, W.A. Siddiqui, Rakesh Kumar Singh, R.K. Kotnala, “Low dielectric loss of Mg doped Ni–Cu–Zn nano-ferrites for power applications”Applied Surface Science, Volume 258, Issue 14, 2012, 5342-5347.
(25). Vivek Verma, Shahab Ahmad, Abdullah Dar, R. Kotnala, “An Inexpensive Route to Synthesize High-Purity CrO2 for EMI Shielding in X-Band Frequencies” International Scholarly Research Network ISRN Materials Science 03/2012; 2012(Article ID 948219,).
(26). M. Abdullah Dar, R.K. Kotnala, Vivek Verma, Jyoti Shah, Weqar Ahmad Siddiqui, Masood Alam, “High Magneto-Crystalline Anisotropic Core-Shell Structured Mn0.5Zn0.5Fe2O4/PANI Nano-Composites Prepared by in-situ Emulsion Polymerization” Journal of physical chemistry C 2012, vol. 116, pp. 5277-5287.
(27). Priyanka, Simran, Adarsh Singh, Vivek Verma, ferrofluid: Preparation, Characterization and its Application for Energy Production, International Journal of Engineering Research & Technology (IJERT) Vol. 2 Issue 4, April – 2013 ISSN:2278-0181.
(28). Vivek Verma, Prachi Sharma, Adarsh Singh, Effect of iron content on permeability and power loss characteristics of Li0⋅35Cd0⋅3Fe2⋅35O4 and Li0⋅35Zn0⋅3Fe2⋅35O4, Bull. Mater. Sci., Vol. 37, No. 3, May 2014, pp. 1–5. © Indian Academy of Sciences.
(29). Aparna Saxena, Prachi Sharma, Anjali Saxena, Vivek Verma, Raghvendra Sahai Saxena, Effect of La doping on dielectric properties of BiFe0.95Mn0.05O3 multiferroics, Ceramics International 40(2014)15065–15072.
(30). Prachi Sharma,Vivek Verma, Structural, magnetic and electrical properties of La and Mn co-substituted BFO samples prepared by the sol–gel technique, Journal of Magnetism and Magnetic Materials 374(2015)18–21.
(31). Vivek Verma, Jyoti Kapil, Neelam Singh, Structural, Magnetic Properties of Soft and Hard Ferrites and their EMI Shielding Application in X-Band Frequency Range, International Journal of Engineering Research & Technology (IJERT), Vol. 3 Issue12, December-2014.
(b) In national/international conference proceeding
(32). Vivek Verma, Vibhav Pandey, R.K.Kotnala, “Magnetic and electrical properties of cadmium substituted lithium ferrites” MAGNETIC MATERIALS: International Conference on Magnetic Materials (ICMM-2007). AIP Conference Proceedings, Volume 1003, pp. 133-135 (2008).
(33). Vivek Verma, R. K. Kotnala, “Synthesis and Characterization of Nano-ferrites” MSI Bulletin, Vol. 31, (2007-2008).
(34). ShivPrasad, VivekVerma, VibhavPandey, Jyoti Shah, M.C.Mathpal, L.P.Purohit, R. K. Kotnala, “Magnetic and Dielectric properties of nano-SiO2 & nano-TiO2 doped Lithium ferrite” , MMA-21 conference (2008).
(35). Jyoti Shah, Vivek Verma, Mohan Chand, Vibhav Pandey and R. K. Kotnala, “Humidity Sensitive Ceramic Material-Magnesium Ferrite” MSI Bulletin, Vol. 31, (2007-2008).
(36). R. P. Aloysius, Vivek Verma, Vibhav Pandey, P. Srinivasan, R. K. Kotnala, 2010 Conference on Precision Electromagnetic Measurements, June 13-18, 2010, Daejeon Convention Center, Daejeon, Korea.
Area of Interest.
The thesis work was on the development of the high quality, cost effective and low loss ferrites for microwave and power applications. EMI shielding applications of soft and hard ferrites and their composites with conducting polymers.
Area of reasearch- Magnetic nano-materials, Spintronics materials and multiferroic systems.