Dr. Lawrence Kumar

Assistant Professor (Senior Scale),
Department of Metallurgical & Materials Engineering,
Central University of Jharkhand, Ranchi

Contact : 6205371758/9771630347
E-Mail : lawrence.kumar@cuj.ac.in/lawrencecuj@gmail.com

1. M.Sc (Physics): Patna University
2. M.Tech (Materials Science &Technology): IIT-BHU
3. PhD: IIT Patna

1. Qualified National Eligibility Test (CSIR-NET: Subject-Physical Science) for Lectureship eligibility conducted by Joint CSIR-UGC (December 2006).
2. Qualified Graduate Aptitude Test in Engineering (GATE-Physics) in 2007 and secured All India Rank-128 organized by MHRD Govt. of India.
3. Qualified Joint Entrance Screening Test (JEST-Physics) 2007: All India Rank-295.
4. Received MHRD fellowship during M.Tech.
5. Received best poster award: Research Scholar day, IIT Patna 2011.
6. Outstanding Reviewer recognized by editor of Journal of Magnetism and Magnetic Materials (Elsevier) - March, 2018.
7. Recognized Reviewer by editor of Journal of Magnetism and Magnetic Materials (Elsevier)-January, 2018.
8. Recognized Reviewer by editor of Journal of American Ceramic Society (Wiley) - 2018.
9. Recognized Reviewer by editor of Journal Thin Solid Films (Elsevier) - 2021.
10. Recognized Reviewer by editor of Journal Materials Chemistry and Physics (Elsevier)-2021.
11. Recognized Reviewer by editor of Journal Solid State Communications (Elsevier)-2020.
12. Recognized Reviewer by editor of Journal of Physics and Chemistry of Solids (Elsevier)-2020.
13. Recognized Reviewer by editor Materials Today Proceedings (Elsevier)-2020.

1. Nanomagnetic ceramics.
2. Nanocomposite material.
3. Structure-property correlation.
4. Dielectric ceramics.
5. Powder X-ray crystallography.
6. Nanomaterials synthesis and characterization.
7. Nanostructured materials for electronic, energy and environmental application.
8. Solar Photovoltaic System

1. Quantum Mechanics
2. Characterization Technique for Nanomaterials
3. Nanomagnetism
4. Crystallography and Crystal Structure
5. Physical Behaviour of materials
6. Nanophotonics
7. Introduction to Ceramic Engineering
8. Thermodynamics and Statistical Mechanics
9. Modern Microscopy Techniques
10. Diffraction technique for nanomaterials

Implementation Strategies for New Education Policy 2020 : Committee member for Student support Working group
Duration: since 19th August 2021

1. Member Departmental Academic Purchase Committee.
2. Member Board of Studies, Department of Nanoscience and Technology, Central University of Jharkhand.
3. Department Research Committee (DRC)/ Research Advisory Committee (RAC) member.
4. Department Laboratory In-charge.

Research publications

Articles in Journals

1. S. Kumari, M.K. Manglam, A. Shukla, Lawrence Kumar, P. Seal, J.P. Borah, M. Kar, 2021.Optimization of magnetic properties and hyperthermia study on soft magnetic nickel ferrite fiber. Physica B: Physics of Condensed Matter. 621:413280.
2. S. Kumari, M. K. Manglam, L. Pradhan, Lawrence Kumar, J. P. Borah, M. Kar, 2021. Modification in crystal structure of copper ferrite fiber by annealing and its hyperthermia application. Applied Physics A. 127: 273.
3. D. Kumar, D. K. Dheer, Lawrence Kumar, 2021. Effect of different operating condictions on the conversion efficiency of triple-junction solar cell. Materials Research Express. 8:035902.
4. S. K. Paswan, S. Kumari, M. Kar, A. Singh, H. Pathak, J. P. Borah, Lawrence Kumar, 2021. Optimization of structure-property relationships in nickel ferrite nanoparticles annealed at different temperature. Journal of Physics and Chemistry of Solids. 151:109928.
5. D. Kumar, P. Mishra, A. Ranjan, D. K. Dheer, Lawrence Kumar, 2020. A simplified simulation model of silicon photovoltaic modules for performance evaluation at different operating conditions. Optik. 204:164228.
6. S. Kumari, L. Pradhan, Lawrence Kumar, M. K. Manglam, M. Kar, 2019. Effect of annealing temperature on morphology and magnetic properties of cobalt ferrites nanofibers. Materials Research Express. 6: 1250a3.
7. S. Supriya, Lawrence Kumar, M. Kar, 2019. Optimization of Dielectric Properties of PVDF–CFO Nanocomposites, Polymer Composite. 40 (3):1239-1250.
8. Lawrence Kumar, P. Kumar, V. Kuncser , S. Greculeasa, B. Sahoo,  M. Kar, 2018. Strain induced magnetism and superexchange interaction in Cr substituted nanocrystalline cobalt ferrite. Materials Chemistry and Physics. 211:54-64.
9. Lawrence Kumar, P. Kumar, M. K. Zope, M. Kar. 2017. High-Temperature Magnetic Behaviour of 10% Aluminium-Substituted Cobalt Ferrite. Journal of Superconductivity and Novel Magnetism. 30:1629–1634.
10. S.Kumari, V. Kumar, P. Kumar, M. Kar, Lawrence Kumar, 2015. Structural and magnetic properties of nanocrystalline yttrium substituted cobalt ferrite synthesized by the citrate precursor technique. Advanced Powder Technology. 26: 213–223.
11. V. Kumar, S. Kumari,  P. Kumar, M. Kar, Lawrence Kumar, 2015. Structural analysis by Rietveld Method and its correlation with optical properties of nanocrystalline zinc oxide. Advanced Materials Letters, 6:139-147.
12. Lawrence Kumar, P. Kumar, M. Kar. 2014. Non-linear behavior of coercivity to the maximum applied magnetic field in La substituted nanocrystalline cobalt ferrite. Physica B: Physics of Condensed Matter. 448:38–42.
13. Lawrence Kumar, P. Kumar, S. K. Srivastava, M. Kar, 2014. Low Temperature and High Magnetic Field Dependence and Magnetic Properties of Nanocrystalline Cobalt Ferrite. Journal of Superconductivity and Novel Magnetism. 27:1677–1681.
14. Lawrence Kumar, M. Kar. 2014. Effect of Ho3+ substitution on the cation distribution, crystal structure and magnetocrystalline anisotropy of nanocrystalline cobalt ferrite. Journal of Experimental Nanoscience. 9:362-374.
15. Lawrence Kumar, P. Kumar, M. Kar. 2013. Influence of Mn substitution on crystal structure and magnetocrystalline anisotropy of nanocrystalline               Co1-xMnxFe2-2xMn2xO4. Applied Nanoscience 3:75-82.
16. Lawrence Kumar, P. Kumar, M. Kar. 2013. Cation distribution by Rietveld technique and magnetocrystalline anisotropy of Zn substituted nanocrystalline cobalt ferrite. Journal of Alloys and Compound. 551:72-81.
17. Lawrence Kumar, P. Kumar, M. Kar. 2013. Effect of non- magnetic substitution on the structural and magnetic properties of spinel cobalt ferrite ceramics. Journal of Materials Science: Materials in Electronics. 24:2706-2715.
18. Lawrence Kumar, P. Kumar, A. Narayan, M. Kar. 2013. Rietveld analysis of XRD patterns of different size of nanocrystalline cobalt ferrite. International Nanoletters, 3(8):1-12.
19. Lawrence Kumar, M. Kar. 2012. Effect of La3+ substitution on the structural and magnetocrystalline anisotropy of nanocrystalline cobalt ferrite               (CoFe2-xLaxO4). Ceramics International. 38: 4771-4782.
20. Lawrence Kumar, M. Kar. 2011. Influence of Al3+ ion Concentration on the Crystal Structure and Magnetic Anisotropy of Nanocrystalline Spinel Cobalt Ferrite. Journal of Magnetism and Magnetic Material. 323:2042-2048.
21. Lawrence Kumar, M. Kar. 2011. Effect of Annealing Temperature and Preparation Condition on Magnetic Anisotropy in Nanocrystalline cobalt Ferrite. IEEE Trans. Magn. 47:3645-3648.
22. Lawrence Kumar, P. Mohanty, T. Shripathi, C. Rath. 2009. Appearance of superparamagnetic phase below curie temperature in cobalt chromite. Nanoscience and Nanotechnology Letters. 1:199-203.

Book Chapters (Published)

1. S. K. Paswan, P. Kumar, R. K. Singh, S. K. Shukla, Lawrence Kumar, 2021. Spinel ferrite Magnetic nanoparticles: An alternative for wastewater treatment. Book: Pollutants and Water management: Resource, strategies and scarcity, John Wiley & Sons, pp. 273-305. ISBN: 978-1-119-69361-1.
2. Lawrence Kumar, S. K. Paswan, P. Kumar, R. K. Singh, R. Kumar, S. K. Shukla, 2021. Nanotechnology–based filtration membranes for removal of pollutants from drinking water. Book: Sustainable Environmental Clean-up: Green Remediation, Elsevier, pp. 231-246. ISBN: 978-0-12-823828-8.
3. S. K. Paswan, R. Kumar, P. Kumar, R. K. Singh, A. Kumar, S. K. Shukla, Lawrence Kumar, 2021. Magnetically separable graphene oxide-based spinel ferrite nanocomposite for water remediation. Book: Contamination of Water: Health Risk Assessment and Treatment Strategies. Elsevier Academic Press, pp.-559-569. ISBN: 978-0-12-824058-8.

Papers in Refereed Conference

1. Theoretical estimation of limiting efficiency and band gap optimization for multijunction solar cell. Durgesh Kumar and Lawrence Kumar, International conference on smart grid and green energy systems, Vellore, India, July 30-31, 2021 (SGGES-2021).
2. Heating efficiency of Al3+ substituted nickel ferrite nanoparticles for hyperthermia application. Sanjeet Kumar Paswan and Lawrence Kumar, International conference on Advanced Materials for Better Tomorrow,  IIT BHU-Varanasi, India, July 13-17, 2021(AMBT-2021).
3. Temperature dependent magnetic properties of samarium substituted Nanocrystalline nickel ferrite for bio-medical applications. Sanjeet Kumar Paswan and Lawrence Kumar, International conference on Smart Materials for Sustainable Technology Goa, India, February 22-25, 2020 (ICSMST-2020)
4. Size induced Rietveld structure refinement of nickel ferrite nanoparticles and its correlation with optical properties. Sanjeet Kumar Paswan and Lawrence Kumar, International Conference on Electron Microscopy and Allied Analytic Techniques, Himachal Pradesh University, Shimla, India, June 7-9, 2019 (ICEMAAT-2019)
5. Frequency dependent dielectric properties of nanocrystalline nickel ferrite. Sanjeet  Kumar Paswan and Lawrence Kumar, International Conference on Green and Efficient Energy Technology and Materials, Central University of Jharkhand, Ranchi, India March 6-8, 2019
6. Modeling and Parameter extraction of Photovoltaic module using MATLAB/Simulink under different environmental condition. Durgesh Kumar, Pritish Mishra, Ashutosh Ranjan and Lawrence Kumar, International conference on Efficient Solar power generation and energy harvesting, Amity University, Noida, India, February 12-14, 2019.
7. Hardware Design of low cost autonomous data logger for PV system monitoring using Arduino MATLAB interfacing. Durgesh Kumar and Lawrence Kumar, International Conference on Green and Efficient Energy Technology and Materials, Central University of Jharkhand, Ranchi, India, March 6-8, 2019
8. Investigation of structural, dielectric and electrochemical properties of spinel structured lithium manganese oxide. Abhishek Mudi, Benjamin Raj, Sanjeet Kumar Paswan and Lawrence Kumar, International Conference on Green and Efficient Energy Technology and Materials, Central University of Jharkhand, Ranchi, India, March 6-8, 2019
9. Structural dielectric and electrochemical properties of perovskite structured lanthanum manganese oxide. Ashwani Kumar Choudhary, Benjamin Raj, Sanjeet Kumar Paswan and Lawrence Kumar, International Conference on Green and Efficient Energy Technology and Materials, Central University of Jharkhand, Ranchi, India, March 6-8, 2019
10. I-V characterization of polycrystalline PV module based on MATLAB Arduino interfacing. Durgesh Kumar and Lawrence Kumar, International Conference on Nanoscience and Engineering Application, Hyderabad, India October 4-6, 2018.
11. High temperature magnetic properties of cobalt ferrite nanoparticles using arrott plot technique. Lawrence Kumar, Pawan Kumar and Manoranjan Kar, International Conference on Magnetic Materials and Applications, Vellore Institute of Technology University Vellore, India (VIT Vellore). December 02-04, 2015 (ICMAGMA-2015).
12. Structural and Magnetic properties of rare earth substituted nanocrystalline cobalt ferrite. Lawrence Kumar, Swati Kumari, Vikash Kumar, Pawan Kumar and Manoranjan Kar, International Conference on Electron Microscopy &XXXV Annual Meeting of Electron Microscope Society of India, University of Delhi, India, July 9-11, 2014, Page No: 434 (EMSI-2014).
13. Non-linear Behaviour of coercivity to the maximum Applied Field in La3+ substituted Nanocrystalline cobalt ferrite. Lawrence Kumar, Pawan Kumar and Manoranjan Kar, International Conference on Magnetic Materials and Applications, IIT Guwahati, 05-07 December, 2013,(MagMA-2013).
14. Coercivity Response to the Maximum Applied Field in Nanocrystalline cobalt ferrite. Lawrence Kumar, Pawan Kumar and Manoranjan Kar, International Conference on Structural and Physical properties of Solids, ISM-Dhanbad, November18th -20th , 2013,(SPPS-2013).
15. Comparative studies on magnetocrystalline anisotropy constant of CoFe1.5M0.5O4, M=Al&Cr. Lawrence Kumar, Pawan Kumar and Manoranjan Kar, Condensed Matter Days-2012 (CMDAYS-2012), BIT Mesra, August 29th-31st, 2012. Proceedings of CMDAYS-2012 conference published in Physics Express, Vol-3, 2013, pp.1-6.
16. Cations Distribution studies in Spinel Ferrites from XRD pattern by Rietveld Method. Lawrence Kumar, Pawan Kumar and Manoranjan Kar. International conference and workshop on nanostructured ceramics and other nanomaterials, Delhi University, March 13-16, 2012, (ICWNCN-2012).
17. Influence of non-magnetic substitution on the structural and magnetic properties of nanocrystalline spinel cobalt ferrite. Lawrence Kumar, Pawan Kumar and Manoranjan Kar, International Conference on Nanomaterials and Nanotechnology, University of Delhi, 18 December-21 December, 2011, (ICNANO-2011).
18. Influence of Mn substitution on crystal structure and magnetocrystalline anisotropy of nanocrystalline cobalt ferrite. Lawrence Kumar, Pawan Kumar and Manoranjan Kar, International Conference on Nanomaterials and Nanotechnology, University of Delhi, 18 December-21 December, 2011, (ICNANO-2011).
19. Structural and Magnetic Properties of Nanocrystalline La-substituted Cobalt Ferrite. Lawrence Kumar and Manoranjan Kar, International Conference on Materials for Advanced Technologies, Suntec, Singapore, 26 June-1 July, 2011, Page No. 147 (ICMAT-2011).
20. Effect of Annealing Temperature on Magnetic Anisotropy in Nanocrystalline Cobalt Ferrite. Lawrence Kumar and Manoranjan Kar, International Magnetic Conference, Taipei, Taiwan, April 25-29, 2011 (INTERMAG-2011).
21. Influence of La3+ Ion Concentration on the Magnetic Anisotropy of Nanocrystalline Spinel Cobalt Ferrite. Lawrence Kumar and Manoranjan Kar, National Seminar on Nanomaterials and Their Applications, Indian School of Mines Dhanbad, India, February 10-11, 2011, Page No.17 (NANOMAT-2011).
22. Magnetic Anisotropy in Nanocrystalline Chromium Substituted Cobalt Ferrite. Lawrence Kumar and Manoranjan Kar, Current Trends in Condensed Matter Physics, National Institute of Science Education and Research Bhubaneswar, India, December15-19, 2010, Page No.74  (CTCMP-2010).
23. Magnetic Anisotropy of Nanocrystalline Aluminium Substituted Cobalt Ferrite. Lawrence Kumar and Manoranjan Kar, International Conference on Magnetic Materials, Saha Institute of Nuclear Physics Kolkata, India, October25-29, 2010, Page No.306 (ICMM-2010).

Workshop participation

1. Participated in one week national workshop on “Advanced Physical Tools and Techniques for materials characterization” (APTTMC-2020): Department of Physics, Mahatma Gandhi Central University Motihari, 28th July to 3rd August 2020.
2. Participation in two days INUP familiarization workshop on Nanofabrication Technologies at IIT Patna on 8th to 9th October 2015.
3. Participation in Electron Microscopy Workshop: University of Chicago’s Center in Delhi, New Delhi, India, July 7, 2014.
4. Participation in Workshop on Electron Microscopy in Material Science: University of Delhi, New Delhi, India, July 8, 2014.

Faculty Development Programme (FDP) participation

1. Successfully completed 8 week NPTEL course on “Scanning Electron/ion/probe microscopy in materials characterization” which is equivalent to one week FDP, NPTEL-AICTE, February-April 2021.
2. Participated in FDP on “Trends in Chemical Sciences: Challenges and opportunities in the coming decade” organized by Department of Chemistry, Central University of Jharkhand, 21st to 26th September 2020.
3. Participated in AICTE Training and Learning Academy FDP on 3D Printing and Design from 03-02-2020 to 07-02-2020 at Central University of Jharkhand.
4. Successfully completed 8 week NPTEL course on “Solar Photovoltaics, Fundamentals, Technology and Application” which is equivalent to one week FDP, NPTEL-AICTE, July-September 2019.

Short Term Training Programme (STTP)

1. Participated in short term training programme on “Fundamental and Application of Nanomaterials” conducted by National Institute of Technical Teachers Training and Research, Kolkata (NITTTR, Kolkata) from       22-07-2019 to 02-08-2019 (2 weeks)
2. Participated in short term training programme on “Testing and Health Benefits of Drinking Water” conducted by National Institute of Technical Teachers Training and Research, Kolkata (NITTTR, Kolkata) from 07-09-2020 to 18-09-2020 (2 weeks)

Refresher Course

1. Participated in UGC sponsored Refreshers course in Basic Science conducted by HRDC Ranchi University, January 9th to 28th, 2016.
2. Participation in UGC sponsored Refreshers course in Women Studies and Gender Sensitization conducted by HRDC, Ranchi University, July 20th to 3rd August, 2018.

Orientation Course

1. Participation in UGC sponsored Orientation Course conducted by HRDC Ranchi University, February 2nd to 23rd, 2014.

Membership in Professional and Scientific Societies:

1. Life member Magnetic Society of India
2. Life member Electron Microscope Society of India

1st September, 2021