Material Science (Experimental)

• Ph D , 2011 , University of Delhi
• M Sc Physics , 2004 , University of Delhi
• B Sc (Hons) Physics , 2001 , University of Delhi

10 years (Teaching)

Analog Electronics (Elect. Hons.) Applied Physics (Elect. Hons.) Physics of Devices and Instrumentation Analog Electronics (Phys. Hons.) Thermal Physics Mechanics Digital Electronics Microprocessor 8085 & Computer Programming Electromagnetic Theory Solid State Physics Oscillation and Waves Modern Physics, Nuclear and Particle Physics

“Study of thickness modified magneto-transport in doped manganite thin films”, April 2006 (registered), January 2011 (awarded)

1. P. Kumar, R. Prasad, A. K. Srivastava, N. Vijayan, R. K. Dwivedi and H. K. Singh

“Microstructural and magnetotransport properties of La1-xCaxMnO3 (0.45 ≤ x ≤ 0.60) thin films”

Journal of Alloys and Compound, VOL - 531, Page – 23, Citation: 00

Year 2011

2. P. Kumar, R. Prasad, R. K. Dwivedi and H. K. Singh

“Out of plane low field anisotropic magnetoresistance in Nd0.51Sr0.49MnO3 thin films”

Journal of Magnetism and Magnetic Materials, VOL - 323, Page – 2564, Citation: 00

3. P. Kumar, R. Prasad, R. K. Dwivedi and H. K. Singh

“Anomalous Weak Ferromagnetism in Electron Doped Nd1-xSrxMnO3 (0.50<x<0.62) Thin Films”

Journal of Korean Physical Society, VOL - 59, Page – 2792, Citation: 00

4. P. Kumar, R. Prasad, P. K. Siwach, R. K. Dwivedi and H. K. Singh

“Magneto-Transport properties of La0.8Sr0.2Mn1-xCuxO3 thin films fabricated by using spray pyrolysis”

Journal of Korean Physical Society, VOL - 58, Page – 58, Citation: 00

Year 2010

5. M. K. Srivastava, R. Prasad, P. K. Siwach, M. P. Singh and H. K. Singh

“Impact of size mismatch induced quenched disorder on phase fluctuation and low field magnetotransport in polycrystalline Nd0.58-xGdxSr0.42MnO3”

Journal of Applied Physics, VOL - 107, Page - 09D726, Citation: 01

6. V. Agarwal, R. Prasad, M. P. Singh, P. K. Siwach, A. Srivastava, P. Fournier, and H. K. Singh

“Evidence of substrate induced charge order quenching, insulator metal transition, and colossal magnetoresistance in polycrystalline Pr0.58Ca0.42MnO3 thin films”

Applied Physics Letter, VOL - 96, Page – 052512, Citation: 09

7. R. Prasad, M. P. Singh, P. K. Siwach, A. Kaur, P. Fournier and H. K. Singh

“Effect of thickness on magnetic phase coexistence and electrical transport in Nd0.51Sr0.49MnO3 films”

Applied Physics A, VOL - 99, Page – 823, Citation: 01

Year 2009

8. R. Prasad, M. P. Singh, W. Prellier, P. K. Siwach, R. Rawat, A. Kaur and H. K. Singh

“Comparative study of transport properties of compressively strained epitaxial and polycrystalline La0.88Sr0.12MnO3 thin films”

Physica Status Solidi B, VOL - 246, Page – 1662, Citation: 07

9. H. K. Singh, P. Kumar, R. Prasad, M. P. Singh, V. Agarwal, P. K. Siwach and P. Fournier

“Impact of magnetic phase coexistence on magnetotransport in polycrystalline Nd0.51Sr0.49MnO3 thin film”

Journal of Physics D: Applied Physics, VOL - 42, Page – 105009, Citation: 00

Year 2008

10. R. Prasad, M. P. Singh, P. K. Siwach, P. Fournier and H. K. Singh

“Anomalous insulator-metal transition and weak ferromagnetism in Nd0.37Sr0.63MnO3 thin films”

Europhysics Letters, VOL - 84, Page – 27003, Citation: 04

11. R. Prasad, H. K. Singh, M. P. Singh, W. Prellier, P. K. Siwach and A. Kaur

“Thickness dependent transport properties of compressively strained La0.88Sr0.12MnO3 ultrathin films”

Journal of Applied Physics, VOL - 103, Page – 083906, Citation: 11

Year 2007

12. R. Prasad, Anurag Gaur, P. K. Siwach, G. D. Varma, A. Kaur and H. K. Singh

“Effect of large compressive strain on low field electrical transport in La0.88Sr0.12MnO3 thin films”

Journal of Physics D: Applied Physics, VOL - 40, Page – 295, Citation: 08

 13. R. Prasad, M. P. Singh, P. K. Siwach, W. Prellier and H. K. Singh

“Enhanced magneto-electrical properties and room temperature magnetoresistance in lightly doped manganite thin films”

Solid State Communication, VOL - 142, Page – 445, Citation: 10

14. P. K. Siwach, V. P. S. Awana, H. Kishan, R. Prasad, H. K. Singh, S. Balamurugan, E. Takayama-Muromachi and O. N. Srivastava

“Room temperature magneto-resistance and temperature coefficient of resistance in La0.7Ca0.3-xAgxMnO3 thin films”

Journal of Applied Physics, VOL - 101, Page – 073912, Citation: 16

15. P. K. Siwach, R. Prasad, A. Gaur, H. K. Singh, G. D. Varma and O. N. Srivastava “Microstructure-magnetotransport correlation in La0.7Ca0.3MnO3”

Journal of Alloys and Compounds, VOL - 443, Page – 26, Citation: 22

[1] R. Prasad, M. P. Singh, P. K. Siwach, V. Agarwal, P. Kumar, A. Kaur and H. K. Singh “Impact of thickness on magnetic phase coexistences and electrical transport in the vicinity of multi-critical point in Nd1-xSrxMnO3 thin film” International Conference on Quantum effects in Solids of Today (I-ConQuEST) (Poster presentation) Dec 20-23, 2010, National Physical Laboratory, New Delhi, India [2] R. Prasad, M. P. Singh, A. Kaur and H. K. Singh “Out-of-plane anisotropy magnetoresistance in compressive strained and polycrystalline thin film of Nd0.51Sr0.49MnO3” 11th Joint MMM-Intermag Conference (Poster presentation) Jan 18-22, 2010, Washington DC, USA [3] Manoj K. Srivastava, R. Prasad, P. K. Siwach, M. P. Singh, and H. K. Singh “Impact of size mismatch induced quenched disorder on phase fluctuation and low field magnetotransport in polycrystalline Nd0.58-xGdxSr0.42MnO3” 11th Joint MMM-Intermag Conference (Poster presentation) Jan 18-22, 2010, Washington DC, USA [4] P. Kumar, R. Prasad, P. K. Siwach, R. K. Dwivedi and H. K. Singh, “Structural and transport properties of B-site Cu doped La0.80Sr0.20MnO3 thin film on LaAlO3 by spray pyrolysis” International Conference on Electroceramic-2009 (Poster presentation) December 13-17, 2009, University of Delhi, Delhi, India [5] P. Kumar, V. Singh, R. Prasad, H.K. Singh and R. K. Dwivedi, “Magneto-electrical studies in LSMO-BTO bulk and nano composites” International conference on Materials and Advances Technologies & International Union of Material Research Societies-International Conference in Asia-2009 (Oral presentation) July 3, 2009, Singapore [6] A. Gupta, P. Kumar, R. Prasad, H. K. Singh, and R. K. Dwivedi “Compositional tunning of magneto-transport properties in Pb doped NdMnO3” International Conference on Transport & Optical Properties of Nanomaterials (Poster presentation) Jan 5-8, 2009, University of Allahabad, Allahabad 211002, India