My Publications:

Journals:

i. Synthesis and Growth of Ga(1-x)Fe((x)Sb, a new III-V diluted magnetic semiconductor
N Karar and S Basu, Materials Science and Engineering:B, 60, 21, (1999)

ii. Vertical Bridgman growth and morphology study of Ga(1-x)Fe(x)Sb, new diluted magnetic semiconductor
N Karar, S Basu and S R Sainkar, Journal of Alloys and Compounds, 307, 272, (2000)

iii. Optical absorption and photoluminescence spectra studies on the III-V diluted magnetic semiconductor, Ga(1-x)Fe(x)Sb
N Karar, S Basu, R Venkataraghavan and B M Arora, Journal of Applied Physics, 88, 924-926, (2000)

iv. Microhardness as a function of iron concentration in Ga(1-x)Fe(x)Sb - a novel III-V diluted magnetic semiconnductor
N Karar and S Basu, Materials Science and Engineering:B, 79, 183, (2001)

v. Ballistic Magnetoresistance in a Nanocontact between a Ni Cluster and a Magnetic Thin Film.
M. Muñoz, G.G. Qian, N. Karar, H. Cheng, I.G. Saveliev and N. García  & T. P. Moffat, P. J. Chen, L. Gan, and W. F. Egelhoff Jr, Applied Physics Letters, 79, 2946 (2001)

vi. Photoluminescence study of Mn doped ZnS nanoparticles
N Karar, F Singh and B R Mehta, Journal of Applied Physics, 95(2), 656,  (2004)

vii. Properties of nanocrystalline ZnS: Mn
N Karar, Suchitra Raj and F Singh, Journal of Crystal Growth, 268, 585,  (2004)

viii. Enhancement of luminescent properties of ZnS:Mn nanophosphors by controlled ZnO capping
N Karar, Harish Chander, and S M Shivaprasad, Applied Physics Letters, 85, 5058 (2004)

ix.  Photoluminescence study of the sol-gel derived (Ba0.5Sr0.5)TiO3 thin films for characterization of trap states
Somnath Chandra Roy, Mukesh Chander Bhatnagar, Ganapat Lal Sharma, Nirmalya Karar, and Harish Chander, Japanese Journal of Applied Physics, 44 (1A), 34, (2005)

x. Variation of luminescence in different type of Zn(OH)2
N Karar and K. N. Sood (Communicated)
xi. Luminescence properties of ZnS based doped nano phosphors
N. Karar and Harish Chander  (an invited paper in the special issue on Doped Nano materials),  Journal of Nanoscience and Nanotechnology, 5, 1498, (2005) Ed. By  Wei Chen)

xii. Luminescenceproperties of cerium doped nanocrystalline Yttrium silicate
N. Karar and Harish Chander, Journal of Physics D: Applied Physics, 38, 3580, (2005)

xiii. Formation of cobalt silicide as a buried layer in silicon using high energy heavy  ion irradiation
B. R. Chakraborty, S. K. Halder, N. Karar, D. Kabiraj, and D. K. Avasthi, Journal of Physics D: Applied Physics, 38, 2836, (2005)

xiv. CdS:Mn Thin Film Synthesis Using Pulse Electrodeposition Technique
Kiran Jain, N. Karar, H. Chandra, and Rashmi
ECS Trans. 1, (34) 13 (2006)

xv. CdSe Thin Film Preparation by Unipolar Current Pulse Electrodeposition Technique.
Kiran Jain, N. Karar and H. Chandra, Proceedings of MRS, Symposium F: Thin-Film Compound Semiconductor Photovoltaics, Spring, 2005,  865, F-14.35

xvi. Luminescence amplification in nanocrystals by polarized excitation
Santa Chawla, N. Karar & Harish Chander, Superlattices and Microstructures, 43, 132, (2008)

xvii. Structural, morphological and photoluminescence characteristics of sol-gel derived nano-phase CeO2 films deposited using citric acid
A. Verma, N Karar, A. Bakshi, Harish Chander, S. M Shivaprasad, and S. A. Agnihotri,  Journal of Nanoparticle Research, 9, 317, (2007)

xviii. Microstructural characteristics and photoluminescence performance of nano-grained thermally treated CeO2-TiO2 xerogels
Amita Verma, A. K. Srivastava, N. Karar, Harish Chander, and  S. A. Agnihotry,  Journal of Materials Research, 22 (5), 1182, (2007)

xix. Luminescence properties of nano Cd1-xZnxS:Ag by reverse Micelle technique
N. Karar, Muthres Jaiswal,  S. K. Halder  and Harish Chander,  Journal of Alloys and Compounds, 436, 61, (2007)

xx. Structure, Microstructure and Photoluminescence properties of Fe doped SnO2 thin films
Sanju Rani , Somnath C Roy, N Karar, M C Bhatnagar, Solid State Communication, 141, 214,  (2007)

xxi. Photoluminescence from doped nano ZnS nanostructures
N Karar, Solid State Communication, 142, 261,  (2007)

xxii. Role of Mn substitution in nanocrystalline ZnS
N. Karar and R K Kotnala (book chapter published by Nova Science Publications USA)

xxiii. Morphological and Interfacial Investigations at Ni/Si System
Shivani Agarwal, Ankur Jain, N. Karar, B. R. Chakraborty, Ajay Gupta, and I. P. Jain, Journal of Scanning Probe Microscopy, 2, 1, (2007)

xxiv.  Synthesis, characterization and photoluminescence properties of Mn doped ZnS nanorods
Kiran Jain, Rashmi, M.Kar, N. Karar and H.Chander, Nanotrends: A Journal of Nanotechnology and its applications, 4, 40, (2008)

xxv.(communicated)

xxvi.  (communicated)

Conferences:

i. Growth and some studies of Ga(1-x)Fe(x)Sb, a novel III-V semi-magnetic semiconductor
N Karar and S Basu (Presented at the IUMRS-ICA' 98 held at Bangalore, India October 13th-16th 1998)

ii. Recent development in III-V diluted magnetic semiconductors
S Basu, N Karar and T Adhikari (Presented at the SCMP' 99 held at IACS, Calcutta, India, December 6th-8th 1999)

iii. Synthesis and Characterization of Size-Selected ZnO Nanoparticles
V. N. Singh, N Karar, M Chawla and B R Mehta (Presented at National Symposium of Nanostructured Materials, IIT Delhi, India, December 5th -6th 2002)

iv.  Properties of nanocrystalline ZnS: Mn
N Karar, R Suchitra and F Singh (Presented at IUMRS-2003, Symposium-H, Singapore, December 7th –12th 2003)

v. Luminescence properties of Ag doped ZnS nanoparticles correlated using TEM
N Karar, Harish Chander, D Haranath, Sukhvir Singh, Ram Kishore and Fouran Singh (presented at
EMSI 2004, NPL, New Delhi, April 1-3rd 2004)

vi. Luminescence properties of nano Cd1-xZnxS:Ag by reverse Micelle technique
N. Karar, M. Jaiswal,  S. K. Halder  and Harish Chander, (Presented at the International Conference on Materials for Advanced Technologies, ICMAT 2005, Singapore, 3-8 July, 2005)

vii. Synthesis and luminescence studies on doped nano ZnS capped with ZnO
N. Karar and Harish Chander (National Conference on Luminescence and its Applications, Bangalore, February 2nd-4th 2005)
viii. CdSe Thin Film Preparation by Unipolar Current Pulse Electrodeposition Technique.
Kiran Jain, M. S. Rashmi, K. N. Sood, N. Karar and H. Chandra  (MRS spring Meeting 2005, March 28-April 1, San Francisco, CA, USA, Program / MRS Symposium F: Thin-Film Compound Semiconductor Photovoltaics)

ix. CdS:Mn thin film synthesis using pulse electrodeposition technique,
Kiran Jain, N Karar, H Chander, and Rashi Rashmi, (Symposium XIV: Physics and Chemistry of Luminescent Materials; 208th Meeting of the Electrochemical Society, California, 16th –21st October, 2005, USA)

x. Luminescence studies of ZnS:Mn  nanophosphors
Harish Chander, D Haranath,  and N Karar (IWPSD-2005, NPL, New Delhi, December13-16th )

xi. Origin of luminescence in pure nano crystalline ZnS
N Karar, Harish Chander and M Kar, ( IWPSD-2005, NPL, New Delhi, December13-16th )

xii. Nanocrystalline thin films by unipolar current pulse electrodeposition  technique
Kiran Jain, Rashmi, M Kar, N Karar and H Chander ( IWPSD-2005, NPL, New Delhi, December13-16th )

xiii. Preparation of nanocrystalline zinc oxide powder by hydrothermal method
Kiran Jain, Rashmi, N Karar and Harish Chander ( IWPSD-2005, NPL, New Delhi, December13-16th )

xiv. High energy heavy ion induced cobalt silicide formation as a buried layer in silicon
B R Chakraborty, S K Halder, N Karar, D Kabiraj and D K Avasthi (IWPSD-2005, NPL, New Delhi, December13-16th )

xv.  Defects, growth inhibition and photoluminescence properties of Fe doped SnO2 thin films
N. Karar, Sanju Rani, Somnath C. Roy, M. C. Bhatnagar (International Symposium on Frontiers in nanoscale science, technology and Education, August 15-19, 2006, Cochin, India)
xvi. Luminescence amplification in nanocrystals by polarized excitation
Santa Chawla, N. Karar & Harish Chander  (International Symposium on Frontiers in nanoscale science, technology and Education, August 15-19, 2006, Cochin, India)

xvii. VARIATION IN LUMINESCENCE IN DIFFERENT TYPE OF Zn(OH)2
N. Karar, Harish Chander, K N Sood (Eighth International Conference on Nanostructured Materials, NANO-2006, August 20-25, 2006, Indian Institute of Science, Bangalore, 560012, India

xviii. Detection of Mn doping content change in nanocrystalline ZnS:Mn
N. Karar, R K Kotnala and Devinder Gupta, (MRSI AGM, NPL, 12-14th February, 2007)

xix. Detecting Mn in nanocrystalline ZnS:Mn
N. Karar, R K Kotnala and Devinder Gupta, (MRSI Lucknow Chapter, National Workshop on Nanomaterials, 24-25th March, 2007)

xix. Pulsed laser deposition (PLD) based thin films and their phase related luminescence

N. Karar, B R Chakraborty, J. John, V.C. Bagwe, and P. Raychaudhari (Bangalore Nano 2007, December 6th- 7th , 2007)

xx. Fabrication of Inorganic EL panels based on nanostructured materials

N Karar, T. K. Chakraborty, 14th International Workshop on Inorganic and Organic Electroluminescence & 2008 International Conference on the Scienceand Technology of Emissive Displays and Lighting, Grand Hotel Duca D’Este, Bagni di Tivoli - Rome – Italy, 9-12 September, 2008
 

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