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Pushpendra Kumar's Discussions

In search of PostDoc Position in Materials Science (Nanotechnology)

Started this discussion. Last reply by David Garikai Chivenga Mar 3, 2011. 2 Replies

I am searching a post doc position in Materials Science (Nanotechnology). I have completed Ph.D. in Materials Science (Nanotechnology) from Dept of Physics, Banaras Hindu University on the topic…Continue

Tags: Materials, Science, (Nanotechnology), in, Position

 

Pushpendra Kumar's Page

Profile Information

I am...
Chemist, Physicist, Doctor, Student
My research field or area of interest innanotechnology
Nanotechnology
Semiconductor Nanomaterials
Interest in...
Semiconductor Nanostructured
Researchgroup, Institute, University, School, Company name
Department of Physics, Faculty of Science, Banaras Hindu University, Varanasi, U.P. India
Researchgroup, Institute, Company, University, School webpage
http://www.bhu.ac.in
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Pushpendra Kumar's Blog

Investigations on structural, optical and second harmonic generation in solvothermally synthesized pure and Cr-doped ZnO nanoparticles

Posted on December 25, 2011 at 12:46am 2 Comments

 

ABSTRACT.......

 

At the forefront of the current scientific revolution of nanoscience nanocrystals (NCs), crystalline particles grown in liquid media, stand out over other classes of inorganic nanomaterials due to the high degree of control with which their crystal structure, size, shape, and surface functionalities can be engineered in the synthesis stage and to the versatility with which they can be processed and implemented into a large spectrum of devices and…

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Room temperature ferromagnetism in magic-sized Cr-doped CdS diluted magnetic semiconducting quantum dots

Posted on December 25, 2011 at 12:36am 0 Comments

 

ABSTRACT...

 

Manipulation of carrier spins in semiconductors for spintronics applications has received great attention driven by improved functionalities and higher speed operation. Doping of semiconductor nanocrystals by transition-metal ions pronounced as diluted magnetic semiconductors (DMS) has attracted tremendous attention. Such doping is, however, difficult to achieve in low-dimensional strongly quantum-confined nanostructures by conventional growth procedures.…

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Quantum Phase Transition from Superparamagnetic to Quantum Superparamagnetic State in Ultra Small CdSe: Cr2+ Quantum Dots by Pushpendra Kumar, Kedar Singh, JACS, DOI: 10.1021/ja2088426

Posted on December 25, 2011 at 12:33am 0 Comments

 

Despite a long history of success in the synthesis, the origin of magnetism in diluted magnetic semiconductors (DMSs) is yet a controversial issue. Doping, that is, intentional incorporation of impurities into a material, is the crucial means of alteration the electronic, optical and magnetic properties of semiconductors. Cr-based DMSs go halves with the other due to remarkable magnetic and magneto-optic properties, originating from the "sp-d" exchange interaction…

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|Quantum Phase Transition from Superparamagnetic to Quantum Superparamagnetic State in Ultra Small CdSe: Cr2+ Quantum Dots"

Posted on December 25, 2011 at 12:28am 0 Comments

Despite a long history of success in the synthesis, the origin of magnetism in diluted magnetic semiconductors (DMSs) is yet a controversial issue. Doping, that is, intentional incorporation of impurities into a material, is the crucial means of alteration the electronic, optical and magnetic properties of semiconductors. Cr-based DMSs go halves with the other due to remarkable magnetic and magneto-optic properties, originating from the "sp-d" exchange interaction flanked by the band…

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Comment Wall (5 comments)

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At 9:31am on September 14, 2011,
Full member
KAVIYARASU
said…

Hi Pushpendara Kumar,

 

Congratulation ! 

Best of luck, Do well. 

At 6:13am on September 13, 2011,
Full member
Kannan Natarajan
said…
Congratulation......
At 5:21am on September 13, 2011,
Full member
Ashok Nawale
said…

Congratulations!!!

Best Luck for your feature research work.

At 11:44am on August 9, 2010,
Full member
Shivam Rastogi
said…
Hello Sir , Plz send me contact details n ur no. @ shivam.ece.juit@gmail.com need to talk to you regarding Nano Science
At 10:04pm on June 14, 2010,
Full member
TINC
said…
 
 
 

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