Please use this identifier to cite or link to this item: http://lib.jncasr.ac.in:8080/jspui/handle/10572/2221
Title: Uniform Doping in Quantum-Dots-Based Dilute Magnetic Semiconductor
Authors: Saha, Avijit
Shetty, Amitha
Pavan, A. R.
Chattopadhyay, Soma
Shibata, Tomohiro
Viswanatha, Ranjani
Keywords: Chemistry
Materials Science
Physics
Nanocrystal Heterostructures
Zeeman Splittings
Transition
Surface
Oxides
Xafs
Size
Fe
Ferromagnetism
Nanoparticles
Issue Date: 2016
Publisher: American Chemical Society
Citation: Saha, A.; Shetty, A.; Pavan, A. R.; Chattopadhyay, S.; Shibata, T.; Viswanatha, R., Uniform Doping in Quantum-Dots-Based Dilute Magnetic Semiconductor. Journal of Physical Chemistry Letters 2016, 7 (13), 2420-2428 http://dx.doi.org/10.1021/acs.jpclett.6b01099
Journal of Physical Chemistry Letters
7
13
Abstract: Effective manipulation of magnetic spin within a semiconductor leading to a search for ferromagnets with semiconducting properties has evolved into an important field of dilute magnetic semiconductors (DMS). Although a lot of research is focused on understanding the still controversial origin of magnetism, efforts are also underway to develop new materials with higher magnetic temperatures for spintronics applications. However, so far, efforts toward quantum-dots(QDs)-based DMS materials are plagued with problems of phase separation, leading to nonuniform distribution of dopant ions. In this work, we have developed a strategy to synthesize highly crystalline, single-domain DMS system starting from a small magnetic core and allowing it to diffuse uniformly inside a thick CdS semiconductor matrix and achieve DMS QDs. X-ray absorption fine structure (XAFS) spectroscopy and energy-dispersive X-ray spectroscopy scanning transmission electron microscopy (STEM-EDX) indicates the homogeneous distribution of magnetic impurities inside the semiconductor QDs leading to superior magnetic property. Further, the versatility of this technique was demonstrated by obtaining ultra large particles (similar to 60 nm) with uniform doping concentration as well as demonstrating the high quality magnetic response.
Description: Restricted Access
URI: http://hdl.handle.net/10572/2221
ISSN: 1948-7185
Appears in Collections:Research Papers (Ranjani Viswanatha)

Files in This Item:
File Description SizeFormat 
220.pdf
  Restricted Access
5.66 MBAdobe PDFView/Open Request a copy


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.