Co doped CdTe powder samples were prepared by solid-state reaction method. In the present work effect of Co doping on structural, optical, and magnetic properties has been studied. X-ray diffraction studies confirm zinc blend structure for all the samples. The lattice parameter showed linear increase with the increase in Co content. The elemental constituents were characterized by EDAX. Optical studies showed the increase in band gap with increase in Co level. The samples were diluted magnetic semiconductors and exhibited clear hysteresis loop showing room temperature ferromagnetism as confirmed by vibrating sample magnetometer.

Shaik Kaleemulla

Department of Physics

School of Advanced Sciences

Vellore Campus

Rigana Begam M

Rao N.M

Joshi G.M

Sai Krishna N

Kuppan M.

Fulltext

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Structural, Optical, and Magnetic Properties of Co Doped CdTe Alloy Powders Prepared by Solid-State Reaction Method

Advances in Condensed Matter Physics

Tin doped ZnS powders (Zn1−xSnxS, x = 0.00, 0.02, 0.05&amp;0.08) were synthesized by a simple Solid state reaction and were characterized by Powder X-ray diffractometer (XRD), UV–Vis–NIR diffuse reflectance spectrophotometer, fluorescence spectrophotometer, scanning electron microscope (SEM) and vibrating sample magnetometer (VSM). The XRD studies revealed that no change in crystal structure was observed by the substitution of Sn into ZnS lattice. The crystallite size was calculated by Scherrer's formula and found that the crystallize size of Sn doped ZnS powders were in the range of 35–45 nm. From the diffused reflectance spectra, the band gap values of Zn1−xSnxS powders were estimated, and they were found to be in the range of 3.53–3.58 eV. The pure ZnS particles showed higher optical absorption in visible region than that of Sn doped ZnS nano particles. The Photoluminescence (PL) spectra of Zn1−xSnxS powders were recorded in the range of 400–700 nm with an excitation wavelength of 360 nm. The Zn1−xSnxS powders exhibited ferromagnetism at low temperature (100 K) and super paramagnetism at room temperature (300 K). The strength of magnetization increased with increase of Sn doping concentration from 0.015 emu/g to 0.18 emu/g, when x increased from 0.00–0.05. © 2017 Elsevier B.V.

Physica B: Condensed Matter

Structural, optical and magnetic properties of Sn doped ZnS nano powders prepared by solid state reaction

Journal of Alloys and Compounds

Structural, magnetic and optical properties of Co-diffused CdTe thin films

Applied Physics Letters

Antiferromagnetism in bulk Zn1−xCoxO magnetic semiconductors prepared by the coprecipitation technique

Solid State Communications

Optical and magnetic properties of laser-deposited Co-doped ZnO thin films

Materials Science and Engineering: R: Reports

Advances in wide bandgap materials for semiconductor spintronics

Journal of Physics: Condensed Matter

Magnetic susceptibility and compositional dependence of the energy gap in Cd1-xCoxTe

Journal	Advances in Condensed Matter Physics
Publisher	Hindawi Limited
ISSN	1687-8108
Open Access	Yes