Local structure and photocatalytic properties of sol–gel derived Mn–Li co-doped ZnO diluted magnetic semiconductor nanocrystals

RSC Advances ◽  
2016 ◽  
Vol 6 (27) ◽  
pp. 22852-22867 ◽  
Author(s):  
Deepak Kumar Dubey ◽  
Digvijay Narayan Singh ◽  
Shiv Kumar ◽  
Chandrani Nayak ◽  
Pathik Kumbhakar ◽  
...  
Keyword(s):  
Light Emission ◽  
Dye Degradation ◽  
Diluted Magnetic Semiconductor ◽  
Semiconductor Nanocrystals ◽  
Sol Gel ◽  
Magnetic Semiconductor ◽  
Degradation Activity ◽  
Diluted Magnetic ◽  
Synthesized Materials ◽  
Co Doped

The synthesized materials with visible light emission and dye degradation activity can be used effectively in future optoelectronic devices and in water purification for cleaning of dyes.

Structural and optical properties of sol–gel derived Cr-doped ZnO diluted magnetic semiconductor nanocrystals: an EXAFS study to relate the local structure

RSC Advances ◽  
2016 ◽  
Vol 6 (109) ◽  
pp. 107816-107828 ◽  
Author(s):  
Shiv Kumar ◽  
N. Tiwari ◽  
S. N. Jha ◽  
S. Chatterjee ◽  
D. Bhattacharyya ◽  
...  
Keyword(s):  
Optical Properties ◽  
Diluted Magnetic Semiconductor ◽  
Semiconductor Nanocrystals ◽  
Sol Gel ◽  
Magnetic Semiconductor ◽  
Structural And Optical Properties ◽  
Exafs Study ◽  
Doped Zno ◽  
Complementary Techniques ◽  
Diluted Magnetic

Structural, local structural and optical properties of sol–gel derived Zn1−xCrxO (0 ≤ x ≤ 0.06) nanoparticles have been thoroughly studied by several complementary techniques.

The impact of hydrogenation conditions on the physical properties of the degenerated Ni/Al co-doped diluted magnetic semiconductor anatase nanoparticles

2021 ◽  
Vol 11 ◽  
Author(s):  
A. A. Dakhel
Keyword(s):  
Diluted Magnetic Semiconductor ◽  
Magnetic Semiconductor ◽  
Precipitation Method ◽  
Optical Absorption Spectroscopy ◽  
X Ray Diffraction ◽  
Ferromagnetic Properties ◽  
Anatase Nanoparticles ◽  
Diluted Magnetic ◽  
The Impact ◽  
Co Doped

: Anatase (TiO2) nanoparticles co-doped with Ni/Al ions were synthesized by a thermo-precipitation method. The samples were characterized by using X‐Ray diffraction and optical absorption spectroscopy. The structural/optical investigations established the development of substitutional solid solutions: TiO2:Ni:Al. The magnetization investigations were performed to study the generated stable ferromagnetic properties of the samples due to the Ni2+ doping. To boost the created ferromagnetic properties, Al ions co-dopings were employed to supply/densify the itinerant electrons. It was planned to decide the suitable hydrogenation conditions and temperature (TH), which are necessary to create appreciable strength of ferromagnetic properties in the host co-doped samples based on TiO2 for practical uses. The results established that the ferromagnetic energy (Umag) was increased by ~240% and the saturation magnetization by ~140% with increasing of TH from 400 oC to 500oC. The obtained Msat was higher by ~50 times than that previously attained for Ni-doped TiO2. Such novel results were discussed and explained through the spin-spin Heisenberg interactions.

scholarly journals Diluted Magnetic Semiconductor Nanocrystals in Glass Matrix

Nanocrystals ◽  
10.5772/10094 ◽  
2010 ◽  
Author(s):  
Noelio Oliveira ◽  
Ernesto Soares De Freitas Neto ◽  
Ricardo Souza Da Silv
Keyword(s):  
Glass Matrix ◽  
Diluted Magnetic Semiconductor ◽  
Semiconductor Nanocrystals ◽  
Magnetic Semiconductor ◽  
Diluted Magnetic

scholarly journals Magnetic Properties of Co doped ZnS Diluted Magnetic Semiconductor

2013 ◽  
Vol 430 ◽  
pp. 012076 ◽  
Author(s):  
Qingteng Hou ◽  
Kai Chen ◽  
Hongguang Zhang ◽  
Yongtao Li ◽  
Hao Liu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Diluted Magnetic Semiconductor ◽  
Magnetic Semiconductor ◽  
Diluted Magnetic ◽  
Co Doped

Electronic structure and magnetic properties of diluted magnetic semiconductor K and Mn co-doped BaCd2As2 from first-principles calculations

2014 ◽  
Vol 28 (14) ◽  
pp. 1450111 ◽  
Author(s):  
L. Hua ◽  
Q. L. Zhu
Keyword(s):  
Magnetic Properties ◽  
Electronic Structure ◽  
Density Functional ◽  
Diluted Magnetic Semiconductor ◽  
Magnetic Semiconductor ◽  
Antiferromagnetic Coupling ◽  
Generalized Gradient ◽  
Diluted Magnetic ◽  
Mn Doped ◽  
Co Doped

In this paper, we have investigated the electronic structure and magnetic properties of K and Mn co-doped BaCd 2 As 2 using density functional theory within the generalized gradient approximation ( GGA ) + U schemes. Calculations show that the ground state magnetic structure of Mn -doped BaCd 2 As 2 is antiferromagnetic while K and Mn co-doped BaCd 2 As 2 is ferromagnetic. Electronic structures indicate that the superexchange mechanism leads to the antiferromagnetic coupling between Mn atoms in Mn -doped BaCd 2 As 2 while the hole-mediated Zener's p–d exchange mechanism leads to the ferromagnetic coupling between Mn atoms in K and Mn co-doped BaCd 2 As 2.

Effect of Growth Temperature on Structural and Magneto-Transport Properties of Co-Doped In2O3 Diluted Magnetic Semiconductors

2008 ◽  
Vol 1119 ◽  
Author(s):  
A Ghosh ◽  
R K Gupta ◽  
P K Kahol ◽  
K Ghosh
Keyword(s):  
Transport Properties ◽  
Growth Temperature ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Diluted Magnetic Semiconductor ◽  
Magnetic Semiconductor ◽  
Force Microscopy ◽  
Atomic Force ◽  
Diluted Magnetic ◽  
Co Doped

AbstractThin films of Co-doped In2O3 diluted magnetic semiconductor have been grown on c-plane sapphire single crystals using pulsed laser deposition technique. Different characterizations such as x-ray diffraction, atomic force microscopy, and magneto-transport have been carried out to study the effect of growth temperature on structural, electrical, and magneto-transport properties of these films. Crystalinity of the films increases with the growth temperature. The films grown at high temperature have preferred orientation along (222) direction, while films grown at low temperature behave more like to nanocrystaline. It is observed that electrical properties of the films strongly depend on growth temperature. The resistivity and magnetoresistance of the films decreases with increase in growth temperature. On the other hand, mobility of the films increases with increase in growth temperature. This could be due to improvement in crystalinity of the films.

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