Influence of structural evolution on the magnetic behavior of the nanocrystals of Fe-doped ZnO synthesized by soft chemical route

2017 ◽  
Vol 123 (10) ◽  
Author(s):  
L. V. Bhandarkar
Keyword(s):  
Structural Evolution ◽  
Magnetic Behavior ◽  
Chemical Route ◽  
Doped Zno ◽  
Soft Chemical Route

scholarly journals Room temperature ferromagnetic behavior in the nanocrystals of Fe doped ZnO synthesized by soft chemical route

2019 ◽  
Vol 37 (3) ◽  
pp. 364-372
Author(s):  
L. V. Bhandarkar
Keyword(s):  
Calcination Temperature ◽  
Spinel Phase ◽  
Secondary Phase ◽  
Nanocrystalline Phase ◽  
Ferromagnetic Behavior ◽  
Unusual Behavior ◽  
Chemical Route ◽  
Doped Zno ◽  
Zno Powder ◽  
Soft Chemical Route

AbstractIn the present study, nanocrystalline undoped and Fe (5 wt.%) doped ZnO powder has been synthesized by soft chemical route. The structural, nano/microstructural, vibrational and magnetic properties of these samples have been studied as a function of calcination temperature (400 °C to 1100 °C). X-ray diffraction analysis of Fe doped ZnO powder has shown the major nanocrystalline wurtzite (ZnO) phase and the minor cubic spinel-like secondary nanocrystalline phase at 700 °C. At calcination temperature of 700 °C, the magnetization and coercivity have been enhanced in Fe doped ZnO. As the calcination temperature increased to 1100 °C, the major phase of ZnO and minor cubic spinel-like secondary phase turned into bulk in doped ZnO. Interestingly, the reduced magnetization and zero coercivity have been observed in this case. These changes are attributed to the conversion of secondary nanocrystalline ferromagnetic spinel phase to its bulk paramagnetic phase. The degree of inversion i.e. the occupancy of both sites with different symmetry by ferric ions is proposed to be solely responsible for the unusual behavior.

scholarly journals Formation of defect-fluorite structured NdNiOxHy epitaxial thin films via a soft chemical route from NdNiO3 precursors

2016 ◽  
Vol 45 (30) ◽  
pp. 12114-12118 ◽  
Author(s):  
T. Onozuka ◽  
A. Chikamatsu ◽  
T. Katayama ◽  
T. Fukumura ◽  
T. Hasegawa
Keyword(s):  
Thin Films ◽  
Chemical Reaction ◽  
Fluorite Structure ◽  
Epitaxial Thin Films ◽  
Chemical Route ◽  
New Phase ◽  
Soft Chemical Route

A new phase of oxyhydride NdNiOxHy with a defect-fluorite structure was obtained by a soft chemical reaction of NdNiO3 epitaxial thin films on a substrate of SrTiO3 (100) with CaH2.

Band gap engineering and enhanced photoluminescence of Mg doped ZnO nanoparticles synthesized by wet chemical route

2015 ◽  
Vol 161 ◽  
pp. 275-280 ◽  
Author(s):  
Mohd. Arshad ◽  
Mohd. Meenhaz Ansari ◽  
Arham S. Ahmed ◽  
Pushpendra Tripathi ◽  
S.S.Z. Ashraf ◽  
...  
Keyword(s):  
Band Gap ◽  
Zno Nanoparticles ◽  
Chemical Route ◽  
Band Gap Engineering ◽  
Enhanced Photoluminescence ◽  
Wet Chemical ◽  
Wet Chemical Route ◽  
Doped Zno ◽  
Mg Doped

Soft chemical route and new solid oxide fuel cells

Ionics ◽  
1998 ◽  
Vol 4 (5-6) ◽  
pp. 463-471 ◽  
Author(s):  
Xia Changrong ◽  
Gu Yunfeng ◽  
Peng Dingkun ◽  
Meng Guangyao
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Chemical Route ◽  
Soft Chemical Route

Experimental and theoretical investigations on magnetic behavior of (Al,Co) co-doped ZnO nanoparticles

Nanoscale ◽  
2010 ◽  
Vol 2 (8) ◽  
pp. 1505 ◽  
Author(s):  
O. D. Jayakumar ◽  
S. N. Achary ◽  
C. Sudakar ◽  
R. Naik ◽  
H. G. Salunke ◽  
...  
Keyword(s):  
Zno Nanoparticles ◽  
Magnetic Behavior ◽  
Theoretical Investigations ◽  
Doped Zno ◽  
Co Doped

scholarly journals Simple New Method for the Preparation of La(IO3)3 Nanoparticles

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2400 ◽  
Author(s):  
Zoulikha Hebboul ◽  
Amira Ghozlane ◽  
Robin Turnbull ◽  
Ali Benghia ◽  
Sara Allaoui ◽  
...  
Keyword(s):  
Single Phase ◽  
New Method ◽  
X Ray Diffraction ◽  
Chemical Route ◽  
X Ray ◽  
The Common ◽  
Controlled Preparation ◽  
Iodate Ions ◽  
Scanning Electron ◽  
Soft Chemical Route

We present a cost- and time-efficient method for the controlled preparation of single phase La(IO3)3 nanoparticles via a simple soft-chemical route, which takes a matter of hours, thereby providing an alternative to the common hydrothermal method, which takes days. Nanoparticles of pure α-La(IO3)3 and pure δ-La(IO3)3 were synthesised via the new method depending on the source of iodate ions, thereby demonstrating the versatility of the synthesis route. The crystal structure, nanoparticle size-dispersal, and chemical composition were characterised via angle- and energy-dispersive powder X-ray diffraction, scanning electron microscopy, and Fourier-transform infrared spectroscopy.

scholarly journals Selective Synthesis and Luminescence Properties of Nanocrystalline GdF3:Eu3+with Hexagonal and Orthorhombic Structures

2010 ◽  
Vol 2010 ◽  
pp. 1-7 ◽  
Author(s):  
Xiaoting Zhang ◽  
Tomokatsu Hayakawa ◽  
Masayuki Nogami ◽  
Yukari Ishikawa
Keyword(s):  
Formation Mechanism ◽  
Room Temperature ◽  
Luminescence Properties ◽  
Selective Synthesis ◽  
Orthorhombic Structure ◽  
Chemical Route ◽  
Structure And Morphology ◽  
First Time ◽  
Soft Chemical Route

GdF3:Eu3+nanophosphors with hexagonal or orthorhombic structure have been succeeded to be selectively synthesized at room temperature for the first time via a simple soft chemical route. The structure and morphology of GdF3:Eu3+nanophosphors were controlled by using different fluoride precursors. Hexagonal GdF3:Eu3+nanocrystals were formed when NaBF4was used as a fluoride precursor, while orthorhombic GdF3:Eu3+nanocrystals were obtained with NaF or NH4F fluoride precursor. It was also experimentally revealed that hexagonal GdF3:Eu3+nanophosphors emitted essentially stronger Eu3+luminescence than orthorhombic ones did. The formation mechanism of GdF3nanocrystals and the possible reasons of the strong PL in hexagonal were discussed.

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