Effects of temperature on electrical conductivity behaviour of Ce(1–x)Ag(x)O2 by combustion synthesis technique

2017 ◽  
Author(s):  
I. Mubeena Parveen ◽  
G. Saravanan ◽  
V. Asvini ◽  
K. Ravichandran ◽  
D. KalaiSelvi
Keyword(s):  
Electrical Conductivity ◽  
Combustion Synthesis ◽  
Synthesis Technique ◽  
Conductivity Behaviour ◽  
Effects Of Temperature ◽  
Combustion Synthesis Technique

Bi-combustion synthesis technique for the reduction of crystallite size of nanophosphors - a modified version

2021 ◽  
pp. 1469-1475
Author(s):  
D. S. Kshatri, Shubhra Mishra, Vikas Dubey
Keyword(s):  
Crystallite Size ◽  
Combustion Synthesis ◽  
High Efficiency ◽  
Milling Process ◽  
Synthesis Technique ◽  
Crystallite Sizes ◽  
Average Size ◽  
20 Nm ◽  
Physical And Chemical ◽  
Combustion Synthesis Technique

Nanophase materials, in recent times, have attracted many a researcher all over the world, on account of their exceptionally high efficiency in terms of morphological and optical behavior. In the nano-range order, various physical and chemical methods are employed to produce materials commercially, but the reported methods owing to their own physical conditions, limit the crystallite sizes to a certain nano-order. To prevail over this size-related limitation, a new modified bi-combustion synthesis technique (B-CST) has been introduced, which aids inthe formation of nanomaterials, with an average size of 10-20 nm, without using any ball milling process. In order to scrutinize the crystallite sizes of SrAl2O4: Eu2+, Dy3+ phosphors synthesized by CST and B-CST, the X-ray diffraction (XRD) technique is used to determine the crystalline phase only while high-resolution transmission electron microscopy (HRTEM) is used, which is the most sought-after method world-wide and is vigorously used to determine the crystallite size.

scholarly journals Combustion synthesis of nanoparticulate LiMgxMn1−xPO4 (x = 0, 0.1, 0.2) carbon composites

2010 ◽  
Vol 25 (8) ◽  
pp. 1460-1468 ◽  
Author(s):  
Marca M. Doeff ◽  
Jiajun Chen ◽  
Thomas E. Conry ◽  
Ruigang Wang ◽  
James Wilcox ◽  
...  
Keyword(s):  
Combustion Synthesis ◽  
Discharge Rate ◽  
Carbon Composites ◽  
Active Materials ◽  
Coated Particles ◽  
Secondary Particles ◽  
Synthesis Technique ◽  
Carbon Coated ◽  
Mg Content ◽  
Combustion Synthesis Technique

A combustion synthesis technique was used to prepare nanoparticulate LiMgxMn1−xPO4 (x = 0, 0.1, 0.2)/carbon composites. Powders consisted of carbon-coated particles about 30 nm in diameter, which were partly agglomerated into larger secondary particles. The utilization of the active materials in lithium cells depended most strongly on the post-treatment and the Mg content and was not influenced by the amount of carbon. Best results were achieved with a hydrothermally treated LiMg0.2Mn0.8PO4/C composite, which exhibited close to 50% utilization of the theoretical capacity at a C/2 discharge rate.

A NEW COMBUSTION SYNTHESIS TECHNIQUE FOR RARE EARTH-DOPED III-NITRIDE LUMINESCENT POWDERS

2001 ◽  
Vol 15 (17n19) ◽  
pp. 655-658 ◽  
Author(s):  
F. E. RAMOS ◽  
R. GARCIA ◽  
G. A. HIRATA ◽  
E. J. BOSZE ◽  
J. MCKITTRICK
Keyword(s):  
Combustion Synthesis ◽  
High Purity ◽  
Exothermic Reaction ◽  
Metal Nitrate ◽  
High Chemical ◽  
Chemical Homogeneity ◽  
Synthesis Technique ◽  
Temperature Method ◽  
Rare Earth Doped ◽  
Combustion Synthesis Technique

A new low temperature method to produce ( (RE)xGa1-x)2O3(1≥x≥0 and RE=Eu, Yb, Pr and Tm) powders with high purity, high chemical homogeneity and improved crystallinity has been developed. This procedure produces finely divided powders through an exothermic reaction between the precursors. The process starts with aqueous solutions of RE(NO3)3 and Ga(NO3)3 as the precursors and hydrazine as the (non-carbonaceous) fuel. The combustion reaction occurs when heating the precursors between 150 and 200°C in a closed vessel filled with an inert gas (Ar), which yields (RExGa1-x)2O3 directly. The preparation of RE-doped Ga2O3 powders was using a new combustion synthesis technique (Hydrazine / metal nitrate method). The preparation of Eu-doped GaN was using the ammonium hexafluoro-metal method. The powders were crystalline and high-purity as determined by XPS, EDS, SEM and XRD measurements.

Characteristics of Porous B4C-Al2O3Composites Fabricated by the Combustion Synthesis Technique

2004 ◽  
Vol 11 (1) ◽  
pp. 5-14 ◽  
Author(s):  
H.C. Yi ◽  
J.Y. Guigné ◽  
L.A. Robinson ◽  
A.R. Manerbino ◽  
J.J. Moore
Keyword(s):  
Combustion Synthesis ◽  
Synthesis Technique ◽  
Combustion Synthesis Technique
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