Template-Free Synthesis and Characterization of Single-Phase Voided Poly(o-anisidine) and Polyaniline Colloidal Spheres

2007 ◽  
Vol 19 (23) ◽  
pp. 5773-5778 ◽  
Author(s):  
Yiwei Tan ◽  
Feng Bai ◽  
Dingsheng Wang ◽  
Qing Peng ◽  
Xun Wang ◽  
...  
2011 ◽  
Vol 239-242 ◽  
pp. 2851-2854 ◽  
Author(s):  
Jin Yu Yang ◽  
Yu Chang Su ◽  
Zhuo Chen ◽  
Xue Ying Liu

Phase-pure Eu3+doped Gd2Sn2O7nanocrystals have been successfully synthesized via a co-precipitation processes combined with hydrothermal treatment. The crystal structure, particle size, morphologies, composition, and photoluminescence properties of the as-synthesized products were investigated by XRD, SEM, TEM, EDS and PL. The samples were single-phase cubic pyrochlore-type nanocrystals with a typical size of about 30 - 60 nm. All the samples exhibited irregular flower like secondary nanostructure assembled by primary nanoparticles. Photoluminescence properties of Gd2Sn2O7:Eu3+were investigated, and the results revealed that the as-synthesized materials displayed intense and prevailing emission located at 580 - 630 nm. The excitation spectra indicated that an energy transfer from Gd3+to Eu3+occurred. Meanwhile, the concentration quenching phenomenon was observed in Gd2Sn2O7:Eu3+nanocrystals.


2016 ◽  
Vol 21 (3) ◽  
pp. 172-176 ◽  
Author(s):  
Mukesh Kumar Atal ◽  
Ajay Saini ◽  
Ram Gopal ◽  
Meena Nagar ◽  
Veena Dhayal

2018 ◽  
Vol 54 (2) ◽  
pp. 1434-1442 ◽  
Author(s):  
M. A. Gharavi ◽  
G. Greczynski ◽  
F. Eriksson ◽  
J. Lu ◽  
B. Balke ◽  
...  

2019 ◽  
Vol 141 (22) ◽  
pp. 9047-9062 ◽  
Author(s):  
Georgiy Akopov ◽  
Wai H. Mak ◽  
Dimitrios Koumoulis ◽  
Hang Yin ◽  
Bryan Owens-Baird ◽  
...  

1989 ◽  
Vol 169 ◽  
Author(s):  
Lauren E. H. McMills ◽  
Shu Li ◽  
Zhen Zhang ◽  
Martha Greenblatt

AbstractSingle-phase samples of T12Ba2CaCu2O8 and T12Ba2Ca2Cu3O10 have been prepared using a reliable and simple synthetic method. Samples were characterized by x-ray powder diffraction, magnetic susceptibility and four probe resistivity methods. The TcR=0 values for T12Ba2CaCu2O8 ranged from 100 to 105K, whereas those for T12Ba2Ca2Cu3O10 ranged from 96 to 107K. The relationship between the superconducting properties and the various preparation conditions are discussed.


2012 ◽  
Vol 622-623 ◽  
pp. 860-863
Author(s):  
S. Hamidizadeh ◽  
A. Ataie ◽  
Amin Nozari

Barium hexaferrite/high density polyethylene composite was prepared from synthesized barium hexaferrite as matrix with 0, 10, 20, 30, 40 wt.% of high density polyethylene via a high energy planetary ball milling for 10 h. The milling products were isostatically pressed and finally sintered at 1250 °C for 1 h. Effect of HDPE content on morphology of the products were investigated using scanning electron microscope (SEM). Vibrating samplemagnetometer (VSM) analysis of single phase BaFe12O19 indicates saturation magnetization and coercivity of 52 emu/g and 4300 Oe, respectively. Visually, as the weight percent of the HDPE increases, more porous structure was observed. Moreover, the density of the sintered sampleslinearly decreased from 4.16 to 1.41 g/cm3 by increasing the amount of HDPE from 0 to 40 wt.%.


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