Experimental and theoretical determination of physical properties of Sm2Bi2Fe4O12 ferromagnetic semiconductors

2020 ◽  
Vol 8 (42) ◽  
pp. 14925-14938
Author(s):  
Javier A. Cuervo Farfán ◽  
Críspulo E. Deluque Toro ◽  
Carlos A. Parra Vargas ◽  
David A. Landínez Téllez ◽  
Jairo Roa-Rojas
Keyword(s):  
Solid State ◽  
Physical Properties ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Ferromagnetic Semiconductors ◽  
Theoretical Determination ◽  
Reaction Method

Polycrystalline samples of Sm2Bi2Fe4O12 were produced by the standard solid state reaction method.

Determination of the Self-Diffusion Coefficient of Ni2+in La2NiO4+δby the Solid State Reaction Method

2012 ◽  
Vol 159 (6) ◽  
pp. B702-B708 ◽  
Author(s):  
Nebojša Čebašek ◽  
Reidar Haugsrud ◽  
Jovan Milošević ◽  
Zuoan Li ◽  
Jens B. Smith ◽  
...  
Keyword(s):  
Diffusion Coefficient ◽  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
The Self ◽  
Reaction Method ◽  
Self Diffusion ◽  
Self Diffusion Coefficient

Effects of Ag Addition on Superconductivity and Microstructure of DyBa2Cu3O7-δ-Ag Composite

2006 ◽  
Vol 517 ◽  
pp. 41-44
Author(s):  
Baktiar Musa ◽  
Ahmad K. Yahya ◽  
Faizah Md. Salleh ◽  
R. Abd-Shukor
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Physical Properties ◽  
Solid State Reaction ◽  
Silver Content ◽  
High Temperature Superconductors ◽  
Solid State Reaction Method ◽  
Metallic Silver ◽  
Reaction Method ◽  
Ag Addition

This paper reports on the effects of Ag addition on physical properties of high temperature superconductors DyBa2Cu3O7-δ (Dy123). A series of the Dy123 - Agx composite was prepared by solid state reaction method with varying amount of metallic silver (x = 0 – 0.3). Resistance versus temperature measurement was done using the four-point-probe method in the temperature range of 79 K to 300 K. Pure DyBa2Cu3O7-δ was found to superconduct with Tc onset of 91 K and Tc zero of 78 K. Addition of Ag at x = 0.05 caused both Tc onset and Tc zero to increase to 93 K and 84 K, respectively. However, Tc onset and Tc zero dropped for higher silver contents. We found that the optimum silver content in DyBa2Cu3O7-δ for best superconducting behavior and hardness is between x = 0.05 and 0.10. Microstructure analysis using SEM and EDAX showed that most of the silver is uniformly distributed along the grain boundaries filling the pores and hence increasing the hardness of the samples.

Fabrication and Properties of Zinc Silicate Phosphors through Solid State Reaction

2010 ◽  
Vol 160-162 ◽  
pp. 594-598
Author(s):  
Guo Jian Jiang ◽  
Jia Yue Xu ◽  
Hui Shen ◽  
Yan Zhang ◽  
Lin He Xu ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Emission Peak ◽  
Zinc Silicate ◽  
Red Phosphor ◽  
Reaction Method ◽  
Long Afterglow ◽  
Luminescent Mechanism ◽  
Silicate Phosphors

Zinc silicate-based (Zn2SiO4:Eu3+) long afterglow phosphors were produced by solid state reaction method. The effects of borax and Eu2O3 additive on the properties of fabricated products have been studied. The results show that, there is not much difference in phase compositions within the borax additive amount; however, their SEM morphologies are different. Borax additive can increase the grain size of the product. Some sintering phenomena could be observed in the sample with Eu2O3 addition. The fluorescence spectroscopy results indicate that, the emission peak of the sample with Eu3+ additive located at 612nm, which may be a good candidate for red phosphor applications. The luminescent mechanism of Zn2SiO4:Eu3+ is also discussed.

Luminescence properties of dysprosium doped calcium magnesium silicate phosphor by solid state reaction method

2015 ◽  
Vol 649 ◽  
pp. 1329-1338 ◽  
Author(s):  
Ishwar Prasad Sahu ◽  
Priya Chandrakar ◽  
R.N. Baghel ◽  
D.P. Bisen ◽  
Nameeta Brahme ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Magnesium Silicate ◽  
Solid State Reaction Method ◽  
Luminescence Properties ◽  
Reaction Method ◽  
Silicate Phosphor ◽  
Calcium Magnesium
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