scholarly journals Emergence of Concentration Effects in the Variational Analysis of the N ‐Clock Model

2021 ◽  
Author(s):  
Marco Cicalese ◽  
Gianluca Orlando ◽  
Matthias Ruf
Keyword(s):  
Variational Analysis ◽  
Concentration Effects ◽  
Clock Model

Synthesis and study the Structural and electrical and mechanical properties of High Temperature Superconductor Tl0.5Pb0.5Ba2Can-1Cun-xNixO2n+3-δ Substituted with nickel oxide for n=3

2018 ◽  
Vol 31 (3) ◽  
pp. 26 ◽  
Author(s):  
Laheeb. A. Mohammed ◽  
Kareem. A. Jasim
Keyword(s):  
Nickel Oxide ◽  
High Temperature Superconductor ◽  
Sintering Temperature ◽  
Concentration Effects ◽  
High Tc ◽  
Xrd Diffraction ◽  
Ni Content ◽  
High Tc Phase ◽  
Pure Phases ◽  
Critical Temperature Tc

   on this research is to study the effect of nickel oxide substitution on the pure phases superconductor Tl0.5Pb0.5Ba2Can-1Cun-xNixO2n+3-δ (n=3) where x=(0,0.2,0.4,0.6,0.8.and 1.0). The specimens in this work were prepared with used  procedure of solid state reaction with sintering temperature 8500C for 24 h .we used technical (4-prob)to calculated and the critical temperature Tc . The results of the XRD diffraction analysis showed that the structure for pure and doped phases was tetragonal with phases high-Tc phase (1223),(1212) and low-Tc phase (1202)  and add to the presence of some impure phase. It was noted the value a=b,c  the parameter of  the lattice increment  with the increment of Ni content. The increment of (NiO) concentration effects electrical resistivity, dielectric constant and the hardness.

A Rubidium Clock Model,

1986 ◽  
Author(s):  
Robert P. Frueholz ◽  
James C. Camparo
Keyword(s):  
Clock Model ◽  
Rubidium Clock

scholarly journals Recent development in nonlinear and variational analysis and optimization

Optimization ◽  
2021 ◽  
Vol 70 (4) ◽  
pp. 689-692
Author(s):  
Elisabeth Köbis ◽  
Jinlu Li ◽  
Adrian Petruşel ◽  
Jen-Chih Yao
Keyword(s):  
Variational Analysis ◽  
Variational Analysis And Optimization
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