Critical temperature profile determination using a modified London equation for inhomogeneous superconductors

1986 ◽  
Vol 63 (1-2) ◽  
pp. 35-55 ◽  
Author(s):  
J. R. Cave ◽  
J. E. Evetts
Keyword(s):  
Critical Temperature ◽  
Temperature Profile ◽  
Inhomogeneous Superconductors ◽  
London Equation

Fractional Meissner–Ochsenfeld effect in superconductors

2019 ◽  
Vol 33 (26) ◽  
pp. 1950316 ◽  
Author(s):  
J. F. Gómez-Aguilar
Keyword(s):  
Magnetic Field ◽  
Critical Temperature ◽  
Fractional Calculus ◽  
Fractional Order ◽  
Mathematical Tool ◽  
Conformable Derivative ◽  
Science And Engineering ◽  
Interest In Science ◽  
London Equation ◽  
Physical Phenomena

Fractional calculus (FC) is a valuable tool in the modeling of many phenomena, and it has become a topic of great interest in science and engineering. This mathematical tool has proved its efficiency in modeling the intermediate anomalous behaviors observed in different physical phenomena. The Meissner–Ochsenfeld effect describes the levitation of superconductors in a nonuniform magnetic field if they are cooled below critical temperature. This paper presents analytical solutions of the fractional London equation that describes the Meissner–Ochsenfeld effect considering the Liouville–Caputo, Caputo–Fabrizio–Caputo, Atangana–Baleanu–Caputo, fractional conformable derivative in Liouville–Caputo sense and Atangana–Koca–Caputo fractional-order derivatives. Numerical simulations were obtained for different values of the fractional-order.

Excess Conductivity of Anisotropic Inhomogeneous Superconductors Above the Critical Temperature

2019 ◽  
Vol 61 (9) ◽  
pp. 1549-1552
Author(s):  
T. I. Mogilyuk ◽  
P. D. Grigoriev ◽  
K. K. Kesharpu ◽  
I. A. Kolesnikov ◽  
A. A. Sinchenko ◽  
...  
Keyword(s):  
Critical Temperature ◽  
Excess Conductivity ◽  
Inhomogeneous Superconductors

scholarly journals Conductivity of anisotropic inhomogeneous superconductors above the critical temperature

2018 ◽  
Vol 98 (1) ◽  
Author(s):  
S. S. Seidov ◽  
K. K. Kesharpu ◽  
P. I. Karpov ◽  
P. D. Grigoriev
Keyword(s):  
Critical Temperature ◽  
Inhomogeneous Superconductors

Optical properties of the Vanadium dioxide

2015 ◽  
Vol 8 (2) ◽  
pp. 2148-2155 ◽  
Author(s):  
Abderrahim Benchaib ◽  
Abdesselam Mdaa ◽  
Izeddine Zorkani ◽  
Anouar Jorio
Keyword(s):  
Energy Efficiency ◽  
Optical Properties ◽  
Critical Temperature ◽  
Thin Layer ◽  
Dielectric Function ◽  
Vanadium Dioxide ◽  
Ultra Violet ◽  
Index Of Refraction ◽  
Practical Utility ◽  
Infra Red

The vanadium dioxide is a material thermo chromium which sees its optical properties changing at the time of the transition from the phase of semiconductor state ↔ metal, at a critical temperature of 68°C. The study of the optical properties of a thin layer of VO₂ thickness 82 nm, such as the dielectric function, the index of refraction, the coefficient ofextinction, the absorption’s coefficient, the reflectivity, the transmittivity, in the photonic spectrum of energy ω located inthe interval: 0.001242 ≤ ω (ev) ≤ 6, enables us to control well its practical utility in various applications, like the intelligentpanes, the photovoltaic, paintings for increasing energy efficiency in buildings, detectors of infra-red (I.R) or ultra-violet(U.V). We will make simulations with Maple and compare our results with those of the literature

Control Algorithms for Inductors Movement in Induction Heated Calenders

2012 ◽  
Vol 17 (4) ◽  
pp. 51-57
Author(s):  
Andrzej Frązyk ◽  
Piotr Urbanek ◽  
Jacek Kucharski
Keyword(s):  
Temperature Profile ◽  
Induction Heating ◽  
Control Algorithms ◽  
Uniform Temperature ◽  
Cylinder Axis ◽  
Steel Cylinder ◽  
Modern Technologies ◽  
Temperature Amplitude

Abstract Fixed, placed at regular distances inductors for induction heating of a rotating steel cylinder do not provide sufficiently uniform temperature profile along cylinder axis required by modern technologies,. The article examines the influence of inductors movement along the cylinder axis on the reduction of pick-to- pick temperature amplitude.

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