scholarly journals Proximity effect model of ultranarrow NbN strips

2017 ◽  
Vol 96 (18) ◽  
Author(s):  
I. Charaev ◽  
T. Silbernagel ◽  
B. Bachowsky ◽  
A. Kuzmin ◽  
S. Doerner ◽  
...  
Keyword(s):  
Proximity Effect ◽  
Effect Model

scholarly journals Generalized proximity effect model in superconducting bi- and trilayer films

2001 ◽  
Vol 90 (1) ◽  
pp. 355-364 ◽  
Author(s):  
G. Brammertz ◽  
A. Poelaert ◽  
A. A. Golubov ◽  
P. Verhoeve ◽  
A. Peacock ◽  
...  
Keyword(s):  
Proximity Effect ◽  
Effect Model

A proximity effect model for superconductivity in titanium-transition metal alloys

1981 ◽  
Vol 43 (3-4) ◽  
pp. 341-352 ◽  
Author(s):  
Y. Hariharan ◽  
M. C. Valsakumar ◽  
T. S. Radhakrishnan
Keyword(s):  
Transition Metal ◽  
Proximity Effect ◽  
Metal Alloys ◽  
Transition Metal Alloys ◽  
Effect Model

scholarly journals Сверхпроводимость эвтектического сплава Bi-Sn

2021 ◽  
Vol 63 (2) ◽  
pp. 208
Author(s):  
М.В. Лихолетова ◽  
Е.В. Чарная ◽  
Е.В. Шевченко ◽  
Ю.А. Кумзеров
Keyword(s):  
Phase Transition ◽  
Phase Diagram ◽  
Magnetic Fields ◽  
Field Dependence ◽  
Proximity Effect ◽  
Coherence Length ◽  
Eutectic Composition ◽  
Positive Curvature ◽  
Two Stage ◽  
Effect Model

We present results of studies of superconductivity in a binary Bi-Sn alloy of the eutectic composition (57 wt.% Bi, 43 wt.% Sn). Temperature and field dependences of the dc magnetization were measured within a temperature range from 1.8 to 20 K in magnetic fields up to 20 kOe using a Quantum Design MPMS3 SQUID magnetometer. A two-stage phase transition with temperatures of the diamagnetism onset of 8.55 and 5.1 K was observed. A phase diagram was constructed. The coherence length for the first stage was estimated. The field dependence of the irreversibility temperature was found. Critical dependencies showed a positive curvature which was treated within the framework of the proximity effect model.

scholarly journals A Versatile Simulation-Assisted Layered Mesh Analysis for Generalized Litz Wire Performance

2021 ◽  
Author(s):  
Noah Salk ◽  
Chathan Cooke
Keyword(s):  
Finite Element ◽  
Cross Section ◽  
Analytical Solutions ◽  
Analytical Method ◽  
Proximity Effect ◽  
Skin Effect ◽  
Ac Loss ◽  
Two Dimensional ◽  
Arbitrary Geometry ◽  
Effect Model

This paper introduces a semi-analytical method of predicting AC loss in commercial Litz wires. Simple finite-element simulations are used to compute the resultant proximity fields in a coil system of arbitrary geometry. The approach addresses non-ideal Litz wire construction by applying a surrogate skin effect model to inform and distribute the current over the cross-section into segmented layers. This simplifies the finite-element problem into a two-dimensional, DC simulation with a low number of mesh elements. Analytical solutions are then used to compute frequency-dependent loss due to skin and proximity effect. The method is demonstrated using two 14 AWG equivalent Litz wires with very different constructions and is validated with experimental results from several coil configurations. Finally, an appeal is made to commercial Litz wire manufacturers to provide an empirical "fabrication factor" specification that would allow consumers to predict the performance of a conductor in their application.

scholarly journals Proximity effect model for x-ray transition edge sensors

2018 ◽  
Author(s):  
Rebecca C. Harwin ◽  
Stafford Withington ◽  
David J. Goldie ◽  
Pourya Khosropanah ◽  
Luciano Gottardi ◽  
...  
Keyword(s):  
Proximity Effect ◽  
Transition Edge Sensors ◽  
X Ray ◽  
Transition Edge ◽  
Effect Model

Electron-beam proximity effect model calibration for fabricating scatterometry calibration samples

2012 ◽  
Author(s):  
Yu-Tian Shen ◽  
Chun-Hung Liu ◽  
Chih-Yu Chen ◽  
Hoi-Tou Ng ◽  
Kuen-Yu Tsai ◽  
...  
Keyword(s):  
Electron Beam ◽  
Proximity Effect ◽  
Model Calibration ◽  
Effect Model ◽  
Calibration Samples

scholarly journals Динамическая восприимчивость нанокомпозита пористое стекло/Ga-In-Sn в области сверхпроводимости

2022 ◽  
Vol 64 (1) ◽  
pp. 40
Author(s):  
О.Д. Шевцова ◽  
М.В. Лихолетова ◽  
Е.В. Чарная ◽  
Е.В. Шевченко ◽  
Ю.А. Кумзеров ◽  
...  
Keyword(s):  
Proximity Effect ◽  
Positive Curvature ◽  
Ac Susceptibility ◽  
Superconducting Phase ◽  
Self Healing ◽  
Activation Barriers ◽  
Nanostructured Alloys ◽  
Effect Model ◽  
Gallium Alloys ◽  
Critical Lines

Interest to studies of gallium alloys increased recently in relation to their prospective applications for self-healing superconducting connections and wires. Special attention is focused on superconductive properties of nanostructured alloys. In the present work we studied the ac susceptibility of a porous glass/Ga-In-Sn nanocomposite within the temperature range from 1.9 to 8 K at bias fields up to 5 T. Two superconducting phase transitions were revealed with temperatures of 5.6 and 3.1 K. Phase diagrams were created. Positive curvature of the parts of critical lines was demonstrated and treated within the framework of a proximity effect model. Vortex activation barriers were found from shifts of the maxima of the imaginary parts of susceptibility with changing the ac frequency. A bend was shown on the field dependence of the activation barriers.

scholarly journals A Versatile Simulation-Assisted Layered Mesh Analysis for Generalized Litz Wire Performance

2021 ◽  
Author(s):  
Noah Salk ◽  
Chathan Cooke
Keyword(s):  
Finite Element ◽  
Cross Section ◽  
Analytical Solutions ◽  
Analytical Method ◽  
Proximity Effect ◽  
Skin Effect ◽  
Ac Loss ◽  
Two Dimensional ◽  
Arbitrary Geometry ◽  
Effect Model

This paper introduces a semi-analytical method of predicting AC loss in commercial Litz wires. Simple finite-element simulations are used to compute the resultant proximity fields in a coil system of arbitrary geometry. The approach addresses non-ideal Litz wire construction by applying a surrogate skin effect model to inform and distribute the current over the cross-section into segmented layers. This simplifies the finite-element problem into a two-dimensional, DC simulation with a low number of mesh elements. Analytical solutions are then used to compute frequency-dependent loss due to skin and proximity effect. The method is demonstrated using two 14 AWG equivalent Litz wires with very different constructions and is validated with experimental results from several coil configurations. Finally, an appeal is made to commercial Litz wire manufacturers to provide an empirical "fabrication factor" specification that would allow consumers to predict the performance of a conductor in their application.

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