Near-oscillatory relaxation behavior of levitation force in infiltration and growth processed bulk YBCO/Ag superconducting composites

2011 ◽  
Vol 471 (13-14) ◽  
pp. 395-399 ◽  
Author(s):  
R. Parthasarathy ◽  
M.M. Lakshmi ◽  
V. Seshubai
Keyword(s):  
Levitation Force ◽  
Relaxation Behavior ◽  
Bulk Ybco ◽  
Oscillatory Relaxation

High Levitation Force and Trapped Field of Large Grain YBCO at 77K by Ga Doping

2000 ◽  
Vol 659 ◽  
Author(s):  
Yu X. Zhou ◽  
Wai Lo ◽  
Tong B. Tang ◽  
Kamel Salama
Keyword(s):  
Levitation Force ◽  
Field Trapping ◽  
Crystal Defects ◽  
Nanometer Scale ◽  
Pinning Force ◽  
Trapped Field ◽  
Flux Lines ◽  
Bulk Ybco ◽  
Magnetic Flux Lines ◽  
Ga Doping

ABSTRACTLevitation force and magnetic field trapping are the most important properties of YBCO large grain materials. They are dependent on the pinning force exerting on the magnetic flux lines by various crystal defects in YBCO. In this paper, Ga-doped bulk YBCO samples were fabricated by SmBCO seeded melt-growth process. The levitation force and trapped field were enhanced by the introduce of nanometer scale week superconducting regions which are formed by the Ga partially substituting for Cu on the Cu-O chain.

A study on levitation force and its time relaxation behavior for a bulk superconductor-magnet system

2008 ◽  
Vol 468 (15-20) ◽  
pp. 1461-1464 ◽  
Author(s):  
T. Suzuki ◽  
S. Araki ◽  
K. Koibuchi ◽  
K. Ogawa ◽  
K. Sawa ◽  
...  
Keyword(s):  
Levitation Force ◽  
Relaxation Behavior ◽  
Bulk Superconductor ◽  
Magnet System ◽  
Time Relaxation

Conductivity, Dielectric and Modulus study of NH4PF6 based Zwitterionic polymer electrolyte

2020 ◽  
Vol 13 ◽  
Author(s):  
Manindra Kumar ◽  
Neelabh Srivastava
Keyword(s):  
Polymer Electrolyte ◽  
Power Law ◽  
Loss Tangent ◽  
Electric Modulus ◽  
Relaxation Behavior ◽  
Conductivity Data ◽  
Frequency Range ◽  
Zwitterionic Polymer ◽  
Power Law Equation ◽  
Jonscher’S Power Law

Background and Objective: Zwitterionic polymer electrolyte has been successfully synthesized using NH4PF6 salt. The conductivity of the synthesized polymer membrane is found to be of the order of 10-3Scm-1. Dielectric and Modulus properties of the polymer electrolyte have also been studied which showed well relaxation peaks with both temperature and salt concentrations. Result: This is well depicted with the loss tangent curve. Debye type relaxation behavior has observed from the electric modulus. Conclusion: Frequency dependent conductivity data (fitted with Jonscher's power law equation) confirmed the presence of NCL/SLPL type behavior in the studied frequency range.

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