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Article
Extraction of Critical Current Density and Flux Creep Exponent in the Magnetic Superconductor Ru-1212 Using the ac Magnetic Susceptibility Measurements
The ac susceptibility data was employed to extract the temperature dependence of the critical current density, J c(T), as well as the variation of flux-creep exponent n(T,H ...
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Article
On the Applicability of the Magnetic Susceptibility Models for the Magnetic Superconductor Ru-1212
The applicability of theoretical models for the ac susceptibility measurements of polycrystalline RuSr2GdCu2O8 superconductor has been examined within the temperature range between 8–50 K, ac magnetic field 0.5–...
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Article
Pinning Energies and Relaxation Rates in Laser Ablated Al-Doped YBCO Superconducting Thin Films
Systematic magnetization measurements were performed on laser ablated Al-doped YBCO thin films in the temperature range from 4 to 80 K and fields up to 12 T. The magnetization as a function of logarithmic time...
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Article
Scaling Behavior and Estimation of Activation Energy of Polycrystalline RuSr2GdCu2O8 Superconductor from AC Susceptibility Measurements
In this study, the measured curves of AC susceptibility (ACS) components, χ′(T) and χ″(T), of polycrystalline RuSr2GdCu2O8 (Ru-1212) superconductor were scaled onto a single curve using the peak temperature of it...
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Article
Specific heat, pressure, and the Grüneisen relation in solid hydrogen
We report systematic measurements ofC v and (∂P/∂T) v in solid hydrogen below 1 K and for orthohydrogen molar concentrations 0.58≥X ortho≥0.20. This is the temperature and conce...