Browsing by Author "Kilic, A"
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Current dependent reorganization in superconducting Y1Ba2Cu3O7delta
We present strong nonlinear dynamic responses developing due to magnitude and type of driving current in bulk polycrystalline superconducting Y1Ba2Cu3O7delta sample at zero magnetic field. Several novel types of dynamic ... 
Currentinduced voltage oscillations in superconducting Y1Ba2Cu3O7delta
Kilic, K; Kilic, A; Altinkok, A; Yetis, H; Cetin, O (Springer, 2005)We investigated influence of bidirectional square wave current with long periods and dc current on the evolution of the voltagetime (V  t) curves in superconducting polycrystalline bulk Y1Ba2Cu3O7delta (YBCO) material ... 
Effect of cooling rates on bare bulk and silver wrapped pellets of Bi2223 superconductor
Terzioglu, C; Ozturk, O; Kilic, A; Gencer, A; Belenli, I (Elsevier, 2006)We have examined the effect of cooling rates on oxygen content of Bi2223 phase samples with and without silver sheating. Two sets of samples with and without silver sheating were annealed under identical conditions and ... 
Grain size dependence of the currentvoltage characteristics and critical current density in the selffield approximation
Kilic, A; Kilic, K; Senoussi, S (Amer Inst Physics, 1998)In the selffield approximation, the influence of the grain radius on the currentvoltage characteristics and associated critical current density J(c) are investigated by considering the conventional flux flow motion of ... 
Influence of the current sweep rate on vortex dynamics in superconducting YBa2Cu3O7x
The effect of the current sweep rate (CSR) on the vortex dynamics in superconducting bulk sample of YBa2Cu3O7delta has been investigated at the temperatures near the critical temperature. It has been found that the CSR ... 
Lowfield behavior of Tiadded MgB2/Cu superconducting wires
Gencer, A; Kilic, A; Guclu, N; Ozyuzer, L; Belenli, I (IeeeInst Electrical Electronics Engineers Inc, 2005)We report on lowfield magnetic properties of Tiadded (020 wt. % of Ti) Cuclad MgB2 superconducting wires. Wires were produced by mixing appropriate amount of Ti and reacted MgB2 powder which was then placed inside Cu ... 
Lowfield magnetovoltage measurements in superconducting Y1Ba2Cu3O7delta
We investigated the influences of field orientation with respect to transport current, magnitude of transport current, temperature and fieldsweep rate (dH/dt) on the evolution of magnetovoltage (V  H) curves in polycrystalline ... 
Lowfield transport relaxation measurements in superconducting Y1Ba2Cu3O7delta
This paper demonstrates the details of the vortex dynamics correlated to the penetrated state by means of the evolution of time dependence of voltage V for both at low and moderate dissipation levels. The transport relaxation ... 
Magnetic and electronic measurements in CeB6
Terzioglu, C; Ozturk, O; Kilic, A; Goodrich, RG; Fisk, Z (Elsevier, 2006)We have performed AC and DCelectrical resistivity, magnetization and magnetoresistance measurements of CeB6 with temperature Lip to 250 K and the magnetic field tip to 5 T. From these measurements, three magnetic phases ... 
Single particle motion in onedimensional pinning potentials
For different fields and temperatures, in terms of 1D overdamped Brownian motion, the voltagecurrent characteristics EJ, the current dependence of resistivity Q and broadening in the temperature dependence of Q have been ... 
Thermally activated vortex diffusion in high Tc superconductors
Due to the thermal activation, for different fields and temperatures, the voltagecurrent EJ characteristics, current J and temperature T dependence of the resistivity p rho of layered HighTc superconductors (HTSC) have ... 
Time evolution of quenched state and correlation to glassy effects
In this work, dynamic changes generated by the driving current were studied in superconducting bulk polycrystalline YBCO sample via transport relaxation measurements (Vt curves). The evolution of nonlinear Vt curves was ... 
Transport relaxation phenomena in superconducting Y1Ba2Cu3O7delta
Transport relaxation measurements (Vt) were carried out in bulk superconducting Y1Ba2Cu2O7delta ceramic samples as a function of driving current (I), temperature (T), and external magnetic field (H). The evolution of the ... 
Vortex diffusion in onedimensional pinning potentials
The dynamics of the vortices in onedimensional sinusoidally varying and logarithmic pinning potentials with thermal fluctuations are considered, and a simple model based on a single vortex description is introduced. For ... 
Vortex instability and hysteresis effects in IV curves of superconducting Y1Ba2Cu3O7delta
We have investigated the effect of the current sweep rate (CSR) on the vortex dynamics in superconducting bulk sample of Y1Ba2Cu3O7delta. It has been found that the CSR has several dramatic effects on the vortex motion ... 
Vortex instability and time effects in IV curves of superconducting Y1Ba2Cu3O7delta
We have investigated the effect of the current sweep rate (CSR) on the vortex dynamics in a superconducting bulk sample of Y1Ba2Cu3O7delta. It has been found that the CSR has several effects on vortex motion in that it ...