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Browsing by Author "Abukay, Doğan"
Now showing items 1-18 of 18
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Dependence of Josephson junction critical current on the deposition rate of YBa2Cu3O7-δ thin films
Algül, B. P.; Avcı, İlbeyi; Akram, R.; Bozbey, Ali; Tepe, Mustafa; Abukay, Doğan (American Institute of Physics Publising, 2007)We have reported the effect of YBa2Cu3O 7-δ (YBCO) thin film deposition rate on the 24 and 30 degree STO bicrystal Josephson junctions critical currents by fabricating series of junctions with different deposition rates. ... -
Developing a trilayer processing technique for superconducting YBa 2Cu3O7-δ thin films by using Ge ion implantation
Avcı, İlbeyi; Tepe, Mustafa; Öktem, Bülent; Serincan, Uğur; Turan, Raşit; Abukay, Doğan (IOP Publishing, 2005-04)For making trilayer superconducting devices based on YBa2Cu 3O7-δ (YBCO) thin film processing, we developed a new technique by employing Ge ion implantation. A YBCO thin film of 150 nm thickness having high c-axis orientation ... -
Effect of deposition conditions on YBa2Cu3O 7-δ thin films by inverted cylindrical magnetron sputtering and substrate effects
Avcı, İlbeyi; Tepe, Mustafa; Abukay, Doğan (Elsevier, 2004-05)The dependence of YBCO thin film properties on the deposition conditions was studied for different substrates. The deposition conditions were optimized for the epitaxial growth of high quality YBCO thin films of 1500 Å ... -
Effect of pelletization pressure on structural properties and critical current hysteresis of ceramic superconducting Bi1.7Pb0.3Sr2Ca2Cu3O y
Tepe, Mustafa; Avcı, İlbeyi; Abukay, Doğan (Wiley-VCH Verlag, 2003-08)The effect of pelletization pressures on structural properties and critical current hysteresis of Bi1.7Pb0.3Sr2Ca2Cu3Oy samples was investigated. The samples used in this study were prepared by classical solid-state reaction ... -
The effects of the post-annealing temperature on the growth mechanism of Bi2Sr2Ca1Cu2O8+ ∂ thin films produced on MgO (1 0 0) single crystal substrates by pulsed laser deposition (PLD)
Nane, O.; Özçelik, Bekir; Abukay, Doğan (Elsevie, 2013-06)The effects of post-annealing temperature were investigated on Bi 2Sr2Ca1Cu2O8+ ∂ thin films deposited on MgO (1 0 0) substrates by pulsed laser deposition (PLD). The structural and superconducting properties of the films ... -
The effects of the post-annealing time on the growth mechanism of Bi2Sr2Ca1Cu2O8+ thin films produced on MgO (100) single crystal substrates by pulsed laser deposition (PLD)
Nane, Onur; Özçelik, Bekir; Abukay, Doğan (Elsevier, 2016-04)Bi2Sr2Ca1Cu2O8+δï thin films were deposited on MgO (100) substrates by pulsed laser deposition (PLD). The effects of post-annealing time on the phase formation, the structural and superconducting properties of the films ... -
Electrical and magnetic properties of Si ion implanted YBa 2Cu3O7-δ thin films and microbridges
Avcı, İlbeyi; Tepe, Mustafa; Serincan, Uğur; Öktem, Bülent; Turan, Raşit; Abukay, Doğan (Elsevier, 2004-11)Fabrication of superconducting bilayer YBa2Cu3O 7-δ (YBCO) thin film structure by Si ion implantation and properties of microbridge patterned on that are presented. YBCO thin film of 150 nm thickness was grown on single ... -
Fabrication and charcterizarion of superconductor YBCO Josephson junctions
Algül, Berrin Pınar (Izmir Institute of Technology, 2008)A well-controlled, high-yield Josephson junction production process forms the basis of superconducting electronic device and circuit technology. In order to use the Josephson junctions effectively and fabricate them ... -
Fabrication of Lu doped YBCO thin films by pulsed laser deposition technique and their characterization
Sezer, Bahtiyar Şirvan (Izmir Institute of Technology, 2010)Nearly twenty years ago YBCO was the first superconductor discovered with a transition temperature above the boiling point of liquid nitrogen, the .fascinating. limit for high temperature superconductivity. From the day ... -
Fabrication of YBCO thin flims by pulsed laser deposiyion technique and their charcterization
Tozan, Şerife (Izmir Institute of Technology, 2010)This thesis focuses on pulsed laser deposition (PLD) system, fabrication of high temperature superconducting YBCO thin films and their characterization. In this study, the electrical and structural studies performed on ... -
High temperature superconducting YBa2Cu3O7-x transitation edge bolometers (TEBs) for infrared region
Günel, Hacı Yusuf (Izmir Institute of Technology, 2008)The thesis focuses on electrical and bolometric characterization of high temperature superconducting YBCO transition edge bolometers. In this study, superconducting YBCO thin films grown on MgO, LaAlO3 and SrTiO3 substrates ... -
High temperature superconducting YBa2Cu3O7-δ thin flims and bolometers
Öktem, Bülent (Izmir Institute of Technology, 2006)In this work, we report the results on the response characteristics of high temperature superconducting bolometers under the infrared and optical radiation. The bolometers were made of YBa2Cu3O7-. (YBCO) thin films deposited ... -
Investigation of the effect of thermal cycling on the device performance of YBa2Cu3O7-δ DC-SQUIDs
Avcı, İlbeyi; Algül, B. P.; Bozbey, Ali; Akram, R.; Tepe, Mustafa; Abukay, Doğan (IOP Publishing, 2007-10)We investigated the effect of thermal cycling on the operational performance of YBa2Cu3O7-δ (YBCO) direct current superconducting quantum interference devices (DC-SQUIDs) fabricated onto 24°SrTiO3 (STO) bicrystal substrates. ... -
Investigation of the variation in weak-link profile of YBa 2Cu3-xAgxO7-δ superconductors by Ag doping concentration
Tepe, Mustafa; Avcı, İlbeyi; Koçoğlu, H.; Abukay, Doğan (Elsevier, 2004-08)The effect of Ag doping concentration on the microstructure, transport properties and weak-link profile of YBa2Cu3-xAg xO7-δ bulk superconducting compound was investigated through resistance-temperature (R-T), ac magnetic ... -
Pixel array application of high temperature superconducting YBCO transition edge infrared bolometers
Pekerten, Barış (Izmir Institute of Technology, 2009)In this thesis, we patterned pregrown epitaxial YBCO thin films on MgO, LAO and STO substrates into meander shaped high-Tc superconducting transition edge monolithic bolometers. We set up and automatized the electrical ... -
Selection of the best proper DC-SQUIDs in a multi-SQUID configuration
Avcı, İlbeyi; Akram, R.; Bozbey, Ali; Tepe, Mustafa; Abukay, Doğan (IEEE, 2007-06)We have carried out experimental investigation of multi-DC-SQUID magnetometer configuration fabricated on YBa2Cu30 7-δ thin films onto 24 degree SrTiO3 bicrystal substrates by directly coupling the pick-up loop to DC-SQUIDs. ... -
Signal performance of DC-SQUIDs with respect to YBCO thin film deposition rate
Avcı, İlbeyi; Algül, Berrin Pınar; Akram, Rizwan; Bozbey, Ali; Tepe, Mustafa; Abukay, Doğan (Elsevier, 2009-06)The signal performances of YBa2Cu3O7-δ (YBCO) direct current superconducting quantum interference devices (DC-SQUIDs) have been investigated as a function of the thin film structure affected by the growth process. YBCO ... -
The superconducting transition width and illumination wavelength dependence of the response of MgO substrate YBCO transition edge bolometers
Öktem, B.; Bozbey, Ali; Avcı, İlbeyi; Tepe, Mustafa; Abukay, Doğan; Fardmanesh, M. (Elsevier, 2007-07)Dependence of the phase and magnitude of the response of MgO substrate YBa2Cu3O7-δ (YBCO) transition edge bolometers to the near infrared radiation on the superconducting transition width is presented in this work. The ...
