Browsing by Author "Yıldırım, Gürcan"
Now showing items 1-20 of 123
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Ab initio Hartree-Fock and density functional theory study on characterization of 3-(5-methylthiazol-2-yldiazenyl)-2-phenyl-1H-indole
Büyükuslu, Halim; Akdoğan, Mustafa; Yıldırım, Gürcan; Parlak, Cihan (Pergamon-Elsevier Science Ltd, 2010)The optimized molecular structures, vibrational frequencies, corresponding vibrational assignments, thermodynamic properties, UV-vis spectra and atomic charges of 3-(5-methylthiazol-2-yldiazeny1)-2-phenyl-1H-indole molecule ... -
Anisotropic nature and scaling of thermally activated dissipation mechanism in Bi-2223 superconducting thin film
Yıldırım, Gürcan; Varilci, Ahmet; Terzioğlu, Cabir (Elsevier Science Sa, 2013)This study deals with the resistive transition of the c-axis oriented Bi-2223 thin film produced on the single crystal MgO (100) substrate using direct current (DC) magnetron reactive sputtering technique at 100 watt in ... -
Beginning point of metal to insulator transition for Bi-2223 superconducting matrix doped with Eu nanoparticles
Yıldırım, Gürcan (Elsevier Science Sa, 2013)This comprehensive study examines the change of the microstructural, electrical and superconducting properties of the Eu doped Bi1.8Pb0.4EuxSr2Ca2.2Cu3.0Oy ceramic cuprates (with x <= 0.7) produced by the conventional solid ... -
Breaking point of the harmony between Gd diffused Bi-2223 slabs with diffusion annealing temperature
Aydin, H.; Babanlı, Arif; Altıntaş, Sevgi Polat; Aşıkuzun, Elif; Soylu, Nevin; Öztürk, Özgür; Doğruer, Musa; Terzioğlu, Cabir; Yıldırım, Gürcan (Springer, 2013)This comprehensive study reports the role of annealing temperature on the microstructural, superconducting and mechanical characteristics of the Gd diffused Bi-2223 superconducting ceramics produced by the conventional ... -
Calculation of proton total reaction cross sections for some target nuclei in incident energy range of 10-600 MeV
Büyükuslu, Halim; Kaplan, Abdullah; Aydın, A.; Tel, Eyyüp; Yıldırım, Gürcan (Maik Nauka/Interperiodica/Springer, 2010)In this study, proton total reaction cross sections have been investigated for some isotopes such as (12)C, (27)Al, (9)Be, (16)O, (181)Ta, (197)Au, (6)Li, and (14)N by a proton beam up to 600 MeV. Calculation of the proton ... -
Change in transition balance between durable tetragonal phase and stress-induced phase of cobalt surface-layered in Bi-2212 materials by semi-empirical mechanical models
Erdem, Ümit; Yıldırım, Gürcan; Türköz, Mustafa Burak; Ülgen, Asaf Tolga; Mercan, Ali (IOP Publishing Ltd, 2023)This study has indicated the positive effect of sintering temperature on the mechanical durability, strength, critical stress, deformation degrees, durable tetragonal phase, failure and fracture by fatigue, and mechanical ... -
Change of formation velocity of Bi-2212 superconducting phase with annealing ambient
Öztürk, Özgür; Yıldırım, Gürcan; Aşıkuzun, Elif; Coşkunyürek, M.; Yılmazlar, M.; Kılıç, A. (Springer, 2013)This exhaustive study enables the researchers to recognize the role of the annealing conditions (temperature and time) on the microstructural, mechanical, electrical and superconducting properties of the Bi-2212 superconducting ... -
Change of mechanical performance and characterization with replacement of Ca by Gd nanoparticles in Bi-2212 system and suppression of durable tetragonal phase by Gd
Akkurt, Bahadır; Yıldırım, Gürcan (Springer, 2016)In this study, we concentrate on crucial evaluations of mechanical performances belonging to Bi2.1Sr2.0Ca1.1-xGdxCu2.0Oy superconducting ceramics with the partial replacement within the molar ratio change 0 ae<currency> x ... -
A characterization study on 2,6-dimethyl-4-nitropyridine N-oxide by density functional theory calculations
Yıldırım, Gürcan; Zalaoğlu, Y.; Kırılmış, Cumhur; Koca, Murat; Terzioğlu, Cabir (Pergamon-Elsevier Science Ltd, 2011)This study deals with the identification of a title compound, 2,6-dimethyl-4-nitropyridine N-oxide by means of theoretical calculations. The optimized molecular structures, vibrational frequencies, corresponding vibrational ... -
Comparative study on indentation size effect, indentation cracks and superconducting properties of undoped and MgB2 doped Bi-2223 ceramics
Doğruer, Musa; Karaboğa, Fırat; Yıldırım, Gürcan; Terzioğlu, Cabir (Springer, 2013)This study examines the evaluation mechanism of MgB2 doped Bi1.8Pb0.4Sr2(MgB2)(x)Ca2.2Cu3.0Oy (0 <= x <= 1.0) superconducting ceramics prepared by conventional solid-state reaction method via dc resistivity, X-ray diffraction ... -
Comparative study on mechanical properties of undoped and Ce-doped Bi-2212 superconductors
Zalaoğlu, Yusuf; Bekiroğlu, Erdal; Doğruer, Musa; Yıldırım, Gürcan; Öztürk, Özgür; Terzioğlu, Cabir (Springer, 2013)This study discusses the mechanical performances of Bi1.8Sr2.0CexCa1.1Cu2.1Oy ceramics with x = 0, 0.001, 0.003, 0.005, 0.01, 0.03, 0.05 and 0.1 by way of Vickers microhardness (H-v) measurements performed at different ... -
A comprehensive study on mechanical properties of Bi1.8Pb0.4Sr2MnxCa2.2Cu3.0Oy superconductors
Doğruer, Musa; Karaboğa, Fırat; Yıldırım, Gürcan; Terzioğlu, Cabir; Öztürk, Özgür (Springer, 2013)This study manifests the crucial change in the mechanical performances of Bi1.8Pb0.4Sr2MnxCa2.2Cu3.0Oy superconductor samples (x = 0, 0.03, 0.06, 0.15, 0.3 and 0.6) prepared by conventional solid-state reaction method by ... -
Decrement in metastability with Zr nanoparticles inserted in Bi-2223 superconducting system and working principle of hybridization mechanism
Sarıtekin, Namık Kemal; Pakdil, Murat; Yıldırım, Gürcan; Öz, Muhammed; Turğay, Tahsin (Springer, 2016)This exhaustive study experimentally deals with the role of Zr foreign impurities on the electrical, superconducting and flux pinning properties of the bulk Bi-2223 superconducting compounds by the typical experimental ... -
Decrement of crack propagation in bulk Bi-2223 superconducting ceramics with Sn-diffusion annealing temperature
Doğruer, Musa; Terzioğlu, Cabir; Yıldırım, Gürcan; Pakdil, Murat; Zalaoğlu, Yusuf (Springer, 2015)The effect of Sn diffusion at different annealing temperature on the Bi1.8Pb0.4Sr2.0Ca2.1Cu3.0Oy superconducting materials is performed with the aid of Vickers microhardness (H-v) measurements at different applied loads ... -
Degeneration of mechanical characteristics and performances with Zr nanoparticles inserted in Bi-2223 superconducting matrix and increment in dislocation movement and cracks propagation
Akdemir, Ertuğrul; Pakdil, Murat; Bilge, Habibullah; Kahraman, Mehmet Fatih; Bekiroğlu, Erdal; Yıldırım, Gürcan; Öz, Muhammed (Springer, 2016)This study explains the role of Zr concentration level on mechanical characteristics and performance belonging to the bulk Bi-2223 superconducting materials by means of standard Vickers microhardness (H-v) measurements at ... -
Degradation in fundamental characteristic features of Bi-2212 superconducting ceramic material with Sr/Ti partial substitution
Ülgen, Asaf Tolga; Yıldırım, Gürcan (Springer, 2019)The present work investigates the vital differentiations in some basic characteristic properties including the crystallinity quality, flux pinning mechanism, superconducting, dc electrical features, grain boundary coupling ... -
Density functional theory study on the identification of 3-[(2-morpholinoethylimino)methyl]benzene-1,2-diol
Parlak, Cihan; Akdoğan, Mustafa; Yıldırım, Gürcan; Karagöz, Nurettin; Budak, Erhan; Terzioğlu, Cabir (Pergamon-Elsevier Science Ltd, 2011)This study deals with the identification of a title compound, 3-[(2-morpholinoethylimino)methyl]benzene-1,2-diol by means of quantum chemical calculations. The optimized molecular structures, vibrational frequencies and ... -
Density Functional Theory Study on the Identification of Pd(Me-Xanthate)(2)
Koca, Murat; Yıldırım, Gürcan; Kırılmış, C.; Karaboğa, Fırat (Springer Heidelberg, 2012)This study dealing with the identification of a title compound, Pd(Me-Xanthate)(2), by means of quantum chemical calculations is composed of two parts: experiment and theoretical. For the first part, the molecule was ... -
Detailed analysis on electrical conduction transition from 2D variable range hopping to phonon-assisted 3D VRH mechanism belonging to Bi-site La substituted Bi-2212 system
Zalaoğlu, Yusuf; Yıldırım, Gürcan; Terzioğlu, Cabir; Görür, Osman (Elsevier Science Sa, 2015)The main scope of this comprehensive study is to determine the critical dopant level of metal to insulator transition (MIT) for Bi-site La substituted Bi-2212 superconducting ceramics by means of bulk density, Xray diffraction ... -
A detailed research for determination of Bi/Ga partial substitution effect in Bi-2212 superconducting matrix on crucial characteristic features
Güner, Sait Barış; Zalaoğlu, Yusuf; Turğay, Tahsin; Özyurt, Ömer; Ülgen, Asaf Tolga; Doğruer, Musa; Yıldırım, Gürcan (Elsevier Science Sa, 2019)This multidisciplinary study paves way to investigate the crucial of fundamental characteristic properties including the bulk density, electrical, superconducting, flux pinning mechanism, crystal structure quality and ...
