Browsing by Author "Terzioglu, C."
Now showing items 1-20 of 103
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Ac Susceptibility Measurements and Mechanical Performance of Bulk MgB2
Ozturk, O.; Asikuzun, E.; Kaya, S.; Erdem, M.; Safran, S.; Kilic, A.; Terzioglu, C. (Springer, 2015)The effects of Ar ambient pressure (vacuum and 0, 10, and 20 B) and annealing times (0.5 and 1 h) on microstructural, superconducting, and mechanical properties of bulk superconducting MgB2 are investigated. The samples ... -
Analysis of indentation size effect (ISE) behavior in low-load Vickers microhardness testing of (Sm123)(1-x)(Nd123)(x) superconductor system
Celik, S.; Ozturk, O.; Coskun, E.; Sarihan, M.; Asikuzun, E.; Ozturk, K.; Terzioglu, C. (Springer, 2013)Indentation size effect (ISE) for (Sm123)(1-x) (Nd123)(x) superconducting samples which were fabricated by the solid state reaction technique for values of x = 0.00, 0.05, 0.10, 0.20, and 0.30 was investigated by analyzing ... -
Analysis of Indentation Size Effect on Mechanical Properties of Cu-Diffused Bulk MgB2 Superconductor Using Experimental and Different Theoretical Models
Dogruer, M.; Yildirim, G.; Ozturk, O.; Terzioglu, C. (Springer, 2013)This study indicates the change of the electrical, microstructural, physical, mechanical and superconducting properties of Cu-diffused bulk MgB2 superconductors by means of scanning electron microscopy (SEM), X-ray diffraction ... -
Anisotropic nature and scaling of thermally activated dissipation mechanism in Bi-2223 superconducting thin film
Yildirim, G.; Varilci, A.; Terzioglu, C. (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 ... -
Calculation of the diffusion coefficient of Au in Bi-2223 superconductors
Ozturk, O.; Kucukomeroglu, T.; Terzioglu, C. (Iop Publishing Ltd, 2007)Undoped Bi-2223 samples were prepared using a conventional solidstate reaction method. Doping of Au in Bi-2223 was carried out by means of diffusion from an evaporated Au film on pellets. We have investigated the effect ... -
Cation size mismatch effect in (La1-yREy)(1.4)Ca1.6Mn2O7 perovskite manganites
Koc, N. Soylu; Altintas, S. P.; Mahamdioua, N.; Terzioglu, C. (Elsevier Science Sa, 2019)The size variance (sigma(2)) that indicates random disorder of cations distributed over the A or B-site, has significant influence on the basic quantities on perovskite manganites. In this study, we investigate the effect ... -
A characterization study on 2,6-dimethyl-4-nitropyridine N-oxide by density functional theory calculations
Yildirim, G.; Zalaoglu, Y.; Kirilmis, C.; Koca, M.; Terzioglu, C. (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
Dogruer, M.; Karaboga, F.; Yildirim, G.; Terzioglu, C. (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
Zalaoglu, Y.; Bekiroglu, E.; Dogruer, M.; Yildirim, G.; Ozturk, O.; Terzioglu, C. (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
Dogruer, M.; Karaboga, F.; Yildirim, G.; Terzioglu, C.; Ozturk, O. (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 of crack propagation in bulk Bi-2223 superconducting ceramics with Sn-diffusion annealing temperature
Dogruer, M.; Terzioglu, C.; Yildirim, G.; Pakdil, M.; Zalaoglu, Y. (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 ... -
Density functional theory study on the identification of 3-[(2-morpholinoethylimino)methyl]benzene-1,2-diol
Parlak, C.; Akdogan, M.; Yildirim, G.; Karagoz, N.; Budak, E.; Terzioglu, C. (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 ... -
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
Zalaoglu, Y.; Yildirim, G.; Terzioglu, C.; Gorur, O. (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 ... -
Determination of solid solubility level of Ho nanoparticles in Y-123 superconducting matrix and strong Cu-1 site preference of nanoparticles
Saritekin, N. K.; Zalaoglu, Y.; Yildirim, G.; Dogruer, M.; Terzioglu, C.; Varilci, A.; Gorur, O. (Elsevier Science Sa, 2014)This comprehensive study reports the effect of the Ho inclusions on the microstructural, electrical, mechanical and superconducting characteristics of YBa2Cu3O7-delta ceramic superconductors with the aid of standard ... -
Diffusion coefficient, activation energy and the effect of Ag-doping on some physical properties of silver doped Bi1.8Pb0.4Ca2.2Sr2Cu3Ox
Akdogan, M.; Terzioglu, C.; Varilci, A.; Belenli, I. (Elsevier Science Bv, 2010)The aim of the present study is to investigate the effect of diffusion-doped silver on some physical properties of Bi1.8Pb0.4Ca2.2Sr2Cu3Ox superconducting samples and to calculate the diffusion coefficient and the activation ... -
EDXRF measurements on gold diffusion-doped Bi1.8Pb0.35Sr1.9Ca2.1Cu3Oy
Terzioglu, C. (Elsevier Science Bv, 2008)Gold (Au) diffusion in superconducting Bi1.8Pb0.35Sr1.9Ca2.1Cu3Oy was investigated over the temperature range 500-800 degrees C by the energy dispersive X-ray fluorescence (EDXRF) technique. It is found that the Au diffusion ... -
Effect of anionic substitution on the structural and magneto-electrical properties of La-Ca-Mn-O perovskite manganites
Altintas, S. P.; Mahamdioua, N.; Amira, A.; Terzioglu, C. (Elsevier Science Bv, 2014)The role of anion substitution of oxygen by fluorine in La0.7Ca0.3MnO3-delta Fx (x=0.0 and 0.6) system has been investigated by means of X-ray powder diffraction, electrical resistivity and magnetization measurements. The ... -
Effect of annealing temperature on magnetoresistivity, activation energy, irreversibility and upper critical field of the Cu-diffused MgB2 bulk superconductors
Dogruer, M.; Yildirim, G.; Terzioglu, C. (Springer, 2013)This study manifests the change of the pinning mechanism, superconducting and physical properties of Cu-diffused MgB2 superconductors prepared at different annealing temperature from 650 to 850 degrees C by means of the ... -
Effect of annealing temperature on some physical properties of MgB2 by using the Hall probe ac-susceptibility method
Varilci, A.; Yegen, D.; Tassi, M.; Stamopoulos, D.; Terzioglu, C. (Elsevier Science Bv, 2009)A commercially available powder of MgB2 is used as starting material for the examination of the influence of the annealing temperature on the properties of this intermediate-T-c superconductor. We performed scanning electron ... -
The effect of Au diffusion on some physical properties of Bi1.8Pb0.35Sr1.9Ca2.1Cu3Oy superconductors
Terzioglu, C.; Ozturk, O.; Belenli, I. (Elsevier Science Sa, 2009)We have investigated the effect of the gold diffusion on the crystal structure and superconducting properties of Bi-2223 superconducting samples employing X-ray diffraction (XRD), scanning electron microscopy (SEM), critical ...
