Yazar "Öztürk, Kemal" için listeleme
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Analysis of indentation size effect (ISE) behavior in low-load Vickers microhardness testing of (Sm123)(1-x)(Nd123)(x) superconductor system
Çelik, Şükrü; Öztürk, O.; Coşkun, Emrah; Sarıhan, Mustafa; Asikuzun, Elif; Öztürk, Kemal; Terzioğlu, Cabir (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 ... -
An analysis on the relation between the seed distance and vertical levitation force for the multi-seeded YBCO using the modified advanced frozen image (MAFI) and experimental methods
Öztürk, Kemal; Güner, Sait Barış; Abdioğlu, Murat; Demirci, Mehmet; Çelik, Şükrü; Cansız, Ahmet (Elsevier Science Sa, 2019)The higher magnetic levitation force and related stiffness values are very important for Maglev and magnetic bearing applications. Also, larger superconducting surface area is needed for continuous and larger magnetic ... -
The comparison of levitation and lateral force of bulk and cut-pasted bulk GdBCO samples at different temperatures
Güner, Sait Barış; Abdioğlu, Murat; Öztürk, Kemal; Çelik, Şükrü (Elsevier Science Sa, 2020)In this work, in the first time, we have investigated the levitation and lateral force properties of bulk and cut-pasted bulk GdBCO samples at different temperatures and different cooling heights (CH) to determine the ... -
Comparison of levitation forces of bulk MgB2 superconductors produced by nano boron and carbon-doped nano boron
Düz, I.; Güner, Sait Barış; Erdem, Oğuz; Demir, İsmail; Kapucu, V.; Çelik, Şükrü; Öztürk, Kemal; Hossain, Shahriar; Gencer, Ali G.; Yanmaz, Ekrem (Springer, 2014)MgB2 bulk superconductors were prepared by hot press plus furnace heating method. Two types of boron powders were used, one is amorphous nano boron and the other is C-doped boron. Characteristics of superconductors were ... -
Effect of adding on the critical current density and lateral levitation force of bulk
Savaşkan, Burcu; Koparan, Ezgi Taylan; Güner, Sait Barış; Çelik, Şükrü; Öztürk, Kemal; Yanmaz, Ekrem (Springer/Plenum Publishers, 2015)We fabricated malic acid -added bulks by wet mixing and "Two-step solid state reaction method". the effects of adding malic acid on , behaviour and lateral levitation force features of bulk have been investigated. A ... -
The effect of magnetic field distribution and pole array on the vertical levitation force properties of HTS maglev systems
Öztürk, Kemal; Abdioğlu, Murat; Şahin, Erçin; Çelik, Şükrü; Gedikli, Hasan; Savaşkan, Burcu (Ieee-Inst Electrical Electronics Engineers Inc, 2015)In this paper, the levitation force measurements have been carried out by the magnetic force measurement system under both field-cooling and zero-field-cooling regimes, whereas the magnetic field distribution over the ... -
Effects of initial cooling conditions and measurement heights on the levitation performance of bulk MgB superconductor at different measurement temperatures
Erdem, Osman Ayhan; Öztürk, Kemal; Güner, Sait Barış; Çelik, Şükrü; Yanmaz, Ekrem (Springer/Plenum Publishers, 2014)The levitation properties of MgB prepared by hot press at 200 C and then pellet/closed tube method has been investigated. the vertical and lateral levitation forces ( and on a cylindrical NdFeB permanent magnet (PM) below ... -
Enhanced magnetic levitation and guidance force in MgB2 bulks by synthetic engine oil immersion
Savaşkan, Burcu; Koparan, Ezgi Taylan; Güner, Sait Barış; Öztürk, Kemal; Çelik, Şükrü (Springer, 2019)We have used Synthetic engine oil' as a rich easily accessible carbon source and investigated the effect of engine oil on the microstructure, critical current density (J(c)), vertical levitation force (F-z) and guidance ... -
Improvement of superconducting properties of MgB2 by changing the argon ambient pressure and sintering conditions
Savaşkan, Burcu; Öztürk, Kemal; Çelik, Şükrü; Yanmaz, Ekrem (Institute of Physics Publishing, 2009)We have investigated various characteristic properties depending on sintering conditions of MgB2 samples prepared by the standard solid state reaction method. It is inferred from experimental results that the crystallinity ... -
Investigation of magnetic force properties between different PMGs and multi-seeded YBCO superconductors with different seed distances
Abdioğlu, Murat; Öztürk, Kemal; Güner, Sait Barış; Çelik, Şükrü; Kuüçükömeroğlu, Tayfur (Elsevier, 2019)The magnetic levitation force in vertical direction and guidance force in lateral direction should be increased for enhancing the loading capacity and stability of Maglev systems, respectively. in this study, we have ... -
Investigation on superconducting and magnetic levitation force behaviour of excess Mg doped-bulk MgB2 superconductors
Güner, Sait Barış; Savaşkan, Burcu; Öztürk, Kemal; Çelik, Şükrü; Aksoy, Canan; Karaboğa, Fırat; Koparan, Ezgi Taylan; Yanmaz, Ekrem (Elsevier Sci Ltd, 2019)A series bulk samples of MgB2 + x wt% of Mg (x = 0, 5, 10, 15, 20 and 30) were fabricated by solid state reaction method. the structural and electromagnetic properties of MgB2 samples were studied using X-ray diffraction ... -
Investigation on the levitation force behaviour of malic acid added bulk MgB2 superconductors
Savaşkan, Burcu; Koparan, Ezgi Taylan; Çelik, Şükrü; Öztürk, Kemal; Yanmaz, Ekrem (Elsevier, 2014)The effects of malic acid addition (from 0 to 15 wt% of the total MgB2) on the levitation force properties of bulk MgB2 have been investigated. All samples were prepared from magnesium powder, amorphous boron powder, malic ... -
The investigation on the regional nanoparticle Ag doping into MgTi0.06B2 bulk for improvement the magnetic levitation force and the bulk critical current
Öztürk, Kemal; Dancer, Claire E. J.; Savaşkan, Burcu; Aksoy, Canan; Güner, Sait Barış; Badica, Petre; Aldica, Gheorghe V.; Çelik, Şükrü (Elsevier Science Sa, 2017)Fabrication methods are important way to improve structural and superconducting properties of MgB2 such as critical current, magnetic levitation force (MLF) and magnetic field trapping capability. Although the graded ... -
IR laser line scanning treatments to improve levitation forces in MgTi0.06B2 bulk materials
Öztürk, Kemal; Aksoy, Canan; Angurel, Luis Alberto; Savaşkan, Burcu; Martinez, Elena; Badia-Majos, Antonio; De La Fuente, German F.; Güner, Sait Barış; Dancer, Claire E. J.; Çelik, Şükrü (Elsevier Science Sa, 2019)Infrared (IR) laser-line scanning has been widely used to induce different surface microstructures in a broad range of materials. in this work, this laser configuration was applied on the surface of MgTi0.06B2 bulk samples ... -
Lateral force measurements for (Gd123)(1-x) :(Gd211) (x) superconductors at different temperatures
Güner, Sait Barış; Çelik, Şükrü; Cansız, Ahmet; Öztürk, Kemal (Springer, 2017)The lateral levitation force between melt-textured (Gd123)(1-x) :(Gd211) (x) bulk superconductors for x = 0.0, 0.1, 0.2, 0.3, 0.4, and 0.5 and a permanent magnet is measured at 30, 40, 50, 60, and 77 K under zero-field-cooling ... -
The local structure and magnetic correlations in La(Fei(1-x)Mn(x))AsO system
Hacısalihoğlu, Muammer Yasin; Paris, Eugenio; Simonelli, Lucia; Joseph, Boby; Provino, Alessia; Lamura, Gianrico; Martinelli, Alberto; Manfrinetti, Pietro; Aquilanti, Giuliana; Öztürk, Kemal; Dore, P.; Putti, M.; Saini, Naurang L. (Pergamon-Elsevier Science Ltd, 2019)The local structure of La(Fei(1-x)Mn(x))AsO, showing suppression of long-range magnetic order by Mn-substitution, has been studied. Extended X-ray absorption fine structure (EXAFS) measurements at As K-edge and Fe K-edge ... -
Magnetic levitation force and trapped field properties of multiseeded YBCO with triangular arrangement of seeds
Abdioğlu, Murat; Güner, Sait Barış; Öztürk, Kemal; Yang, Chiaming; Chen, Ingann; Çelik, Şükrü (Wiley, 2021)Although there are studies in literature using different number of seeds with different arrangements, especially line and rectangular, it is seen that there is no detailed study handling the levitation force together with ... -
Magnetic properties of the welded joined TSMG Y123+x wt% Y211 (x=20 and 30) bulk superconductors
Çakır, Banu; Öztürk, Kemal; Güner, Sait Barış; Çelik, Şükrü; Aydıner, Alev (Elsevier, 2019)Although the welding techniques have been used to join for bulk YBCO superconductors with a sintered superconductor, similar technique as a Ag2O added bulk YBCO superconductor fabricated by melt-powder-melt-growth process ... -
Magnetization of Gd diffused YBa2Cu3O7-x superconductor: experiment and theory
İnanır, Fedai; Yıldız, Şebnem; Öztürk, Kemal; Çelebi, Selahattin (Iop Publishing Ltd, 2013)The magnetization of Gd diffused YBa2Cu3O7-x is measured by a vibrating sample magnetometer (VSM) at selected temperatures (5, 25, 50, 77 K). the experimental results for the magnetization are analyzed in the critical state ... -
Trapped magnetic field and levitation force properties of multi-seeded YBCO superconductors with different seed distance
Savaşkan, Burcu; Güner, Sait Barış; Yamamoto, Akiyasu; Öztürk, Kemal (Elsevier Science Sa, 2020)The performance of large grain (RE)BCO superconducting bulks has the significant potential for magnetic-force based applications such as trapped field magnets and magnetic levitation devices. These materials can trap high ...
