Yazar "Yanmaz, Ekrem" için listeleme
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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 ... -
Effect of substitution and heat treatment route on polycrystalline FeSe0.5Te0.5 superconductors
Hacısalihoğlu, Muammer Yasin; Yanmaz, Ekrem (Springer, 2013)The effect of atomic substitution of Te in iron based superconductors FeSe (1: 1 type), which exhibits the simplest crystal structure among the iron-based superconductors, has been investigated in terms of structural, ... -
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 ... -
Enhancing magnetic levitation and guidance force and weight efficiency of high-temperature superconducting maglev systems by using sliced bulk YBCO
Abdioğlu, Murat; Öztürk, U. Kemal; Güner, Sait Barış; Öztürk, Mehmet; Mollahasanoğlu, Hakkı; Yanmaz, Ekrem (Wiley, 2023)We aimed to enhance the magnetic force efficiency of Maglev systems without increasing total weight. For this aim, we divided YBCO bulks into three slices horizontally to utilize the YBCO-permanent magnetic guideway (PMG) ... -
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 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 nanoscale structure and unoccupied valence electronic states in FeSe1-xTex chalcogenides probed by X-ray absorption measurements
Hacısalihoğlu, Muammer Yasin; Paris, Eugenio; Joseph, Boby; Yanmaz, Ekrem; Saini, Naurang L. (Royal Soc Chemistry, 2015)We have studied the nanoscale structure and unoccupied electronic states in FeSe1-xTex by a combined analysis of Se K, Te L-1 and Fe K-edges X-ray absorption measurements. Extended X-ray absorption fine structure (EXAFS) ... -
The size effect on the magnetic levitation force of MgB2 bulk superconductors
Savaşkan, Burcu; Koparan, Ezgi Taylan; Güner, Sait Barış; Çelik, Şükrü; Yanmaz, Ekrem (Elsevier Sci Ltd, 2016)In this study, the size effect on the magnetic levitation performance of disk-shaped MgB2 bulk superconductors and permanent magnets was investigated. MgB2 samples with varying diameters of 13 mm, 15 mm and 18 mm, each of ...
