Yazar "Başoğlu, Mehmet" için listeleme
-
Comparative study of critical current density, pinning force and levitation force behavior in Yb211 doped-Sm123 bulk superconductors
Özturk, Kemal; Akbulut, Ş.; Kütük, Sezai; Bolat, Süleyman; Çelik, Ş.; Başoğlu, Mehmet (ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND, 2012-04-15)The effect of Yb211 doping on the critical transition temperature (T-c), c-lattice parameter, critical current density (J(c)), volume pinning force (F-p) and the vertical levitation force density properties of MPMG-processed ... -
Comparison of levitation force relative to thickness of disk shaped YBa2Cu3O7-x prepared by MPMG and FQMG processes
Kütük, S.; Bolat, S.; Başoğlu, Mehmet; Öztürk, K. (ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND, 2009-11-20)The precursor YBCO in the stoichiometric ratio of 1:23 were fabricated using the melt-powder-melt-growth (MPMG) technique, and flame-quench-melt-growth (FQMG) technique. The superconducting regions were determined by ... -
Complete flux jumping in nano-structured MgB2 superconductors prepared by mechanical alloying
Yanmaz, E.; Savaşkan, B.; Başoğlu, Mehmet; Taylan Koparan, E.; Dilley, N.R.; Grovenor, C. R. M. (ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND, 2009-07-08)High density nano-crystalline MgB2 bulk superconductors with induced pinning centres were prepared from elemental precursors by a sequence of ball milling, heat treatment, and final pressing. The XRD results revealed the ... -
The Effect of Excess Y2O3 Addition on the Mechanical Properties of Melt-Processed YBCO Superconductor
Aydıner, A.; Çakır, B.; Başoğlu, Mehmet; Yanmaz, E. (SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA, 2010-12)In this study, two kinds of melt-processed YBCO samples with Y2O3 addition were fabricated and their microstructures were defined by XRD analysis and polarized light optical microscopy. The mechanical properties of these ... -
The effect of fabrication method on physical properties of different Y211 and 20% Ag2O added YBCO sample
Duman, Şeyda; Çakır, Bakiye; Başoğlu, Mehmet; Küçükömeroğlu, Tayfur; Aydıner, Alev (Springer, 2023)In this study, it is aimed to investigate the effects of production methods on the physical properties of 20% Ag2O and different ratios of Y211 added YBCO samples. In this context, the samples with Y123 + x % (x = 20, 25, ... -
The effect of sintering in different atmospheres on superconductivity parameters of YBCO
Başoğlu, Mehmet (2017)YBa 2 Cu 3 O 7 (Y123) is a superconductor material discovered in 1987 and its transition temperature is above the liquid nitrogen temperature. It is known that superconductor samples produced by the solid-state reaction ... -
The effect of the Y2O3 buffer layer on the microstructural and physical properties of melt-processed Y358 superconductor
Başoğlu, Mehmet; Çakir, Bakiye; Duman, Şeyd; Aydiner, Alev (Springer, 2023)The Y3Ba5Cu8O18 (Y358) superconductors were produced using the Melt-Powder-Melt-Growth (MPMG) method. In the crystal growth process, Y2O3 powder was used as a substrate in both powder and tablet form. The first sample was ... -
The Effect of Y2O3 Buffer Layer on the Magnetic Properties of Melt-Processed YBCO Superconductor
Aydıner, A.; Çakır, B.; Seki, H.; Başoğlu, Mehmet; Wongsatanawarid, A.; Murakami, M.; Yanmaz, E. (SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA, 2011-07)In this study, two kinds of melt-processed YBCO samples (Y1050-1 and Y1050-2) grown on a buffer layer of Y(2)O(3) addition were fabricated. The compacted powders were located on a crucible with Y(2)O(3) powder freely poured ... -
The Effect of Y2O3 on AC Susceptibility Measurements of MPMG YBCO Superconductor
Çakır, Bakiye; Aydıner, Alev; Başoğlu, Mehmet; Yanmaz, Ekrem (SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA, 2013-04)In this study, two kinds of melt-powder-melt-growth (MPMG) YBCO sample grown on a buffer layer of Y2O3 addition were fabricated. The compacted powders were located on a crucible with Y2O3 powder freely poured and a buffer ... -
Effects of Sintering Temperature on Microstructure and Magnetic Properties of Nd–Fe–B Magnets
Başoğlu, Mehmet; Yanmaz, E. (SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA, 2013-05)The sintered Nd-Fe-B (neodymium-iron-boron) magnet has been used for many applications in various fields such as acoustics, communications, and automation due to its excellent properties including high remanence, high ... -
Fabrication and properties of dense ex situ magnesium diboride bulk material synthesized using spark plasma sintering
Dancer, C.E.J.; Prabhakaran, D.; Başoğlu, Mehmet; Yanmaz, Ekrem; Yan, H.; Reece, M.; Todd, R.I. (IOP PUBLISHING LTD, DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND, 2009-09)High density ex situ magnesium diboride bulks were synthesized from commercial MgB(2) powder using spark plasma sintering under a range of applied uniaxial pressures between 16 and 80 MPa. The microstructure was characterized ... -
Levitation force at different temperatures and superconducting properties of nano-structured MgB2 superconductors
Yanmaz, E.; Öztürk, K.; Dancer, C.E.J.; Başoğlu, Mehmet; Çelik, Ş.; Grovenor, C. R. M. (ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND, 2010-03-04)The levitation and pinning force properties of nanocrystalline MgB2 superconductors prepared by a mechanical alloying technique with varying milling duration have been investigated. Levitation force measurements under ... -
The Magnetic and Structural Properties of SiC-Doped MgB2 Bulks Prepared by the Standard Ceramic Processing
Dilek, T. Melek; Koparan, E. Taylan; Başoğlu, Mehmet; Yanmaz, E. (SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA, 2011-01)According to general formula MgB2-x SiC (x) (x=0,0.05,0.1,0.2), MgB2 and SiC-doped bulk superconductors were prepared by the standard ceramic processing. The mixtures of the corresponding powders were sintered at 750 degrees ... -
Magnetic Characterization of SiC Doped Bulk MgB2 Superconductor
Bumin, D.; Yanmaz, E.; Başoğlu, Mehmet; Gencer, A. (SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA, 2011-01)Flux pinning is a very significant mechanism to improve critical current density in MgB2 for many applications, such as developing the performance of wires and tapes. In this study, we have done a systematic study of SiC ... -
Magnetic Properties of YBCO Single-Crystal Grown on Y2O3 Layer by a Cold Top-Seeding Method
Aydıner, Alev; Çakır, Bakiye; Başoğlu, Mehmet; Seki, Hironori; Wongsatanawarid, A.; Murakami, M.; Yanmaz, Ekrem (SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA, 2012-02)In this work, single-crystal samples 20 mm in diameter were grown by a cold top-seeding method. In order to study the effect of an Y2O3 buffer layer, a compacted precursor was located in a crucible on a buffer layer of ...
