Yazar "Yanmaz, E." için listeleme
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Activation energy U(H) and pinning behavior of Yb-impurity-diffused YBa 2Cu 3O 7-x
Öztürk, K.; Çelik, Ş.; Yanmaz, E.; Savaşkan, B. (Wiley, 2007)Superconducting Y123 samples were prepared by the solid-state reaction (SSR) method. To get a layer of Yb (thickness ?4 ?m) on the surface of one side of the sample an ultrahigh-vacuum electron-beam deposition system was ... -
Ag diffusion in ZnS thin films prepared by spray pyrolysis
Bacaksız, Emin; Görür, O.; Tomakin, Murat; Yanmaz, E.; Altunbaş, M. (Elsevier, 2007)ZnS thin films were deposited by spray pyrolysis method on glass substrates. Diffusion of Ag in ZnS thin films was performed in the temperature range 80-400 °C under a nitrogen atmosphere. The diffusion of Ag is determined ... -
Anomalous ferromagnetic behaviour of Y2O3 and CuO nanoparticles in YBa2Cu3Oy superconductor
Basoğlu, M.; Öztürk, K.; Çelik, Şükrü; Grovenor, M.; Yanmaz, E. (Institute of Physics Publishing, 2009)Anomalous ferromagnetic behaviour of the Y2O3 and CuO components in YBa2Cu3Oy (Y123) was observed after severe reduction of particle size. The particle size reduction was performed in following way: Y2O3, BaCO3 and CuO ... -
Dependency of c-lattice parameter, activation energy and its magnetic power constant on x in Y1-xYbx/2Gdx/2Ba2Cu3O7-y superconductors
Çelik, Şükrü; Öztürk, K.; Yanmaz, E. (Elsevier, 2008)To investigate the effect of x on c-lattice parameter, the activation energy, and the magnetic power constant of activation energy, the nominal composition of Y1-xYbx/2Gdx/2Ba2Cu3O7-y superconducting samples for x = 0.0, ... -
Effects of x in Yb1-xGdxBa2Cu3O7-y samples on c-lattice parameter, activation energy and its magnetic power constant
Çelik, Şükrü; Öztürk, K.; Yanmaz, E. (Elsevier, 2008)The Yb1-xGdxBa2Cu3O7-y superconducting samples (x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0) which were prepared by solid-state reaction technique were studied to investigate the effect of x on c-lattice parameter, the activation ... -
Gadolinium diffusion-doping for enhancing activation energy in superconducting YBa2Cu3O7-x
Öztürk, K.; Çelik, Şükrü; Yanmaz, E. (Elsevier, 2008)The resistance transitions of Gd-diffused polycrystalline Y123 samples have been measured as a function of temperature and magnetic field. It is deduced from experimental results that the activation energy increases when ... -
Investigation of effect of x in Yb1-xGdxBa 2Cu3O7-y superconducting structures on upper critical magnetic field and coherence length
Çelik, Şükrü; Öztürk, K.; Yanmaz, E. (Institute of Physics Publishing, 2009)The resistivity measurements of the Yb1-xGdxBa 2Cu3O7-y superconducting samples prepared by using the solid-state reaction technique for x=0.0, 0.2, 0.4, 0.6, 0.8 and 1.0 were performed in QD-PPMS system under different ... -
Investigation of some superconducting properties of ytterbium diffusion-doped YBa2Cu3O7-x superconductors
Öztürk, K.; Çelik, Şükrü; Çevik, U.; Yanmaz, E. (Elsevier, 2008)The effect of Yb diffusion on structural evolution and superconducting properties of YBa2Cu307-x (Y123) prepared in the bulk polycrystalline form were studied. The ytterbium (Yb) diffusion in superconducting Y123 ceramic ... -
Investigation of the dependency of the upper critical magnetic field on the content x in Y1-xYbx/2Gdx/2Ba2Cu3O7-y superconducting structures
Çelik, Şükrü; Öztürk, K.; Çevik, Uğur; Yanmaz, E. (Elsevier, 2008)The Y1-xYbx/2Gdx/2Ba2Cu3O7-y superconducting samples for x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0 were prepared by using the solid-state reaction technique. Resistivity measurements of the samples were performed in QD-PPMS ... -
Levitation force at different temperatures and superconducting properties of nano-structured MgB2 superconductors
Yanmaz, E.; Öztürk, K.; Dancer, C.E.J.; Başoğlu, M.; Çelik, Şükrü; Grovenor, C.R.M. (Elsevier, 2010)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 ...
