Dependence of the Structural, Electrical and Magnetic Properties of YBa2Cu3O7−δ Bulk Superconductor on the Ag Doping

Yıldız, Aylin; Kocabaş, Kemal; Akyüz, G. Bilgeç

doi:10.1007/s10948-012-1482-8

Cited by 22 publications

(8 citation statements)

References 22 publications

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“…The magnetization as a function of temperature while in a field of 100 G is shown in figure 7, and the superconducting transition temperature, T c , was determined by extrapolating the data in the superconducting state to the temperature where the weak, nearly temperature-independent normal state would be achieved, see figure 7 inset. The resulting T c value of 91.7 K is similar to ones reported in the literature [30,37,38], and no additional phase transitions were observed at temperatures below T c .…”

Section: Resultssupporting

confidence: 87%

Electrospinning of superconducting YBCO nanowires

Duarte

Rudawski

Quintero

et al. 2014

Supercond. Sci. Technol.

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YBa2Cu3O7−δ (YBCO) nanowires with critical transition temperature Tc = 91.7 K were synthesized by an electrospinning process with the use of sol–gel precursors. A homogeneous polymeric solution containing Y, Ba, and Cu acetates was electrospun, resulting in collections of randomly oriented nanowires as well as bundles of aligned nanowires. Fully crystallized YBCO nanowires were obtained after calcination at temperatures as low as 820 °C. The morphology, microstructure, and crystal structure were investigated, and the diameters of the polycrystalline nanowires varied between 120 and 550 nm depending on the viscosity of the precursors. Thinner individual wires, with diameters in the 50–80 nm range, were synthesized with a single grain structure across the entire wire cross-section.

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Section: Resultssupporting

confidence: 87%

Electrospinning of superconducting YBCO nanowires

Duarte

Rudawski

Quintero

et al. 2014

Supercond. Sci. Technol.

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“…However, as the temperature decreases, the probability of thermal activation of vortices also decreases and the contribution from this effect gradually decreases. Similar assumptions were made by Aylin Yildiz et al [ 21 ] and Pinto R. et al [ 31 ] for bulk materials and for films on single crystal substrates.…”

Section: Resultsmentioning

confidence: 58%

“…It is currently known that doping silver into YBa 2 Cu 3 O 6+x (YBCO) improves the growth properties of the films [ 13 ] and enhances the incorporation of oxygen [ 17 , 18 ], which, in turn, can lead to improved transport, mechanical, and even, in some cases, superconducting properties [ 18 , 19 , 20 ]. In addition, silver has a beneficial influence on the current transport across grain boundaries [ 14 , 21 , 22 ], which is of considerable interest for metal-based templates due to their granular structure.…”

Section: Introductionmentioning

confidence: 99%

Effect of Silver Doping on the Superconducting and Structural Properties of YBCO Films Grown by PLD on Different Templates

et al. 2022

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We report the local structural and superconducting properties of undoped and Ag-doped YBa2Cu3O6+x (YBCO) films with a thickness of up to 1 µm prepared by pulsed laser deposition on SrTiO3 (STO) single crystals and on ion-beam-assisted deposition (IBAD) and rolling-assisted biaxially textured substrate (RABiTS)-based metal templates. X-ray diffraction demonstrates the high crystalline quality of the films on both single crystalline substrates and metal-based templates, respectively. Although there was only a slight decrease in Tc of up to 1.5 K for the Ag-doped YBCO films on all substrates, we found significant changes in their transport characteristics. The effect of the silver doping mainly depended on the concentration of silver, the type of substrate, and the temperature and magnetic field. In general, the greatest improvement in Jc over a wide range of magnetic fields and temperatures was observed for the 5%Ag-doped YBCO films on STO substrates, showing a significant increase compared to undoped films. Furthermore, a slight Jc improvement was observed for the 2%Ag-doped YBCO films on the RABiTS templates at temperatures below 65 K, whereas Jc decreased for the Ag-doped films on IBAD-MgO-based templates compared to undoped YBCO films. Using detailed electron microscopy studies, small changes in the local microstructure of the Ag-doped YBCO films were revealed; however, no clear correlation was found with the transport properties of the films.

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“…The effect of impurity substitutions on the transport, magnetic, and superconducting properties of High-Tc superconductors may provide clues to understanding some of the unusual normal-state and superconducting properties of these materials. The interest in doping has focused on Ag due to its good results obtained in improving the performance of YBCO [4][5]. YBa2Cu3O7-δ is an attractive material for investigation due to their varying critical transition temperature with oxygen content and strong flux pinning capability in high magnetic fields.…”

Section: Introductionmentioning

confidence: 99%

“…Fig 5. The plot of Jc as a function of magnetic field for a the pure Y123 and b the Nb-doped x = 0.01 samples.…”

mentioning

confidence: 99%

The effect of partial Nb doping on magnetic and electrical behavior of Y-123 superconductors with Nano CuO

2022

ijpr

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We have investigated the effect of Niobium and Nano CuO (40 nm) dopingY1-xNbxBa2Cu3O7-∂ compounds with 0.00 ≤ x ≤ 0.05 wt. %, prepared by the conventional solid-state method by means of XRD, SEM, R(T) and magnetic loops (M H) measurements. The critical current densities, Jc as a function of temperature have been calculated using the critical state model from the hysteresis loops up to 1 kG at the temperature range of 10-60 K. Magnetic flux pinning, Fp of samples was calculated by using Lorentz force. The temperature dependence of the electrical resistivity measurement curves indicated that the sample with x=0.01 wt.% has a high transition temperature, Tc. XRD analysis shows a shorter c axis lattice parameter and higher orthoromthcity than the pure Y-123 and other Nb-doped samples. It was also found from Jc and Fp measurement, that the 0.01 wt.% Nb substation for the Y on YBCO superconductor improves the Jc and Fp.

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Dependence of the Structural, Electrical and Magnetic Properties of YBa2Cu3O7−δ Bulk Superconductor on the Ag Doping

Cited by 22 publications

References 22 publications

Electrospinning of superconducting YBCO nanowires

Electrospinning of superconducting YBCO nanowires

Effect of Silver Doping on the Superconducting and Structural Properties of YBCO Films Grown by PLD on Different Templates

The effect of partial Nb doping on magnetic and electrical behavior of Y-123 superconductors with Nano CuO

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