AC Susceptibility Study of Superconducting YBa 2 Cu 3 O 7 :Ag x Bulk Composites ( x =0.0–0.20): The Role of Intra and Intergranular Coupling
TLDR
In this paper, the effect of silver addition on superconducting performance of bulk YBCO (YBa2Cu3O7) superconductor was investigated using X-ray diffraction data.Abstract:
We report the effect of silver addition on superconducting performance of bulk YBCO (YBa2Cu3O7) superconductor. All the studied samples are prepared by conventional solid-state reaction method. Rietveld fitted X-ray diffraction data confirmed the single phase formation for all the studied samples. Detailed AC susceptibility measurements as a function of driven AC amplitude (1 Oe–17 Oe) of these samples revealed the enhancement of grains coupling with increasing Ag content in YBCO + Ag
x
composite system. 10 wt% Ag added YBCO superconductors exhibited the optimal intergranular coupling. The Scanning Electron Microscopy (SEM) observations indicate an increase in the grains connectivity in terms of narrow grain boundaries for doped samples. The average grain size is found to increase with Ag doping. It is concluded that limited addition of Ag in bulk YBCO superconductor significantly improves the grains coupling and, as a result, the optimal superconducting performance. YBCO + Ag composites could prove to be potential candidates for bulk superconducting applications of the studied high-T
c
system.read more
Citations
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Excess conductivity and AC susceptibility studies of Y-123 superconductor added with TiO2 nano-wires
TL;DR: In this article, the impact of nano-wires (NWs) used as additives on intergranular and intra-granular coupling of YBa2Cu3O7-d (noted YBCO or Y-123) superconductor was studied.
Journal ArticleDOI
Role of Nd2O3 nanoparticles addition on microstructural and superconducting properties of YBa2Cu3O7-δ ceramics
Aima Ramli,Aima Ramli,Abdul Halim Shaari,Hussein Baqiah,Chen Soo Kean,Mohd Mustafa Awang Kechik,Zainal Abidin Talib +6 more
TL;DR: In this article, the effects of nano-Nd2O3 nanoparticles addition on microstructure, transport and AC susceptibility properties of YBa2Cu3O7-δ (Y123) superconductors were systematically investigated using X-ray diffraction (XRD), scanning electron micrograph (SEM), four point probe measurement and AC spectrometer.
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High field magneto-transport study of YBa2Cu3O7:Agx (x = 0.00–0.20)
TL;DR: In this paper, it was shown that inclusion of Ag significantly improves the superconducting performance of YBCO:Ag composites, in particular under applied magnetic field, and the resistive broadening is explained on the basis of changed intergranular coupling and thermally activated flux flow (TAFF).
Journal ArticleDOI
Superconductivity of Y2O3 and BaZrO3 nanoparticles co-added YBa2Cu3O7−δ bulks prepared using co-precipitation method
Nurhidayah Mohd Hapipi,Soo Kien Chen,Abdul Halim Shaari,Mohd Mustafa Awang Kechik,Kar Ban Tan,Kean Pah Lim +5 more
TL;DR: In this paper, polycrystalline samples of nominal composition YBa2Cu3O7−δ with co-addition of 5.0 and BZO nanoparticles were prepared using co-precipitation (COP) method.
Journal ArticleDOI
Magneto transport study of YBCO: Ag composites
TL;DR: In this paper, the effect of Ag addition on the magnetoresistance and allied properties of YBCO was studied and the authors found that the zero resistance temperature (T C 0 ) shift is narrowed down by the addition of Ag as magnetic field (H ) is increased from 0 to 13 T.
References
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Superconductivity at 93 K in a new mixed-phase Y-Ba-Cu-O compound system at ambient pressure
Maw-Kuen Wu,J. R. Ashburn,C. J. Torng,Pei-Herng Hor,R. L. Meng,Li Gao,Z. J. Huang,Yongmei Wang,Ching-Wu Chu +8 more
TL;DR: A stable and reproducible superconductivity transition between 80 and 93 K has been unambiguously observed both resistively and magnetically in a new Y-Ba-Cu-O compound system at ambient pressure.
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High current density in bulk YBa2Cu3Ox superconductor
TL;DR: A liquid phase processing method for the fabrication of bulk YBa2Cu3Ox superconductors with large current carrying capacity has been developed in this paper, where a cooling rate of 1'°C/h in this temperature range has yielded a microstructure with long plate type, thick grains oriented over a wide area.
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Magnetic susceptibility of sintered and powdered Y-Ba-Cu-O
TL;DR: The real and imaginary parts of ac susceptibility of a sintered Y1Ba2Cu3O7−δ superconductor were measured before and after powdering as discussed by the authors.
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Superconducting and mechanical properties of YBCO-Ag composite superconductors
TL;DR: In this paper, measurements of electrical properties and X-ray structural analysis were made for sintered composite materials prepared by mixing the powders of the ceramic superconductor YBa2Cu3O7−x (YBCO) and the pure metal element M with with Ni, Cu and Ag at 50 vol% proportions.
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Critical current enhancement in YBCO–Ag melt-textured composites: influence of microcrack density
TL;DR: In this article, a strong increase of the critical current density of YBa 2 Cu 3 O 7 (YBCO) melt-textured composites has been observed by adding Ag 2 O particles in the precursor mixture while the concentration of Y 2 BaCuO 5 (Y211) precipitates remains constant.