Enhanced Transport Critical Current Density of NiO Nano Particles Added YBCO Superconductors

The effects of NiO nanoparticles addition in YBa2Cu3O7-δ (YBCO) superconductors had been investigated. YBCO superconductor powders were prepared by using high purity oxide powders via solid state reaction method. 0.01 0.05 wt.% of NiO nanoparticles were added into YBCO. The critical temperature (Tc) and transport critical current density (Jc) were determined by using four point probe method. The lattice parameters and morphology of the samples were characterized by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM), respectively. Tc of YBCO increased from 84 K to 87 K with 0.02 wt.% of NiO nanoparticles addition. The addition on NiO nanoparticles have significantly enhanced transport critical current density of YBCO by acting as flux pinning centers. YBCO with 0.03 wt.% of NiO nanoparticles performed the highest Jcup to 1265 mA/cm2 among the NiO-added samples. However, excessive addition of NiO nanoparticles in YBCO caused degradation in Tc and Jc.

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Phase Formation and Transport Critical Current Density of Tl2Ba2CaCu2O8 Superconductor with Nano Bi2O3

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.268.320 ◽

2017 ◽

Vol 268 ◽

pp. 320-324

Author(s):

I.M.O. Dabaa ◽

Roslan Abd-Shukor

Keyword(s):

Transition Temperature ◽

Critical Current Density ◽

Critical Current ◽

Current Density ◽

Liquid Nitrogen Temperature ◽

Solid State Reaction Method ◽

Mixed Phase ◽

Transport Critical Current Density ◽

High Porosity ◽

Grain Size And Orientation

The effect of nanosized Bi2O3 (150 nm) on the formation of the Tl2Ba2CaCu2O8 (Tl-2212) phase, transition temperature and transport critical current density has been studied. Samples with nominal starting composition Tl2Ba2CaCu2O8(Bi2O3)x (x = 0 to 0.5 wt. %) were prepared using the solid state reaction method. Most samples except x = 0.5 showed a mixed phase consisting of the Tl2Ba2CaCu2O8 and Tl2Ba2Ca2Cu3O10 (Tl-2223). The x = 0.5 sample showed a single Tl-2212 phase. However, the transition temperature, Tc of the x = 0.5 was very much suppressed (Tonset = 106 K, Tc zero 88 K). All samples showed random grain size and orientation, with partial melting and high porosity. The x = 0.1 mixed phase sample showed the highest transport critical current density of 285 mA/cm2 at liquid nitrogen temperature (78 K).

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Effects of Gamma Ray Irradiation on High Temperature Superconductors YBCO with Nanoparticles Fe3O4 Addition

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1107.595 ◽

2015 ◽

Vol 1107 ◽

pp. 595-600 ◽

Cited By ~ 1

Author(s):

Kong Wei ◽

Siti Nurdalila Abd-Ghani ◽

Hon Kah Wye ◽

Kong Ing ◽

Roslan Abd-Shukor

Keyword(s):

High Temperature ◽

Gamma Ray ◽

High Temperature Superconductors ◽

Solid State Reaction Method ◽

Nano Particles ◽

Transport Critical Current Density ◽

Ybco Superconductor ◽

Oxide Powders ◽

Before And After ◽

Gamma Ray Irradiation

<p>The effects of gamma ray irradiation on high temperature superconductors YBa2Cu3O7-δ with nano particles Fe3O4 (20-30 nm) addition were investigated. YBCO superconductor powders were prepared by using high purity oxide powders via solid state reaction method. 0.01 – 0.05 wt.% of nano particles were added into YBCO. Samples were irradiated with 100 kGy gamma ray. The critical temperature (Tc) and transport critical current density (Jc) were determined by using four point probe method. The lattice parameters and morphology of the samples were characterized by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM), respectively. The results before and after gamma ray irradiation were compared. All of the samples showed increased Tc-zero after 100 kGy gamma ray irradiation. However, the Jcwas degraded after gamma ray irradiation. There is no significant variation found in the XRD patterns. The porosity of the samples was increased by the gamma ray irradiation. It can be concluded that gamma ray irradiation has enhanced the superconducting properties but degraded the transport properties.</p>

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The Effects of Nanoparticle Addition in Bi-2212 Superconductors

Jurnal Teknologi ◽

10.11113/jt.v69.3106 ◽

2014 ◽

Vol 69 (2) ◽

Cited By ~ 1

Author(s):

M. A. Suazlina ◽

S. Y. S. Yusainee ◽

H. Azhan ◽

R. Abd-Shukor ◽

R. M. Mustaqim

Keyword(s):

Critical Current Density ◽

Critical Current ◽

Current Density ◽

Density Measurement ◽

Solid State Reaction Method ◽

Crystallographic Structure ◽

Superconducting Properties ◽

X Ray Diffraction ◽

Oxide Powders ◽

Critical Current Density Jc

The effect of Y2O3 nanoparticle addition on the superconducting properties of Bi1.6Pb0.4Sr 2CaCu 2Oy have been investigated. The samples were prepared using high purity oxide powders via solid state reaction method. Y2O3 nanoparticle with 0.0-1.0 wt. % was systematically added to the well balanced Bi1.6Pb0.4 Sr2CaCu2Oy before sinter in order to trace the existense of nanoparticle addition in the system. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and critical current density, Jc. The current density measurement was done via four-point probe method under zero magnetic fields. The critical current density, Jc and superconductivity transition temperature, Tc for sample with addition of Y2O3 nanoparticle were found to be higher than the pure sample. The optimal addition of Y2O3 nanoparticle to the sample Bi-2212 system was found at 0.7 wt. %. The crystallographic structure of all samples was evidenced to be orthorhombic where a ≠ b ≠ c. Changes in superconducting properties of Y2O3 nanoparticle added Bi-2212 system were discussed.

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Effect of Nano-Sized Nickel Ferrite Addition on Superconducting Properties of (Tl0.85Cr0.15)Sr2CaCu2O7-δ Superconductors

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.290.227 ◽

2019 ◽

Vol 290 ◽

pp. 227-232

Author(s):

Wei Kong ◽

Ing Kong ◽

Nur Akasyah Jaafar ◽

M. Aizat Kamarudin ◽

Nurul Raihan Suib ◽

...

Keyword(s):

Transition Temperature ◽

Critical Current Density ◽

Critical Current ◽

Current Density ◽

Nickel Ferrite ◽

Ac Susceptibility ◽

High Temperature Superconductors ◽

Diffraction Method ◽

Solid State Reaction Method ◽

Transport Critical Current Density

The effect of nanosized nickel ferrite (NiFe2O4) addition on (Tl0.85Cr0.15)Sr2CaCu2O7-δ superconductors has been investigated. (Tl0.85Cr0.15)Sr2CaCu2O7-δ high temperature superconductors was prepared via solid-state reaction method using high purity oxide powders. Nanosized NiFe2O4 was added to the compound at composition x = 0 - 0.003 wt.%. Samples were studied using scanning electron microscopy (SEM), X-ray diffraction method (XRD), electrical resistance versus temperature, transport critical current density Jc and AC susceptibility measurements. SEM micrographs showed close-packed microstructure with low porosity. XRD patterns showed a dominant phase of Tl-1212 with a minor phase of Tl-1201 for all samples. All of the samples displayed metallic normal state behavior before the onset transition temperature (Tc-onset) which was between 102 and 104 K. The transition temperature (Tcχ’) from AC susceptibility measurement also showed the similar results between 101 and 103 K. Tc-zero was slightly suppressed with the addition of nanosized NiFe2O4. The peak temperature Tp from the imaginary part of the susceptibility χ” was found between 77 - 91 K for all samples. The highest transport critical current density (Jc) at 77 K was shown by sample x = 0.001 wt.% at 2213 mAcm-2. Nanosized NiFe2O4 has significantly enhanced the Jc of (Tl0.85Cr0.15)Sr2CaCu2O7-δ superconductor.

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Transport Critical Current Density of (Bi1.6Pb0.4)Sr2Ca2Cu3O10Ceramic Superconductor with Different Nanosized Co3O4Addition

Advances in Condensed Matter Physics ◽

10.1155/2014/498747 ◽

2014 ◽

Vol 2014 ◽

pp. 1-8 ◽

Cited By ~ 5

Author(s):

Nur Jannah Azman ◽

Huda Abdullah ◽

Roslan Abd-Shukor

Keyword(s):

Critical Current Density ◽

Critical Current ◽

Current Density ◽

Diffraction Method ◽

Solid State Reaction Method ◽

Small Addition ◽

Transport Critical Current Density ◽

X Ray Diffraction ◽

Conventional Solid State Reaction ◽

X Ray

The effect of different nanosized Co3O4(10, 30, and 50 nm) addition on the Bi1.6Pb0.4Sr2Ca2Cu3O10(Co3O4)xsuperconductor withx=0–0.05 wt.% has been investigated using X-ray diffraction method, scanning electron microscopy, transition temperature, and critical current densityJcmeasurements. The samples were prepared by the conventional solid-state reaction method. Samples withx=0.01 wt.% Co3O4(10 nm) showed the highestTc-zeroat 102 K. The highestJcwas observed in thex=0.03 wt.% Co3O4(10 nm) andx=0.02 wt.% Co3O4(30 nm) samples. At 77 K,Jcof the 10 nm and 30 nm Co3O4added samples was 6 and 13 times larger than the nonadded samples, respectively. Small addition of Co3O4nanoparticles in the Bi1.6Pb0.4Sr2Ca2Cu3O10(Bi-2223) samples enhanced the critical current density and the phase formation. The larger Co3O4nanoparticle (50 nm) had a greater degradation affect on superconductivity of the Bi-2223 phase.

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