Synthesis of Al2O3 nanoparticles highly distributed in YBa2Cu3O7 superconductor by citrate–nitrate auto-combustion reaction

Suan, Mohd Shahadan Mohd; Johan, Mohd Rafie

doi:10.1016/j.physc.2013.05.022

Cited by 22 publications

(5 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Base on the research by Khoshnevisan (2002), there was a no weight changes until 400°C and after that different reaction carried out. Meanwhile, from 420°C to 995.62°C, the weight change was at 13.14% for 10.158 mg. From the temperature of 900°C to 950°C, the sample show a stabilize end product which is comparable to past research from (Suan & Johan, 2013). The sample of YBCO with the addition of Al 2 O 3 show in the Figure 2, where the TGA curve shows the formation of YBCO at the range temperature of 900°C to 950°C.…”

Section: Resultssupporting

confidence: 85%

“…The Al 2 O 3 addition samples did not show any changes in terms of structural properties and is quite similar as observed in the XRD patterns of pure YBCO. This is attributed to the fact that in these compositions Al2O3 nanoparticles were existed as another phase and uniformly distributed in YBCO matrix (Suan et al, 2013). Thus, the Table 1 shows the unit cell parameter and the unit cell volume for YBa2Cu3O7x with Al2O3 addition.…”

Section: Resultsmentioning

confidence: 97%

See 1 more Smart Citation

Synthesis and Effect of Al2O3 Added in Yttrium Barium Copper Oxide YBa2Cu3O? by Solid State Reaction Method

Arlina

Karim

Chen

et al. 2021

JTRSS

View full text Add to dashboard Cite

The aim of this research was synthesize YBa2Cu3O? (YBCO) and to study the effect of Al2O3 additions at x= 0.00, 0.10, 0.20, 0.50, 1.50 and 3.50 wt.%. The samples were investigated through Thermogravimetric Analyzer (TGA) and X-Ray Diffraction (XRD). All samples prepared by solid state reaction method with calcination process at 900°C and sintering process at 950°C. The TGA analysis indicated weight loss was complete at 910°C. XRD patterns showed the orthorhombic structure with lattice parameters a=3.821 Å, b= 3.880 Å and c= 11.663 Å, respectively. The Al2O3 added samples did not show any new peak however the sharpness and broadening peaks was changed. The crystallite sizes of the samples were calculated from the width of the selected peak and half maximum. The size is slowly increased by increasing the Al2O3 addition. These result indicated that addition does not affect on the structure but the crystallite sizes increase affect the morphology images

show abstract

Section: Resultssupporting

confidence: 85%

Section: Resultsmentioning

confidence: 97%

Synthesis and Effect of Al2O3 Added in Yttrium Barium Copper Oxide YBa2Cu3O? by Solid State Reaction Method

Arlina

Karim

Chen

et al. 2021

JTRSS

View full text Add to dashboard Cite

show abstract

“…This scenario has been reported for 0.1 and 0.3 wt% alumina inclusions samples elsewhere [35]. The combination of Al 3+ ions into the Y site affects the critical temperature T c of the specimens significantly and degradation of superconductivity will occur consequently [36]. Superconductivity of YBCO is associated not only with the oxygen content but also with the ordering of the oxygen atoms and oxygen vacancies in the Cu-O basal plane.…”

Section: Excess Conductivity Methodssupporting

confidence: 56%

Conductivity Fluctuation and Some Parameters of High temperature Superconductor Polycrystalline Y1Ba2Cu3O7−δ doped with Silver Nanoparticles

Shams

Ranjbar

2019

Braz J Phys

View full text Add to dashboard Cite

In this study, we report the effect of Ag nanoparticles doping on the dimensional fluctuations of superconducting order parameters, crystal structure, and some parameters of Y 1 Ba 2 Cu 3 O 7−δ + × Ag (x = 0.0, 0.06, 0.1, 0.3, and 0.6 wt%) polycrystalline ceramics. By increasing the content of Ag in YBCO matrix, X-ray diffraction (XRD) with the Rietveld refinement technique revealed that the crystal lattice parameters changed and the orthorhombicity decreased slightly. Also, the increase of Ag wt% caused a decrease of superconducting transition temperatures (Tc) which are determined from the standard four-probe method and dropped abruptly. Aslamazov-Larkin (AL) model was used to analyze excess conductivity fluctuation. Lawerence-Doniach (LD) temperature named T LD which is responsible for the dimensional nature of fluctuation inside the grains is influenced by nano-silver combination in the compound. Crossover temperature from 2D to 3D (T LD) decreased in the mean-field region as a resultant dominance of 3D region by increasing of Ag in YBCO matrix. The decrease in zero-resistance critical temperature (T c zero), zero-temperature coherence length along the c-axis ξ c (0), and super layer length d values implies the degradation of inter-grain weak links, more disorder state of samples and unsettling of the mean free path for the charge carriers respectively with addition of silver nanoparticles. The calculations based on AL and LD model showed the highest anisotropy (γ = 1.34681) for the x = 0.6 sample. The size of the Ag ions, being larger compared to Cu ions, and the number of substitution sites affects the coupling between the CuO2 planes and that results in higher anisotropy. Critical magnetic fields B c1 (0), B c2 (0), and critical current density J c (0) were indirectly calculated from the Ginzburg-Landau (GL) number and GL equations. By increasing the doping level of silver nanoparticle, these parameters were found to be higher in Ag-added YBCO samples compared to the pure Y123, meaning better intrinsic flux pinning properties of doped Y123. The silver nanoparticle inclusion reduces the grain size and increases the strength and hardness of the parent compound.

show abstract

“…The COP sample is having agglomerates of fine grain particle while SSR sample is having larger grain. The TiO2 does act as reinforcing agent as that it enters the grain as for its growth [7]. Most of it are formed within the grains and obviously closed inclined from weight percentage of TiO2 addition.…”

Section: Resultsmentioning

confidence: 99%

Comparison between Solid State Reaction and Coprecipitation Method of Titanium Oxide Addition on the YBa2Cu3Oδ Ceramics

Ali

Ameram

Auli

2020

MSF

View full text Add to dashboard Cite

In this work, comparison of TiO2 additions on the physical properties of YBa2Cu3Oδ superconductor system with nominal starting compositions at x= 0, 1, 2, and 5 wt.% was studied derived via solid state reaction and co-precipitation method. The samples were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The result from XRD shown that all the samples were polycrystalline for solid state reaction, while single phase appear for co-precipitation methods. The intensity of the peak become higher with increasing amount of TiO2 addition indicating the presence of increased amount of the unreacted in the samples. The refine lattice parameters indicated that all the samples have an orthorhombic crystal structure without occurrence of orthorhombic-tetragonal phase transformation. Furthermore, from SEM images for solid state reaction and co-precipitation method showed that the grain size of the samples decreased with TiO2 increased. Small addition of TiO2 derived from co-precipitation method enhanced the YBCO microstructures.

show abstract

Synthesis of Al2O3 nanoparticles highly distributed in YBa2Cu3O7 superconductor by citrate–nitrate auto-combustion reaction

Cited by 22 publications

References 17 publications

Synthesis and Effect of Al2O3 Added in Yttrium Barium Copper Oxide YBa2Cu3O? by Solid State Reaction Method

Synthesis and Effect of Al2O3 Added in Yttrium Barium Copper Oxide YBa2Cu3O? by Solid State Reaction Method

Conductivity Fluctuation and Some Parameters of High temperature Superconductor Polycrystalline Y1Ba2Cu3O7−δ doped with Silver Nanoparticles

Comparison between Solid State Reaction and Coprecipitation Method of Titanium Oxide Addition on the YBa<sub>2</sub>Cu<sub>3</sub>O<sub>δ</sub> Ceramics

Contact Info

Product

Resources

About