Magnetic transport properties and Hall effect in Gd1−xPrxBa2Cu3O7−δ system

Khosroabadi, H.; Daadmehr, V.; Akhavan, M.

doi:10.1016/s0921-4534(02)01876-2

Cited by 34 publications

(15 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Similar results were obtained by other research groups. [20][21][22][23] The temperature dependence of the calculated upper critical field (H c2 ) values for the Tl-2212 sample is plotted in Figure 4. It was found that H c2 (T) values increased with decreasing temperature.…”

Section: Effect Of DC Magnetic Field Resultsmentioning

confidence: 99%

Influence of KMnO4 Substitution on the Structural and Transport Properties of Tl2Ba2Ca(Cu1-xRx)2Oδ+6 System

Hassan¹,

Alnakhlani²,

Abdulhafiz³

et al. 2016

JPS

View full text Add to dashboard Cite

show abstract

Section: Effect Of DC Magnetic Field Resultsmentioning

confidence: 99%

Influence of KMnO4 Substitution on the Structural and Transport Properties of Tl2Ba2Ca(Cu1-xRx)2Oδ+6 System

Hassan¹,

Alnakhlani²,

Abdulhafiz³

et al. 2016

JPS

View full text Add to dashboard Cite

show abstract

“…Our result is consistent with the Palstra et al [4] result for Bi 2 Sr 2 CaCu 2 O 8-δ system, where β depends on the range of magnetic field. The nonlinearity and the positive curvature of lnU 0 vs. lnβ for GdBaPr-123 show that Pr at Ba site has weaker flux pinning effect than Pr at R site, since the lnU 0 -lnβ curves of GdPr-123 are linear [6]. Therefore, the destructive effect of Pr at Ba site in comparison with the case, where Pr is substituted at R site requires less energy to move fluxes i.e., suppressing the superconductivity with increasing H. The more destructive effect of Pr at Ba site with respect to Pr at R site has also been concluded through other measurements such as pseudogap [13], and T c [14].…”

Section: Methodsmentioning

confidence: 96%

“…So, the real positions of Pr/Ba atoms and effect of Pr in R-123 and other families of HTSC is a crucial subject in studying HTSC. In this paper, we will report the magnetoresistance measurements of Gd(Ba 2-x Pr x )Cu 3 O 7+δ (GdBaPr-123) system, and compare it with the magnetic properties of (Gd 1-x Pr x )Ba 2 Cu 3 O 7-δ (GdPr-123) [6]. The TAFC model will be applied to fit the resistivity broadening curve under magnetic field with decreasing temperature.…”

Section: Introductionmentioning

confidence: 99%

Effects of Pr doping and magnetic field on vortex pinning in Gd‐123 based HTSC

Akhavan

2004

phys. stat. sol. (c)

Self Cite

View full text Add to dashboard Cite

The magnetoresistance of single phase polycrystalline Gd(Ba 2-x Pr x )Cu 3 O 7+δ samples have been studied within thermally activated flux creep model. The decrease of pinning energy with applied magnetic field can be scaled to two power law relations for magnetic fields, smaller and also larger than about 1 kOe. The derived pinning energy shows that the Pr-doping, similar to weak links, decreases the vortex flux pinning energy. It is also concluded that the substitution of Pr at Ba site has a more destructive effect on the flux dynamics than Pr at rare earth site.

show abstract

“…In AH theory, the physical picture of the normalized barrier height makes the separation of magnetic field effect and thermal effect in the normalized barrier height achieved as ( , ) ( )(1 ) [32,33], and ( ) C B is a magnetic field dependent parameter from which the critical current density at 0 K can be calculated using the following relation [30]: …”

Section: Theoretical Approachmentioning

confidence: 99%

Magnetoresistivity studies for BiPb-2223 phase added by BaSnO3 nanoparticles

Barakat

Habanjar

2017

J Adv Ceram

View full text Add to dashboard Cite

Co-precipitation method and conventional solid-state reaction technique were used to synthesize BaSnO 3 nanoparticles and (BaSnO 3 ) x /Bi 1.6 Pb 0.4 Sr 2 Ca 2 Cu 3 O 10+δ (0 ≤ x ≤ 1.50 wt%) samples, respectively. X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and electrical resistivity data were used to characterize BiPb-2223 phase added by BaSnO 3 nanoparticles. The relative volume fraction and superconducting transition temperature T c of BiPb-2223 phase were enhanced by increasing BaSnO 3 addition up to 0.50 wt%. These parameters were decreased with further increase of x. The resistive transition broadening under different applied DC magnetic fields (0.29-4.40 kG) was analyzed through thermally activated flux creep (TAFC) model and Ambegaokar-Halperin (AH) theory. Improvements of the derived flux pinning energy U, critical current density J c (0) estimated from AH parameter C(B), and upper critical magnetic field c2 (0) B , were recorded by adding BaSnO 3 nanoparticles up to 0.50 wt%, beyond which these parameters were suppressed. The magnetic field dependence of the flux pinning energy and critical current density decreased as a power-law relation, which indicated the single junction sensitivity between the superconducting grains to the applied magnetic field. Furthermore, the increase in the applied magnetic field did not affect the electronic thermal conductivity e  above the superconducting transition temperature and suppressed it below T c .

show abstract

Magnetic transport properties and Hall effect in Gd1−xPrxBa2Cu3O7−δ system

Cited by 34 publications

References 65 publications

Influence of KMnO4 Substitution on the Structural and Transport Properties of Tl2Ba2Ca(Cu1-xRx)2Oδ+6 System

Influence of KMnO4 Substitution on the Structural and Transport Properties of Tl2Ba2Ca(Cu1-xRx)2Oδ+6 System

Effects of Pr doping and magnetic field on vortex pinning in Gd‐123 based HTSC

Magnetoresistivity studies for BiPb-2223 phase added by BaSnO3 nanoparticles

Contact Info

Product

Resources

About