Effect of (Ta/Nb) co-doping on the magnetoresistivity and flux pinning energy of the BPSCCO superconductors

Özçelık, Bekir; Gündoğmuş, Hakan; Yazici, D.

doi:10.1007/s10854-014-1895-1

Cited by 9 publications

(7 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bi(CH 3 COO) 3 (≥99.99%, Aldrich), Sr(CH 3 COO) 2 •0.5H 2 O (99%, Panreac), Ca(CH 3 COO) 2 •2H 2 O (98%, Alfa Aesar), Cu(CH 3 COO) 2 •H 2 O (98%, Panreac) and Na(CH 3 COO) (99%, Alfa Aesar) commercial powders were used as starting materials. They were weighed in stoichiometric amounts and dissolved in a mixture of glacial acetic acid (CH 3 COOH) (Panreac PA) and distilled water.…”

Section: Methodsmentioning

confidence: 99%

“…Since the discovery of Bi-based high-temperature superconductors [1], which are among the most promising materials for technological and industrial applications, many experimental studies have been performed [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] in order to improve their critical temperature (Tc), critical current density (Jc), and better understand the structural properties of the system. The BSCCO families can be described by the Bi 2 Sr 2 Ca n-1 Cu n O 2n+4+y general formula, where n=1, 2 and 3.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Improvement of superconducting properties in Na-doped BSCCO superconductor

Özçelık

Gürsul

Sotelo

et al. 2014

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

In this study, the effect of Na substitution on the structural, electrical and magnetic properties of Bi 2 Sr 2 Ca 1-x Na x Cu 2 O 8+y superconductor with x=0.0, 0.05, 0.075, 0.1, 0.15, and 0.2 has been investigated. The effects of partial replacement of Na for Ca have been investigated by electrical resistivity (ρ-T), scanning electron microscopy (SEM), X-ray diffraction (XRD), and magnetic characterizations. XRD results have shown that the Bi-(2212) phase is the major one independently of the Na-concentration. SEM results indicate that the microstructure of samples is improved with increasing of Na-contents. From the electrical resistivity measurements it has been found that Tc is slightly higher than 92 K for Na-concentrations up to 0.20. Moreover, this trend is maintained in the magnetic measurements where the hysteresis loops are increased with increasing Na-concentrations. The maximum calculated Jc, using Bean's model, is around 10*10 6 A/cm 2 at 10 K and ∼ 1000 Oe for the 0.075 Na doped samples.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improvement of superconducting properties in Na-doped BSCCO superconductor

Özçelık

Gürsul

Sotelo

et al. 2014

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

show abstract

“…TAFC was first pointed out by Anderson [14], at which creep involves bundles of flux lines hopping over the pinning barriers due to the thermal activation although Lorentz force exerted on the flux bundle by the current is smaller than the pinning force. Several researchers have pointed out that the TAFC model is the best model for describing the electrical resistivity broadening data under applied magnetic field for various phases of Bi-based superconductors [20][21][22][23][24][25][26][27][28]. Ambegaokar and Halperin's theory is another approach to study the flux line motion under applied magnetic field [29].…”

Section: T Tmentioning

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

“…Following the discovery of Bi-based superconductors [1], researchers work on this type of high-temperature superconductors. A lot of works have been done in the field of high-temperature superconductors [2]- [10] in order to improve their critical current density (J c ), critical temperature (T c ), How to cite this paper: Asghari, R., Sedghi, H., Arsalan, L.Ç. and Naghshara, H. [11] [12] [13].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Niobium (Nb) Substitution on Structural and Superconducting Properties of (Bi, Pb)-Based Superconductors

Asghari¹,

Sedghi²,

Arsalan³

et al. 2017

AMPC

View full text Add to dashboard Cite

In this study, the effects of Nb substitution on the Bi-based superconducting materials have been investigated. The X-ray diffraction measurement indicated coexistence of Bi-2212, Bi-2223 phases and some impurity phases of CuO, CuNb 2 O 6 , CaNb 2 O 6 , CaCuO 2 , and Sr 5 Nb 5 O 16 . With increasing Nb content, impurity phases consistent with the Nb element appeared in the samples. Also with increasing Nb content, the Bi-2223 phase of samples gradually was decreased and in contrast, the Bi-2212 phase was increased. From the SEM, results have been seen that with increasing of Nb contents, the crystal structure of the samples was slightly changed because of the disrupted grain growth. From the electrical resistivity measurements, it has been found that with increasing of Nb contents, critical temperature decreases and the superconducting transition width (∆T) increases. Estimated critical current density showed that J c decreases with increasing Nb content, as expected.

show abstract

Effect of (Ta/Nb) co-doping on the magnetoresistivity and flux pinning energy of the BPSCCO superconductors

Cited by 9 publications

References 34 publications

Improvement of superconducting properties in Na-doped BSCCO superconductor

Improvement of superconducting properties in Na-doped BSCCO superconductor

Magnetoresistivity studies for BiPb-2223 phase added by BaSnO3 nanoparticles

Investigation of Niobium (Nb) Substitution on Structural and Superconducting Properties of (Bi, Pb)-Based Superconductors

Contact Info

Product

Resources

About