Elemental substitution at Tl-site of TlSr2CaCu2O7 superconductor: A review

Nur-Akasyah, J.; Ilhamsyah, A. B. P.; Abd‐Shukor, R.

doi:10.1016/j.ceramint.2020.04.210

Cited by 12 publications

(7 citation statements)

References 40 publications

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“…Despite having a smaller ionic radius, a recent study revealed that Cr and Se increased Tc of the Tl-1212 Our results show that the substitution of trivalent (+3) and tetravalent (+4) elements increased the superconductivity. These results are similar to a recent study, which reported that elements with higher valences enhanced the transition temperature and are effective in stabilizing the Tl-1212 phase [30]. Moreover, this study aimed to compare the efficacy of multivalent elements with the same stoichiometric ratio on the superconductivity of the Tl-1212 phase.…”

Section: Electrical Resistancesupporting

confidence: 89%

“…The size of the ionic radius for Cr and Se was within the range of the ionic radius of the substitution site (Tl and Cu). Despite having a smaller ionic radius, a recent study revealed that Cr and Se increased T c of the Tl-1212 phase [30]. In line with this point, our results implied that Cr 3+ and Se 4+ with smaller ionic radii induced a high superconducting transition temperature.…”

Section: Electrical Resistancesupporting

confidence: 88%

“…Regarding the valence state of elements, Tl 1+ /Tl 3+ , Cr 2+ /Cr 3+ /Cr 4+ /Cr 5+ /Cr 6+ , Se 4+ /Se 6+ , Ba 2+ , Sr 2+ , Ca 2+ , and Cu 2+ /Cu 3+ are the possible valence of the ions in the Tl 1−x X x (Ba,Sr)CaCu 2 O 7 superconductor with X = Cr and Se, respectively. Tl, Cr, and Se were found to favor a single valence state in the Tl-1212 phase with Tl 3+ [35], Cr 3+ [8,26], and Se 4+ [5,16,30]. Interestingly, the role of Cr in the Tl-1212 phase is highly distinctive and merits specific consideration.…”

Section: Electrical Resistancementioning

confidence: 97%

“…The decreasing trend of the c lattice parameter with the substitution of Cr, Bi, Pb, and Se as in Table 1 is possibly due to their smaller ionic radii being substituted at the Tl site. Considering the ionic radii of Cr, Bi, Pb, and Se for CN = 6 [24], where Cr 3+ = 0.615 Å [8,26], Bi 3+ = 1.03 Å [17,27], Pb 4+ = 0.775 Å [28,29], and Se 4+ = 0.50 Å [5,16,30], it is recommended that these elements were substituted for a larger Tl site (Tl 1+ = 1.50 Å and Tl 3+ = 0.885 Å). These results indicate that there is a significant correlation between the variation of the a and c lattice parameters with the effective ionic radius of the substituted elements (CN = 6) as mentioned in the previous study [30].…”

Section: Xrd Patternsmentioning

confidence: 99%

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Elemental Substitution at Tl Site of Tl1−xXx(Ba, Sr)CaCu2O7 Superconductor with X = Cr, Bi, Pb, Se, and Te

2023

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The effects of elemental substitutions at the Tl site of a Tl1−xXx(Ba, Sr)CaCu2O7 superconductor with X = Cr, Bi, Pb, Se, and Te were investigated. This study aimed to determine the elements that enhance and suppress the superconducting transition temperature of the Tl1−xXx(Ba, Sr)CaCu2O7 (Tl-1212) phase. The selected elements belong to the groups of transition metal, post-transition metal, non-metal, and metalloid. The relationship between the transition temperature and ionic radius of the elements was also discussed. The samples were prepared by the solid-state reaction method. The XRD patterns showed a single Tl-1212 phase was formed in the non- and Cr-substituted (x = 0.15) samples. The Cr-substituted samples (x = 0.4) showed a plate-like structure with smaller voids. The highest superconducting transition temperatures (Tc onset, Tcχ′, and Tp) were also achieved by the Cr-substituted samples for x = 0.4 compositions. However, the substitution of Te suppressed the superconductivity of the Tl-1212 phase. Jc inter (Tp) for all samples was calculated to be in the range of 12–17 A/cm2. This work shows that substitution elements with a smaller ionic radius tend to be more favorable in improving the superconducting properties of the Tl-1212 phase.

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Section: Electrical Resistancesupporting

confidence: 89%

Section: Electrical Resistancesupporting

confidence: 88%

Section: Electrical Resistancementioning

confidence: 97%

Section: Xrd Patternsmentioning

confidence: 99%

See 2 more Smart Citations

Elemental Substitution at Tl Site of Tl1−xXx(Ba, Sr)CaCu2O7 Superconductor with X = Cr, Bi, Pb, Se, and Te

2023

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“…Previously, through substitution of Ca, the Tc of synthesized Tl-Ba-Cu-O system recorded its enhancement from 80 K to 100 K [3]. However, it is not easy to prepare superconductors Tl-1212 due to the high valence of Cu [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Transport Critical Current Density of Tl-1212 Bulk Superconductor Added with Nickel-Zinc Ferrite Nanoparticles

Kong

Khalid

Nizam

et al. 2021

SSP

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High temperature superconductor Tl-1212 with nominal starting composition (Tl0.85Cr0.15)Sr2CaCu2O7-δ was prepared with high purity oxide powders using a solid state reaction method. Small amounts of nickel-zinc ferrite nanoparticles (Ni0.5Zn0.5Fe2O4) at compositions 0.01, 0.02, 0.05 and 0.10 wt. % were added into Tl-1212 superconductors. The effect of Ni0.5Zn0.5Fe2O4 nanoparticles’ addition on the critical temperature (Tc), transport critical current density (Jc), phase formation, and morphology was studied. The samples were characterized using electrical resistance measurement, transport critical current density measurement, powder X-ray diffraction method (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX). Zero-resistance critical temperature (Tc-zero) was found to rise from 97 K to 99 K with increasing Ni0.5Zn0.5Fe2O4 nanoparticles concentration. The highest value recorded for transport critical current density (Jc) was 3,120 mA/cm2 at 77 K, which exhibited by sample with 0.02 wt. % of Ni0.5Zn0.5Fe2O4 nanoparticles. All samples showed a dominant Tl-1212 phase and exhibited tetragonal lattice structure in the P4/mmm space group. SEM micrographs showed close-packed microstructure with low porosity. EDX mapping showed that Ni0.5Zn0.5Fe2O4 nanoparticles were well distributed in the Tl-1212 samples. This study demonstrated that Ni0.5Zn0.5Fe2O4 nanoparticles have functioned as effective flux pinning centers to Tl-1212 superconductors and thus significantly enhanced its Jc.

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Effect of copper (II) sulfide addition on the transport critical current density and AC susceptibility of Bi1.6Pb0.4Sr2Ca2Cu3O10 superconductor

Ilhamsyah,

Zabidi,

Hashidi

et al. 2024

Appl. Phys. A

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Elemental substitution at Tl-site of TlSr2CaCu2O7 superconductor: A review

Cited by 12 publications

References 40 publications

Elemental Substitution at Tl Site of Tl1−xXx(Ba, Sr)CaCu2O7 Superconductor with X = Cr, Bi, Pb, Se, and Te

Elemental Substitution at Tl Site of Tl1−xXx(Ba, Sr)CaCu2O7 Superconductor with X = Cr, Bi, Pb, Se, and Te

Enhanced Transport Critical Current Density of Tl-1212 Bulk Superconductor Added with Nickel-Zinc Ferrite Nanoparticles

Effect of copper (II) sulfide addition on the transport critical current density and AC susceptibility of Bi1.6Pb0.4Sr2Ca2Cu3O10 superconductor

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