Critical current densities in K3C60/Rb3C60 powders determined from AC/DC susceptibility measurements

Lee, M.W.; Tai, M. F.; Luo, Shyh-Chyu; Shi, Jen–Bin

doi:10.1016/0921-4534(95)00100-x

Cited by 20 publications

(7 citation statements)

References 15 publications

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“…This value is not too different from those of other superconductors [26]. However, they are quite different from what is expected (β = 1.5) from Ginzburg-Landau theory for J c (T) of an infinite slab near T c [27]. The value of β = 2 indicates that the intergrain junctions are SNS type.…”

Section: Resultscontrasting

confidence: 44%

Superconducting properties of zinc substitution in Tl-2223 phase

Awad

Abou‐Aly

Ibrahim

et al. 2008

Journal of Alloys and Compounds

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Section: Resultscontrasting

confidence: 44%

Superconducting properties of zinc substitution in Tl-2223 phase

Awad

Abou‐Aly

Ibrahim

et al. 2008

Journal of Alloys and Compounds

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“…These values are not too different from those for other superconductors [29]. But they are quite different from what is expected ( = 1.5) from Ginzburg-Landau theory for J c (T) of an infinite slab near T c [28]. This value, = 2, indicates that the intergrain junctions are of SNS type [30].…”

Section: Samples Investigationcontrasting

confidence: 52%

“…10 for TlBa 2 Ca 2−x Sm x Cu 3 O 9−ı with x = 0.00, 0.05, 0.10 and 0.15. The variation of the current density data with T P is fitted according to the empirical scaling relation [28]:…”

Section: Samples Investigationmentioning

confidence: 99%

Effect of Sm-substitution on the electrical and magnetic properties of (Tl0.8Hg0.2)-1223

Abou‐Aly¹,

Awad²,

Ibrahim³

et al. 2009

Journal of Alloys and Compounds

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“…The imaginary part χ corresponds to the energy absorption in this material. [25][26][27][28] It arises from the formation of the weakly linked superconducting vortex current. Thus, ac susceptibility can be considered as a symbol of the appearance of the superconductivity in this material.…”

Section: Resultsmentioning

confidence: 99%

Superconductivity in potassium-doped 2,2$'$-bipyridine

Zhang¹,

Wang²,

Qin³

et al. 2018

Preprint

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Organic compounds are always promising candidates of superconductors with high transition temperatures. We examine this proposal by choosing 2,2 -bipyridine solely composed by C, H, and N atoms. The presence of Meissner effect with a transition temperature of 7.2 K in this material upon potassium doping is demonstrated by the dc magnetic susceptibility measurements. The real part of the ac susceptibility exhibits the same transition temperature as that in dc magnetization, and a sharp peak appeared in the imaginary part indicates the formation of the weakly linked superconducting vortex current. The occurence of superconductivity is further supported by the resistance drop at the transition together with its suppression by the applied magnetic fields. The superconducting phase is identified to be K3-2,2 -bipyridine from the analysis of Raman scattering spectra. This work not only opens an encouraging window for finding superconductivity after optoelectronics in 2,2 -bipyridine-based materials but also offers an example to realize superconductivity from conducting polymers and their derivatives.

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Critical current densities in K3C60/Rb3C60 powders determined from AC/DC susceptibility measurements

Cited by 20 publications

References 15 publications

Superconducting properties of zinc substitution in Tl-2223 phase

Superconducting properties of zinc substitution in Tl-2223 phase

Effect of Sm-substitution on the electrical and magnetic properties of (Tl0.8Hg0.2)-1223

Superconductivity in potassium-doped 2,2$'$-bipyridine

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