Analisis Kekonduksian Lebihan Superkonduktor YBa2Cu3O7-δ Ditambah Nanozarah PbO

Al-Sharabi, Annas; Tajuddin, Sarah Yasmin; Saffiey, Au Diya Fatihah Wan; Jasman, Syazana; Alwi, Hasan Adli; Jumali, Mohammad Hafizuddin Haji; Abd‐Shukor, R.

doi:10.17576/jsm-2016-4512-21

Cited by 11 publications

(1 citation statement)

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“…The x = 0.2 sample showed the highest Tc although the J and ξc(0) values are not higher than x = 0.3. In nanosized PbO doped YBa2Cu3O7, conductivity analysis showed that nano-sized PbO induced transition from 2 dimensional to 3 dimensional conductivity with the highest transition temperature T2D-3D in the x = 0.20 sample [18].…”

Section: Resultsmentioning

confidence: 98%

Effect of Cr Substitution on the Formation and Fuctuation-Induced Conductivity Analysis of (Tl1-xCrx)Sr2CaCu2O7 Superconductor

Ghazeian

Ghoranneviss

Abd‐Shukor

2019

SSP

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The (Tl1-xCrx)Sr2CaCu2O7 (Tl-1212) sample with nominal starting composition for x = 0.0, 0.2 and 0.3 were prepared by the solid-state reaction method. The samples were studied by powder x-ray diffraction method and electrical resistance versus temperature measurement. Excess conductivity analysis was carried out using the Aslamazov–Larkin (AL) theory, and the dimension of fluctuation-induced conductivity (λ) was determined. The Lawrence–Donaich (LD) theory was used to calculate the coherence length (ξc(0)), Josephson coupling (J), and γ = (ξab(0)/ξc(0)) of the superconductive samples. Excess conductivity analysis showed that Cr substitution induced 2D-to-3D conductivity transition at the highest transition temperature (T2D-3D) observed at x = 0.3. The calculations based on the Lawrence–Doniach model revealed that the shortest coherence length and weakest inter-plane coupling (J) occurred when x = 0.2. The sample with x = 0.2 and 0.3 showed the Tl-1212 as the major phase. The highest onset temperature of 110 K was observed in the x = 0.2 sample. Our result showed that the formal value of 2.3+ is more important than the Josephson interlayer coupling J in optimizing the transition temperature.

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Section: Resultsmentioning

confidence: 98%