Abstract
The effect of CdTe addition on YBa2Cu3O7−δ (CdTe) x (x = 0–0.10) has been studied. XRD patterns showed the presence of impurities including CdTe for x ≥ 0.05 wt%. The resistance versus temperature curves showed metallic behavior for all samples. The onset temperature T c onset for all samples is between 90 and 92 K. The superconducting transition width, ΔT c = 4 K for all samples except for x = 0.1 wt% where ΔT c = 6 K. The superconducting transition determined by AC susceptibility measurement also showed little change in \(T_{\mathrm {c}\chi ^{\prime }}\) (between 89 and 92 K). However, the peak temperature T p of the imaginary part of the susceptibility χ″, showed a drastic decrease for samples with x > 0.05 wt%. This indicated that the superconducting grains were strongly decoupled for x > 0.05 wt% due to the impurities as observed in the XRD pattern. The intergrain critical current density, J c at T p for the x = 0 sample is J c (82 K) = 17 A cm−2. These results can be useful in the fabrication of semiconductor/YBCO superconductor hybrid systems.
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This research was supported by the Ministry of High Education of Malaysia under grants no. FRGS/1/2017/SG02/UKM and GP-K005338.
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Nur-Akasyah, J., Nur-Shamimie, N.H. & Abd-Shukor, R. Effect of CdTe Addition on the Electrical Properties and AC Susceptibility of YBa2Cu3O7−δ Superconductor. J Supercond Nov Magn 30, 3361–3365 (2017). https://doi.org/10.1007/s10948-017-4157-7
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DOI: https://doi.org/10.1007/s10948-017-4157-7