Studies of SmBa2Cu3O7-δ / ZnFe2O4 Superconducting Composites

Authors

Hadi Basma, Assistant Professor, Faculty of Science, Beirut Arab University, Beirut, LebanonFollow
Waleed Abdeen, Assistant Professor, Faculty of science, Alexandria University, EgyptFollow
Ayman El-Tahan, Assistant Professor, Faculty of Science, Tanta University, Tanta, EgyptFollow
El-Maghraby El-Maghraby, Professor, Faculty of Science, Damanhour University, Damanhour, EgyptFollow
Ahmed Khalaf, Assistant Professor, Faculty of Science, Damanhour University, Damanhour, EgyptFollow

Keywords

SmBa2Cu3O7-δ, ZnFe2O4, electron paramagnetic resonance, number of spins.

Disciplines

Architecture | Business | Engineering | Physical Sciences and Mathematics

Abstract

SmBa2Cu3O7-δ /(ZnFe2O4)x superconducting composites with 0.00 ≤ x ≤ 0.20 wt% were prepared by the usual solid-state reaction method. The prepared samples were investigated using X-ray powder diffraction (XRD) at room temperature and electron paramagnetic resonance (EPR) measurements in the temperature range (100-295 K). It is found that EPR spectra are dominated by an anisotropic Cu2+ EPR pattern. Moreover, the EPR spectral intensity increases as the temperature decrease from room temperature down to 100 K. The number of spins (N) participating in EPR resonance, the activation energy (Ea), the paramagnetic susceptibility (c) and the effective magnetic moment (µeff) are calculated as a function of both nanosized ZnFe2O4 addition and temperature. The results are interpreted in terms of localized Cu2+ ions from non-superconducting impurity phases and confirmed by magnetization-field (M-H) hysteresis measurements.

Recommended Citation

Basma, Hadi; Abdeen, Waleed; El-Tahan, Ayman; El-Maghraby, El-Maghraby; and Khalaf, Ahmed (2020) "Studies of SmBa2Cu3O7-δ / ZnFe2O4 Superconducting Composites," BAU Journal - Science and Technology: Vol. 1: Iss. 2, Article 10.
DOI: https://doi.org/10.54729/2959-331X.1024

ISSN

2959-331X