AC Magnetic Susceptibility of Y3Ba5Cu8O18 Substituted by Nd3+ and Ca2+ Ions

Rekaby, M.; Awad, R.; Abou‐Aly, A. I.; Yousry, Mona

doi:10.1007/s10948-019-5143-z

Cited by 6 publications

(1 citation statement)

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“…This can be attributed to that lanthanum is the rare-earth element with the largest ionic radius, hindering the stabilization of the La358 structure, which also explains the presence of more stable secondary phases such as La123 and BaCuO 2 in the obtained samples (see Table 1). The XRD peaks in the 2θ range 33 -36° with the (5 3 0), (4 4 2), and (5 3 2) planes correspond to the BaCuO 2 crystal phase, generated by the slow decomposition reaction 22,23 . However, La358 sample was obtained with purities of 50.81% and 85.35% by the method of combustion and solid-state reaction, respectively.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of the La3Ba5Cu8O18-δ and Sm3Ba5Cu8O18-δ superconductors by the combustion and solid-state reaction methods

et al. 2021

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In this paper, the synthesis of the La 3 Ba 5 Cu 8 O 18-δ and Sm 3 Ba 5 Cu 8 O 18-δ superconductors using the combustion method is reported for the first time. Besides, a comparison with the solid-state reaction method was performed. The materials were synthesized at 870 °C for 24 h under oxygen flow. Rietveld refinement showed materials with the main crystal phase corresponding to the orthorhombic structure of space-group Pmm2 (25), with purity in the range 51-85%, which had not reported for the RE358 systems. On the other hand, the magnetic measurements under external fields (30 and 100 Oe) confirmed the diamagnetic response associated with the Meissner effect, and T c values between 24 and 58 K.

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Section: Resultsmentioning

confidence: 99%