𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Synthesis of the Pb-based superconductor of the Pb3201 phase (Pb2Cu)Sr0.9La1.1CuO6+δ by the modified polymerized complex method

✍ Scribed by Masatsune Kato; Atsushi Sakuma; Takashi Noji; Yoji Koike

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
447 KB
Volume
266
Category
Article
ISSN
0921-4534

No coin nor oath required. For personal study only.

✦ Synopsis

We have succeeded in obtaining single-phase samples of the Pb3201 phase (Pb2Cu)Sr0.9Lal.lCuO6+ ~ by the modified polymerized complex method. At the first step of the synthesis, a transparent gel is found to be obtained by increasing the molar ratio of citric acid to total metal ions up to 5 without controlling the pH of the solution and without ethylene glycol. Secondly, the precursor is prepared by calcining the transparent gel. Finally, highly homogeneous samples with the onset temperature of the superconducting transition, ~ 37 K, are obtained by sintering the precursor and subsequently annealing it. Moreover, the Pb3201 phase is found to be stable only for x -1.1 in (Pb2Cu)Sr2_xLaxCuO6+~.

📜 SIMILAR VOLUMES

A lead NMR-study of the superconductor P
A lead NMR-study of the superconductor Pb2Sr0.9La1.1Cu2O6.1
✍ F.J.M. Benschop; H.B. Brom; W.J.A. Maaskant 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 748 KB

Pb2Sr0.9LaHCu2Or.l is one of the few high-To superconductors with a CuO2-monolayer. Here we report the 2°7pb-NMR measurements of the Knight shift and the nuclear spin-lattice and spin-spin relaxation rate on a powder sample with a To= 33 K. As in YBa2Cu3Or.63, the Knight shift, as a function of temp

Current characteristics of Bi1.7Pb0.3Sr2
Current characteristics of Bi1.7Pb0.3Sr2Ca2Cu5Oy superconductors prepared by the cast annealing method
✍ Y.G. Wang; J.S. Wang; N.L. Wang; G.C. Han; X.P. Jiao 📂 Article 📅 1990 🏛 Elsevier Science 🌐 English ⚖ 223 KB

Superconducting materials of nominal composition Bil.7Pb0.3Sr2Ca2CusO r were prepared by the cast annealing method. Electromagnetic measurements and X-ray powder diffraction patterns from the samples show that the major phase of the oxide superconductor is the superconducting phase at 110 K, with ze

Localisation of excess oxygen in the hig
Localisation of excess oxygen in the high-Tc 2223-phase Bi1.9Pb0.3Sr2.0Ca1.9Cu3.0O10+δ by neutron powder diffraction
✍ G. Miehe; T. Vogt; H. Fuess; M. Wilhelm 📂 Article 📅 1990 🏛 Elsevier Science 🌐 English ⚖ 294 KB

Neutron and X-ray powder diffractograms of the title compound were refined by the Rietveld method. Within the bismuth layer an additional oxygen site with population parameter 0.12 was found which is interpreted as the excess oxygen. From the comparison of population parameters from neutron and X-ra