Giant enhancement of oxygen mobility in high-Tc superconductors by atomic substitution

✍ Scribed by J.L. Tallon; D.M. Pooke; M.P. Staines; M.E. Bowden; N.E. Flower; R.G. Buckley; M.R. Presland; R.L. Davis

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 606 KB
• Volume: 171
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(90)90456-o

✦ Synopsis

Most high-To superconductors require loading or unloading of oxygen after synthesis, in order to maximise the transition temperature, T¢. The rate of oxygen diffusion in dense, bulk material, is so slow as to be prohibitive, or at best calls for a lengthy manufacturing process. We report here that by a variety of aliovalent atomic substitutions in YBa2Cu3OT_~, the rate of oxygen loading can be increased by up to 100 times allowing a large decrease in processing time for bulk material.