Magnetization study of polycrystalline YBa2AlxCu(3−x)O7−δ (x = 0.05, 0.10 and 0.20) compounds

✍ Scribed by H.R. Kerchner; Yang Ren Sun; J.R. Thompson; H.R. Khan; J.O. Thomson; D.K. Christen

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 716 KB
• Volume: 250
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(95)00300-2

✦ Synopsis

Superconductivity in polycrystalline YBa2AIxCu(3 _x)OT_ ~ materials was characterized by dynamic AC and quasistatic DC magnetometry. Intragranular persistent current density and low-loss intergranular critical current density were deduced using DC and AC techniques, respectively. Addition of aluminum produced modest increases in the intragranular persistent current for x < 0.2, but drastically reduced the intergranular critical current density for x = 0.2. The critical temperature T c for superconductivity decreased only 4% for AI content up to x = 0.2.