Properties of MgB2 superconductor chemically treated by acetic acid

✍ Scribed by K. Hušeková; I. Hušek; P. Kováč; M. Kulich; E. Dobročka; V. Štrbík

• Book ID: 104084486
• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 615 KB
• Volume: 470
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2010.02.001

✦ Synopsis

Commercial Alfa Aesar MgB 2 powder was chemically treated by acetic acid with the aim of MgO removing. Single-core MgB 2 /Fe ex situ wires have been made by powder-in-tube (PIT) process using the powders treated with different acid concentration. All samples were annealed in argon at 950 °C/0.5 h. Differences in transition temperatures and critical currents of acetic acid treated MgB 2 are related to the normal state resistivity, effective carbon substitution from the organic solvent and the active area fraction (grain-connectivity).