The magnetization of PrFeAsO0.60F0.12 superconductor

✍ Scribed by D. Bhoi; P. Mandal; P. Choudhury; S. Dash; A. Banerjee

• Book ID: 104085720
• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 732 KB
• Volume: 471
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2011.02.004

✦ Synopsis

The magnetization of the PrFeAsO 0.60 F 0.12 polycrystalline sample has been measured as functions of temperature and magnetic field (H). The observed total magnetization is the sum of a superconducting irreversible magnetization and a paramagnetic magnetization. Analysis of dc susceptibility v(T) in the normal state shows that the paramagnetic component of magnetization comes from the Pr 3+ magnetic moments. The intragrain critical current density (J L ) derived from the magnetization data is large. The J L (H) curve displays a second peak which shifts towards the high-field region with decreasing temperature. In the low-field region, a plateau up to a field H Ã followed by a power law H À5/8 behavior of J L (H) is the characteristic of the strong pinning. A vortex phase diagram for the present superconductor has been obtained from the magnetization and resistivity data.