Concentration effect on high field pinning and transport behaviors in nano- Y2 BaCuO5 doped Sm-Ba-Cu-O superconductor

Shih Yun Chen, Yang Chung Liao, In Gann Chen, Maw Kuen Wu

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3 Citations (Scopus)

Abstract

Recent studies indicate that the addition of nanoscale RE2 BaCuO5 (nmRE211) (RE=Y, Sm, and Nd) in melt-texture-grown Sm-Ba-Cu-O bulk material can enhance the critical current density (Jc), especially in high magnetic fields. It is known that the δ Tc pinning is the reason for high field peak effect in Jc -H curves. The Jc -H curves exhibit enhancement compared with those of undoped samples. The analysis of first derivations of R-T curves found two peaks in dRdT curves representing two characteristic temperatures in high magnetic fields, where the lower temperature is attributed to the weak superconducting phase. The relative strength of the two peaks varies with the concentration of nmY211 additions. This argument is consistent with microstructural observations and pinning analysis results.

Original languageEnglish
Article number08M508
JournalJournal of Applied Physics
Volume99
Issue number8
DOIs
Publication statusPublished - 2006

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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