Low-field AC susceptibility in Hg-1223 polycrystals

✍ Scribed by D. Berling; E.V. Antipov; J.J. Capponi; M.F. Gorius; B. Loegel; A. Mehdaoui; J.L. Tholence

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 409 KB
• Volume: 225
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(94)90716-1

✦ Synopsis

The complex AC susceptibility of HgBa2Ca2Cu3Os+6(Hg-1223) has been studied for DC magnetic fields 00e <Hvc < 50 Oe and AC magnetic fields 0.10e < hAc < 70 Oe allowing the determination to be made of the irreversibility line both in the (Hvc, T) plane and in the (h^c, T) plane. The critical dynamic field h~* has furthermore been obtained in the low AC field limit. All these results are consistent with a strong increase of the intergranular pinning strength which is one order of magnitude higher than in similar as-sintered 123 compounds, suggesting possibilities for the critical currents.

The recently discovered [ 1,2 ] new high-temperature superconducting members of the series Hg-