Critical current limiting factors of hot isostatically pressed (HIPed) PbMo6S8 wires

Article Article scientifique Article Critical current limiting factors of hot isostatically pressed (HIPed) PbMo6S8 wires eng 1995 author Seeber Bernd 26343 author Erbuke Levent 27322 author Schroeter Vladan 23770 author Perenboom J.A.A. author Grill R. 1205-1208 10.1109/77.402778 1051-8223 http://ieeexplore.ieee.org/document/402778/ PbMo₆S₈ wires with a molybdenum barrier and a stainless steel matrix were hot isostatically pressed (HIP) at 990 °C and 1225 °C for 4 hours at 110 MPa. The critical current density, its distribution, as well as the ac-susceptibility were investigated. The higher the applied HIP temperature, the better the critical current density becomes. A comparison of inductive Tc transitions suggests that HIPing is able to considerably reduce the width of the transition. In addition, at 1225 °C, the Tc onset is shifted from 12.4 K to 14.2 K. The high field behavior of Jc strongly depends on the effective upper critical field which is essentially determined by grain boundaries. In a degraded wire sample, a qualitative correlation between effective upper critical field and the width of the inductive transition was found. This knowledge should allow to overcome the apparent limitation of Jc at high fields (2x10⁸ Am⁻² and 3x10⁸ Am⁻² at 20 T, 4.2 K and 1.8 K, respectively). Dewey 500.2 35 Groupe de physique appliquée 135 false IEEE Transactions on Applied Superconductivity 5 2 d5ebc0ae-d37c-4d4d-98bf-25657f00dd7b Article (Published version) Restricted 00402778.pdf 436561 application/pdf restrictedAccess Faculté des sciences / Section de physique / Groupe de physique appliquée

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Critical current limiting factors of hot isostatically pressed (HIPed) PbMo₆S₈ wires	IEEE Transactions on Applied Superconductivity			1995	436	0

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