CUED Publications database

Trapped Field Enhancement of a Thin, High-Jc MgB2 Bulk Without Flux Jumps Using Pulsed Field Magnetization with a Split-Type Coil with a Soft Iron Yoke

Fujishiro, H and Takahashi, K and Ainslie, MD and Mochizuki, H and Naito, T (2017) Trapped Field Enhancement of a Thin, High-Jc MgB2 Bulk Without Flux Jumps Using Pulsed Field Magnetization with a Split-Type Coil with a Soft Iron Yoke. IEEE Transactions on Applied Superconductivity, 27. ISSN 1051-8223

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Abstract

© 2002-2011 IEEE. We have investigated the suppression of flux jumps and the enhancement of trapped field on a thin, high-J c MgB 2 bulk (30 mm in diameter and 7 mm in thickness) for the pulsed field magnetization (PFM) using a split-type coil with a soft iron yoke, and compared the results to those magnetized using the split-type coil without a yoke and a solenoid-type coil with a yoke. A maximum-trapped field, B z , of 0.71 T at 14 K was achieved on the bulk surface without flux jumps by using the split coil with yoke. On the other hand, low B z values with flux jumps were observed for the cases using the split-type coil without a soft iron yoke, and the solenoid-type coil with a yoke. These results reproduce previous ones for a thick, high-J c MgB 2 bulk (22 mm in diameter and 15 mm in thickness), for which the trapped field was enhanced to a record high value of B z = 1.10 T at 13 K by PFM using the split-type coil with a yoke.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div C > Materials Engineering
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:11
Last Modified: 23 Nov 2017 03:41
DOI: