CUED Publications database

A comparison of 0°-0° and 45°-45° bridge-seeded, YBCO single grains

Shi, Y and Durrell, JH and Dennis, AR and Zhang, Z and Zhai, W and Hari Babu, N and Cardwell, DA (2013) A comparison of 0°-0° and 45°-45° bridge-seeded, YBCO single grains. Journal of the American Ceramic Society, 96. pp. 1757-1762. ISSN 0002-7820

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Abstract

A variety of multiseeding techniques have been investigated over the past 20 yr in an attempt to enlarge bulk (RE)BCO superconducting samples fabricated by the top-seeded melt growth (TSMG) process for practical applications. Unfortunately, these studies have failed to establish whether technically useful values of trapped field can be achieved in multiseeded bulk samples. In this work specially designed, 0°-0° and 45°-45° bridge seeds of different lengths have been employed to produce improved alignment of the seeds during the TSMG process. The ability of these bridge-seeded samples to trap magnetic field, which is the key superconducting property for practical applications of bulk (RE)BCO, is compared for the samples seeded using 0°-0° and 45°-45° bridge seeds of different lengths. The grain boundaries produced by these bridge seeds are analyzed in detail, and the similarities and differences between the two bridge-seeding processes are discussed. © 2013 The American Ceramic Society.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div C > Materials Engineering
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:28
Last Modified: 08 Dec 2014 02:18
DOI: 10.1111/jace.12350