High Critical Current Density in the Textured Nanofiber Structure in Multifilament MgB2 Wires Made by the Powder-In-Tube (PIT) Technique

Autor:	Daniel Gajda, Andrzej J. Zaleski, Andrzej J. Morawski, Małgorzata Małecka, Lan Maria Tran, Matt Rindfleisch, Tomasz Durejko, Tomasz Czujko
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	textured nanofiber MgB2 wires high critical current density powder-in-tube method Technology Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Zdroj:	Materials, Vol 15, Iss 15, p 5419 (2022)
Druh dokumentu:	article
ISSN:	1996-1944
DOI:	10.3390/ma15155419
Popis:	We show that the structure of multifilament MgB2 wires made by the powder-in-tube (PIT) method can be texturized by annealing the structure under high isostatic pressure. Our results show that we obtained continuous fibers with a uniform diameter of 250 nm in all 36 filaments, a small grain size of approximately 50 nm and a high density of the superconducting material. These results contribute to a significant improvement in the critical current density in high magnetic fields, e.g., 100 A/mm2 at 14 T and 4.2 K.
Databáze:	Directory of Open Access Journals
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