Nanocomposite RE-Ba-Cu-O bulk superconductors

TL;DR

This paper discusses the development and enhancement of nanocomposite RE-Ba-Cu-O bulk superconductors, highlighting their potential as quasi-magnets for various applications due to recent material processing advances.

Contribution

It introduces techniques to improve magnetic properties of bulk superconductors and provides foundational knowledge on phase diagrams and solidification processes.

Findings

Achieved 17.6 T magnetic field at 26 K with 26 mm diameter superconductor

Demonstrated applications in levitation, motors, and magnetic resonance microscopy

Reviewed methods to enhance magnetic performance of bulk superconductors

Abstract

Nanocomposite oxide high-temperature bulk superconductors can be used as quasi-magnets. Thanks to the recent progress of material processing, quasi-magnet with 26 mm diameter can generate a large field of 17.6 T at 26 K. These results are highly attractive for applications, involving levitation of permanent magnets on the bulk superconductors. Indeed, several other applications such as motors and magnetic resonance microscope using bulk superconductors have been proposed and demonstrated. In this chapter, we describe several techniques to improve the magnetic properties for bulk superconductors together with some basics such as phase diagrams and solidifications.