Transportation of Static Magnetic Fields by a practically realizable Magnetic Hose

TL;DR

This paper presents a practical magnetic hose capable of transferring static magnetic fields efficiently, demonstrating over 50% transfer efficiency, with potential applications in magnetic circuits and shielding.

Contribution

It introduces a realizable magnetic hose using a ferromagnetic and superconductor heterostructure, linking theoretical models with experimental validation.

Findings

Transfer efficiency exceeds 50% in the best demonstrator.

Efficiency depends on the inner cylinder diameter.

Finite-element simulations clarify the underlying transfer mechanisms.

Abstract

A practically realizable magnetic hose, constructed by wrapping a ferromagnetic cylinder with alternate superconductor-ferromagnet heterostructure, was developed and its capability to transfer the static magnetic fields, e.g., generated by an Nd-Fe-B magnet, was examined in this letter. A diverse dependence of the transfer efficiency on the diameter of the inner cylinder was found in the magnetic hose demonstrators and the underlying cause was clarified by the finite-element simulations. Transfer efficiency of over 50% in terms of a moderate field has been achieved in the best demonstrator of this study, even with a thin sheet merely having moderate magnetism to embody the ferromagnet in the heterostructure. This work links the theoretically derived model with a physical reality and may also conceive fantastic solutions to form a magnetic circuit with minimum leakage or to create a magnetically shielded space, both of which are deemed promising in most electromagnetic devices.