Cloaking the Static Magnetic Fields by Alternate Superconductor-Ferromagnet Heterostructure
The novel concept to well cloak the incident static magnetic fields by a heterostructure made of a superconductor (SC) and a ferromagnet (FM) has been proposed and verified recently. The performance of such heterostructure strongly depends on the involved materials and its geometrical configurations...
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Published in | IEEE transactions on applied superconductivity Vol. 26; no. 4; pp. 1 - 5 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
New York
IEEE
01.06.2016
The Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subjects | |
Online Access | Get full text |
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Summary: | The novel concept to well cloak the incident static magnetic fields by a heterostructure made of a superconductor (SC) and a ferromagnet (FM) has been proposed and verified recently. The performance of such heterostructure strongly depends on the involved materials and its geometrical configurations. We designed and built a practical version of a cylindrical multilayer cloak wound by an alternate SC-FM heterostructure that consists of a coated superconductor and a 1Cr17 ferromagnetic alloy. The cloaking properties of such hybrid against the static magnetic field generated by a Helmholtz coil were measured to verify the related finite-element model, in which the SC constituent is postulated as a diamagnet with relative permeability of less than 1. Using the verified model, we further carried out a set of finite-element simulations with experimentally derived permeability of both the SC and FM constituents to observe the dependence of the cloaking effect as well as the shielding efficiency of the SC-FM heterostructure on its geometry. The obtained characteristics of the magnetic cloaking of the SC-FM hybrid may offer a new paradigm for its applications in the military and medical devices. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1051-8223 1558-2515 |
DOI: | 10.1109/TASC.2016.2527686 |