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Abstract

A prototype of a superconducting linear bearing has been successfully developed. The superconducting linear bearing consists of a high-T_c superconductor shaft (type-II superconductor) and a cylindrical housing of alternating-polarity bar magnets of the same size. By using the alternating-polarity magnets the superconductor shaft can be levitated in the center of the housing with no contacts. Levitation properties of the superconducting linear bearing are investigated. The levitation force shows circular hysteresis loops depending on the displacement amplitude because of the flux pinning effect. The circular hysteresis loops of the levitation force are explained by using simple mechanisms for the superconducting linear bearing. Due to the simple structure of the superconducting linear bearing it is applicable to practical apparatuses in industrial fields.

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Lévitation Forces in a Superconducting Linear Bearing

Abstract

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References