Magnetic Characteristics of Oxide Superconductors for the Application of Running Systems with Magnetic Levitation

Abstract

We have constructed a model vehicle, which runs without contact to its magnetic rail, using oxide superconductors. The present paper describes the forces acting between the superconductor and the rail for such a purpose. The attractive and repulsive forces were measured at 77K as a function of distance between the superconducting pellet and the magnetic rail. As superconducting pellets, three kinds of materials MPMG-Y123, BiPb2223, and Hg1223 were investigated for three kinds of permanent magnets Nd-Fe-B, Sm-Co and ferrite.