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We have calculated the magnetic levitation / suspension force
between a superconductor and a permanent magnet and compared
with that of measured data.To calculate the specific matrix flux
density of single grained Y-Ba-Cu-O high temperature
superconductor with equations derived by the Ampere''s current of
electromagnetism, and then used this matrix to solve a series of
multiple equations that result in experimentally trapped
magnetic flux density data, the solution of the matrix
represents the surface and volume current density within the
bulk superconductor at various positions.The levitation /
suspension force can be represented by the interaction force
between these two sets of current (i.e. surface current of
magnet and surface plus volume current of superconductor) at
various gap distance.
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