Abstract
Theoretical and experimental investigations have been performed on chain formation of magnetic beads in the magnetic field. It is assumed that the chain length is determined as the length when the total (magnetic and kinetic) potential energy of the chain is the minimum. Calculated chain length under this assumption agreed fairly well with the experimental observations that the length was increased in high magnetic field but it was not affected by the bead diameter. Effect of friction and mode of the chain will be considered to improve the model.
