Fundamentals of modeling I-bars and bubbles using fourier series

A Fourier series method is described for the calculation of the response of periodic arrays of I-bars to applied fields and bubbles. The underlying assumptions are emphasized for the exact solution of Poisson´s equation with an approximate constitutive equation. A general formulation is given for bubble-bar magnetostatic energy, the components of which are tabulated systematically. Results are given as comparisons with other investigators for calculated and measured potential wells and the variation of well with spacing, with applied field, and with bubble radius. Bubble-bubble interaction is treated.