The garnet, LuxSm3−xFe5O1 2, with x ranging from 1.5 to 1.9, has been expitaxially grown on gadolinium gallium garnet substrates by conventional LPE dipping techniques. This range of compositions has q≳1 and supports submicron diameter magnetic bubbles. For a x=1.8 composition the coercivity, Hc, is 0.05 Oe and the anisotropy field, Hk, is 4360. The wall mobility, μ, was measured by bubble translation and is 192 cm/sec‐Oe for a x=1.5 composition. Uniform skewing but no hard bubble behavior was observed in the bubble translational studies. Magnetic bubble T‐bar permalloy circuits have been fabricated by E‐Beam patterning and electroplating on these films. Quasistatic bubble propagation has been observed for 0.8 μm diameter bubbles at a drive field of 100 Oe.