LIQUID PHASE EPITAXIAL GROWTH OF UNIAXIAL GARNET FILMS; CIRCUIT DEPOSITION AND BUBBLE PROPAGATION

Abstract

Magnetically uniaxial epitaxial films of Eu₂Er₁Ga_0.7Fe_4.3O₁₂ and Er₂Eu₁Ga_0.7Fe_4.3O₁₂ 5–20 μm thick have been grown free of cracks from PbO · B₂O₃ solutions on (110) and (111) Gd₃Ga₅O₁₂ substrates, respectively. Bubble propagating T‐bar and Y‐bar circuits of nickel‐cobalt‐phosphorus were electrolessly deposited on these films. Operation in excess of 100 steps has been achieved in T‐bar and Y‐bar bubble domain shift registers. Details of the growth procedure, magnetic properties, and circuit preparation are presented.