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

Abstract

Magnetically uniaxial epitaxial films of Eu2Er1Ga0.7Fe4.3O12 and Er2Eu1Ga0.7Fe4.3O12 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.