Effects of pixel groove depth and patterned permalloy assist film for the magnetization switching of LPE-garnet film were studied experimentally. The results showed that the magnetization field to switch a structured pixel could be reduced by controlling the pixel groove depth. It was also found that the permalloy assist film creates a unique pair-domain pattern within a single garnet pixel, which is useful for realizing a new type of magneto-optic spatial light modulator with high resistivity to noise.
Nanoparticles of metallic cobalt and cobalt-platinum alloy have been synthesised via ion implantation and thermal annealing. The size and spatial distributions of the resulting nanoparticles were investigated as a function of annealing temperature, for temperatures up to 900oC, and correlated with their magneticproperties.
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