Ernesto Marinero, Takao Suzuki
Angewandte Chemie International Edition in English
A new technique to improve the morphology of sputter-deposited bismuth garnet films for optical storage is discussed. This technique employs high ramp-up rate annealing in a nitrogen atmosphere, which leads to a smaller grain size and smoother surface than a conventional oven annealing or in situ crystallization process during film growth. By utilizing this technique, the films can be successfully crystallized to the grain size of about 200-300 Å, and a high coercivity (≳kOe). Multilayer films of garnets with other additions such as Cr and SiOx are also discussed. These multilayer films can provide better morphology and high coercivity.
Ernesto Marinero, Takao Suzuki
Angewandte Chemie International Edition in English
Takao Suzuki, Harris Notarys, et al.
IEEE Transactions on Magnetics
Takao Suzuki
Scripta Metallurgica et Materiala
Ernesto Marinerom, Takao Suzuki
Advanced Materials