Abstract
Rare-earth–transition-metal thin films are extensively studied as materials for erasable magnetooptical (MO) data storage media. MO Kerr effects can be enhanced by interference effects using multilayer designs. The optical constants n and k are required for the design of multilayer structures, but little data exist for MO materials. We have developed a method to measure the constants using the surface plasmon resonance phenomenon. We measured the constants of TbFe films deposited by rf sputtering. The accuracy estimation was about ±0.005 and could be as good as ±0.001 for optimum conditions.
© 1989 Optical Society of America
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