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IMPROVED SIGNAL MAGNITUDE, FOCUS AND TRACKING CHARACTERISTICS IN MAGNETO-OPTIC MEDIA

IP.com Disclosure Number: IPCOM000024957D
Original Publication Date: 1983-Feb-28
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal

Abstract

An enhancement in the magnitude of the signal produced from a thin magneto-optic (MO) medium can be obtained by the addition of a thin overlayer of tellurium or tellurium alloy as shown in Figure 1. For simplicity, a single layer medium is disclosed although the enhancement to be described may be applied to multilayer structures, e.g., quadrilayers that provide interference enhancement. The MO medium 10 comprises a suitable substrate 12, such as aluminum or plastic having a reflecting surface. The magnetic media layer 14 is deposited on substrate 12 followed by thin tellurium or tellurium alloy overlayer 16. As an exapple, layer 14 may be in the range of 5 to 100 nm while overlayer 16 may about 100A.