AN ALTERNATING METAL AND ALLOY LAYER STRUCTURE AS A DATA-STORAGE MEDIUM FOR COMPLEX-LOGIC TIME-PROGRAMMABLE DEVICES

A structure of alternating layers of copper and a tin-copper alloy dep osited from a single electrolyte is shown to be a promising data-stora ge medium for complex-logic time-programmable devices. Conditions are defined for the deposition of an almost unlimited number of metal laye rs having the desired electrochemical properties. The electrochemical behavior of the layers is found to be independent of their thickness, and this permits one to ensure a predetermined sequence of time delays that significantly differ in duration.