The ternary phase diagram for In‐Ga‐Sb has been determined experimentally and has been verified by calculation. Liquidus compositions are measured along several isotherms together with several solidus compositions on the pseudobinary phase diagram. For the calculation both liquid and solid are assumed to be nonideal. The activity coefficients are calculated using a model with temperature dependent interaction parameters.
We discuss here some of the basic issues involved in the development of an optical storage medium based on the laser micromachining of thin tellurium films. Results are presented in the areas of recording sensitivity, materials resolution, error statistics, and archival stability. It is shown that a medium using 20–30 nm of tellurium deposited on polymethyl methacrylate substrates is an extremely attractive choice.
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