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Method of forming a data storage medium and data storage device by congruent sublimation

  • US 4,621,032 A
  • Filed: 07/29/1985
  • Issued: 11/04/1986
  • Est. Priority Date: 07/29/1985
  • Status: Expired due to Term
First Claim
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1. A method of depositing a multi-component, phase changeable, chalcogenide material onto a substrate, comprising the steps of:

  • a. providing in a vacuum deposition means a substantially non-convecting, multi-component, congruently vaporizing chalcogenide first source;

    b. converting the first source to a non-condensed state having substantial source/non-condensed state compositional equivalence; and

    c. depositing material from the non-condensed state onto the substrate to form a deposit having substantial non-condensed state/deposit compositional equivalence and the substantial absence of concentration gradients.

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