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公开(公告)号:FR2284163A1
公开(公告)日:1976-04-02
申请号:FR7521492
申请日:1975-07-04
Applicant: IBM
Inventor: GAMBINO RICHARD J , HOLTZBERG FREDERIC , RUF RALPH R , WELBER BENJAMIN
Abstract: 1496029 Vapour depositing data storage layers INTERNATIONAL BUSINESS MACHINES CORP 8 Aug 1975 [9 Sept 1974] 33108/75 Heading C7F A digital data storage device for recording information by a laser beam comprises two layers which react with each other when subjected to the beam and a barrier layer which prevents reaction of the two layers in the absence of the beam. The reactive materials may be Al-Se, Zn-Se, Bi-Se, As-Se, Mn-Bi, (In-Ga)-As, and the barrier layer Al 2 Se 3 , Al 2 O 3 , ZnSe, BiSe 3 , As 2 Se 3 , MnBi, Ga 1-x In x As. The layers may be vapour deposited on a glass or plastics substrate and the compounds formed by co-evaporation.