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

IPC: G11C17/00 ,  G11B7/243 ,  G11C13/00 ,  G11C13/04 ,  G11C11/00

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.