公开(公告)号：DE2536264A1

公开(公告)日：1976-03-18

申请号：DE2536264

申请日：1975-08-14

Applicant: IBM

Inventor： GAMBINO RICHARD JOSEPH ,  HOLTZBERG FREDERIC ,  RUF RALPH RICHARD ,  WELBER BENJAMIN

IPC: G11C17/00 ,  G11B7/243 ,  G11C13/00 ,  G11C13/04 ,  G11B11/12 ,  G03C1/72

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.

公开(公告)号：DE3266104D1

公开(公告)日：1985-10-17

申请号：DE3266104

申请日：1982-03-09

Applicant: IBM

Inventor： GAMBINO RICHARD JOSEPH ,  RUF RALPH RICHARD

IPC: H01L37/04 ,  H02N11/00 ,  H02K57/00

Abstract: A hollow cylindrical permanent magnet 43 has an axial stainless steel core 38 surrounded by a coil 50. The core interior contains LaCO5 particles, to which hydrogen gas can be supplied from tube 81, the gas exhausting via tube 82. The core also has a coolant pipe 39. The lanthanum cobalt is rapidly reversibly cycled through a hydride phase by controlling the hydrogen supply to and from the core interior, possibly also with cyclic temperature control, so that its magnetic reluctance is varied which causes an alternating emf to arise in the coil 50.