OPTICAL RECORDING MEDIUM AND ITS PRODUCTION

PROBLEM TO BE SOLVED: To enhance recording and reproducing charctcteristics at a high linear velocity by successively forming a 1st recording film comprising a nitrogen- containing phase change material, a 2nd recording film comprising an oxygen- containing phase change material and a 3rd recording...

Full description

Saved in:
Bibliographic Details
Main Authors ABIKO TORU, SAITOU YOSHIHIRO
Format Patent
LanguageEnglish
Published 04.08.2000
Edition7
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To enhance recording and reproducing charctcteristics at a high linear velocity by successively forming a 1st recording film comprising a nitrogen- containing phase change material, a 2nd recording film comprising an oxygen- containing phase change material and a 3rd recording film comprising a nitrogen-containing phase change material. SOLUTION: A 1st dielectric layer 3 is formed on the surface of a substrate 2, comprising polycarbonete or the like by depositing ZnS-SiO2 or the like through sputtering. A 1st magnetic film 4a is formed on the 1st dielectric layer 3 by depositing a Ge-Sb-Te or Ag-In-Sb-Te phase change material. A 2nd recording film 4b comprising a Ge-Sb-Te phase change material, a 3rd recording film 4c comprising a Ge-Sb-Te or Ag-In-Sb-Te phase change material, a 2nd dielectric layer 5 comprising ZnS-SiO2, a heat diffusion layer 6 and a protective coat 7 are then successively formed to obtain an optical disk 1.
Bibliography:Application Number: JP19990014520