TbFeCo/DyFeCo Exchange-Coupled Double-Layered Magneto-optical Films

• Main Authors: Kuo-Hsien Shyu, 徐國賢
• Other Authors: Shieh Han Ping
• Format: Others
• Language: zh-TW
• Published: 1994
• Online Access: http://ndltd.ncl.edu.tw/handle/16875281778378508138

碩士 === 國立交通大學 === 光電(科學)研究所 === 82 === TbFeCo/DyFeCo exchange-coupled double-layered magneto-optical films were prepared and characterized to study the possibility of reducing bias field strength during thermomagnetic recording. In this coupled films,the TbFeCo layer of fixed composition was capped with the DyFeCo layer of various composition.The recording behavior of this coupled films were investigated as a function of DyFeCo composition. We found that the insertion of a proper capping layer of DyFeCo alloy film in direct contact to the recording layer of TbFeCo alloy film reduces the bias field substantially.The DyFeCo capping layer acts as a external field enhancing layer through exchange coupling with TbFeCo recording layer.This coupled films are hopeful candidates for field modulation overwriting media in magneto-optical recording.