Abstract
The magnetic properties and recording characteristics of CoCrTaPt/NiFe double-layered perpendicular media have been investigated. Thin CoCrTaPt layered media have high coercivity and good recording performances. CoCrTaPt/CoCrTa/NiFe triple-layered media have higher coercivity than CoCrTa and CoCrTaPt/NiFe media. But the output and media noise of triple-layered media are lower than these of CoCrTaPt/NiFe media. The microstructure invistigations of these media suggest that recording performance might be explained on the basis of intergranular exchange coupling theory.
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