Production of magnetic recording medium

Abstract

Abstract PURPOSE:To improve a reproduced output and recording density by using a gaseous mixture composed of gaseous Ar and gaseous oxygen at the time of forming an underlying film of Cr. CONSTITUTION:The underlying film of the Cr is formed by using the gaseous mixture composed of the gaseous Ar and the gaseous oxygen as an atmosphere at the time of producing the magnetic recording medium formed with the underlying film and magnetic film consisting of CoCrTa or CoNiCr by a sputtering method on a substrate. The magnetic film thereof is formed by using the gaseous Ar as the atmosphere. Namely, the gaseous oxygen in addition to the gaseous Ar of the prior art exist at the time of the formation of the underlying film, by which the quality and structure of the underlying film are changed and the quality and structure of the magnetic film to be formed next are eventually influenced. The magnetic characteristics are improved in this way.

Inventors

• 👤 Hideki Tamai
• 👤 秀樹 玉井
• 👤 Fujio Suzuki
• 👤 富士夫 鈴木

Bibliographic Details