Magnetic Recording Technologies: Overview and Components

This lecture introduces magnetic recording technologies, covering the overview on magnetic recording, the recording medium, stability criteria of storage grains, the read/write head, and the composition and physics of read heads. It explains the concepts of storing data using soft and hard magnetic materials, increasing storage densities, and the emergence of spintronics. The lecture also discusses the components and principles of magnetic disc recording, the exploitation of soft and hard magnetic materials, and the use of high-moment magnetic materials for writing. It delves into the evolution of disc recording, advancements in magnetic recording technology, and the fabrication techniques for creating magnetic thin and ultra-thin films and nanostructures.