Magnetic Recording Technology

This lecture covers the evolution of hard disk recording technology, starting from the historical origins of magnetism to the current advancements in magnetic media. It explains the connection between magnetism and electricity, the concept of magnetic fields, and the types of ferromagnetic materials. The lecture also delves into the explosion of information storage, the information storage hierarchy, and the fabrication and functioning of inductive, magnetoresistive, and giant magnetoresistive heads.