MAGNETIC RECORDING DEVICE

摘要

PURPOSE: A magnetic recording device is provided to add Zr to a FePt thin film used as an information storage unit, so as to improve an information storage density. And the device is provided to increase a coersive force and prevent the increase of a crystal size upon heat treatment of the FePt thin film. CONSTITUTION: An information recording medium has an information recording unit for recording information and an information storage unit in which information is magnetically recorded by the information recording unit. The information storage unit includes a FePt-Zr thin film layer. In the information storage unit, a substrate is arranged. A FePt-Zr magnetic layer is formed on an upper surface of the substrate. A protective layer is formed on an upper part of the FePt-Zr magnetic layer. A buffer layer is interposed between the substrate and the FePt-Zr magnetic layer. And the protective layer is an oxidation preventing layer for preventing the oxidation of the FePt-Zr magnetic layer and is a lubricating layer for reducing the friction with the information recording unit upon contact.