CORE-SHELL PARTICLE, FIRED PRODUCT OF CORE-SHELL PARTICLE, MANUFACTURING METHOD OF CORE-SHELL PARTICLE, EPSILON TYPE IRON OXIDE-BASED COMPOUND PARTICLE, MANUFACTURING METHOD OF EPSILON TYPE IRON OXIDE-BASED COMPOUND PARTICLE, MAGNETIC RECORDING MEDIUM, AND MANUFACTURING METHOD OF MAGNETIC RECORDING MEDIUM

摘要

The invention provides a core-shell particle which can provide, by being calcinated, epsilon type iron oxide-based compound particles that have a small coefficient of variation of primary particle diameter and show excellent SNR and running durability when employed in a magnetic recording medium as well as applications thereof. The core-shell particle includes: a core including at least one iron oxide selected from Fe₂O₃ or Fe₃O₄, or iron oxyhydroxide; and a shell that coats the core, the shell including a polycondensate of a metal alkoxide and a metal element other than iron, as well as applications thereof.