Ε- coercivity iron oxide type and a method for improving iron oxide type ε-

The present invention provides an e- type iron oxide particles and a method for improving the coercivity e- type iron oxide. A method of increasing the coercivity of the Fe-site substitution provides e- bit D-type iron oxide and the iron oxide Fe type e- with other elements not e- type iron oxide and other elements of the substituted type oxidation e- iron.