Magnetic material and production method thereof
AssigneeDowa Mining Co., Ltd.
InventorsAkira Nagatomi, Fumikazu Kanamaru, Shinichi Kikkawa
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Abstract
A magnetic material made up of an assembly of particles substantially consisting of an α″-Fe16N2 crystal having a body-centered tetragonal system (bct). The magnetic material has a high saturated magnetic flux density and is directly synthesized by reacting fine particles of α-Fe and a nitrogen-containing gas at a temperature of 200° C. or lower. By the synthesis of this invention, α″-Fe16N2, which is a metastable compound conventionally deposited accompanied with phase transformation of crystallization from a martensite phase of α′-Fe(N), is obtained as an isolated bulk substance in a single phase.
Claims2
A method of producing an iron nitride magnetic material, which comprises reacting fine particles of α-Fe and a nitrogen-containing gas at a temperature of not higher than 200° C. to directly synthesize an α″-Fe16N2 crystal having a body centered tetragonal system (bct).
Dependencies are inferred from the claim text.