Patent ID: 7455714

Claim:
A method of producing a powder of fine alloy particles having an uneven surface which is a method for producing a powder of an alloy containing T and M in a composition ratio represented by the formula [T X M 1−x ], where T is one or two or more of the elements Fe, Co and Ni, M is one or two or more of the elements Pt, Pd and Ru, X represents a numerical value in the range 0.1-0.9, the method comprising the steps of: dissolving metal salts containing the T component and the M component in a solution of polyhydric alcohol and/or a derivative thereof with a boiling point of 100° C. or greater such that no solids remain, and heating the solution in an inert gas atmosphere at a temperature of 100° C. or greater and 250° C. or less to reduce the metal salts with the polyhydric alcohol and/or derivative thereof, wherein a solution heat up rate to the temperature of 100° C. or greater and 250° C. or less is 0.5 ° C./minute or more and less than 15° C./min, thereby synthesizing a powder of alloy particles such that under TEM observation, a plurality of protruding points is observed on the surface of the particles and indentations are observed between the protruding points.