▎ 摘　　要

NOVELTY - A light-element magnetic material comprises magnetic graphene in which chemical structure exhibiting magnetic asymmetry between primary and secondary ends is provided to primary and/or secondary end where the graphene exists. USE - Light-element magnetic material is used for recording media e.g. magnetic tape and hard disk, electrode of lithium ion battery, magnetic polarizing film and magnetic semiconductor device. ADVANTAGE - The light-element magnetic material having high implementability is lightweight, and economically manufactured in high yield. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of light-element magnetic material, which involves generating macromolecular graphene having molecular weight more than target molecular weight, modifying one end of macromolecular graphene as terminal group (B) chosen from methylene group, boron hydride group, aluminum hydride group, silicon hydride group, silicon group, amine group, phosphorus-containing group (PH, PH3) group, oxygen-containing group and sulfur-containing group, crushing the graphene in order to attain target molecular weight, and modifying the other end of crushed graphene as terminal group (A) chosen from hydrocarbon group, silyl group, nitrogen-containing group, phosphorus-containing group and phosphinyl (PH2) group.