title: Enhanced exchange-coupling effect in Nd-Fe-B/Fe-B nanocomposite magnet.
abstract: Soft phase magnetic Fe-B nanoparticles were prepared by coprecipitation and the hard phase magnetic Nd-Fe-B nanoparticles were obtained from mechanical ball mill of the bulk Nd-Fe-B with a shaker mill. Also mechanical ball mill technique was applied to the mixture of Nd-Fe-B and Fe-B nanoparticles to build up an exchange-coupled nanocomposite magnet. It was loaded in electronic furnace and annealed under a flow of hydrogen at 953 K for 30 min. The exchange coupled interaction of isotropic magnets was characterized by smooth hysteresis loop with a high value of remanence (Mr/Ms > 0.5).
authors.affiliation: Department of Chemistry, Sogang University Seoul 121-742, South Korea.
authors.forename: Hyungil
authors.initials: H
authors.lastname: Cha
authors.forename: Changwoo
authors.initials: C
authors.lastname: Kim
authors.forename: Eunsun
authors.initials: E
authors.lastname: Ji
authors.forename: Younghwan
authors.initials: Y
authors.lastname: Kim
authors.forename: Abhijit
authors.initials: A
authors.lastname: Jadhav
authors.forename: Dongin
authors.initials: D
authors.lastname: Kang
authors.forename: Youngsoo
authors.initials: Y
authors.lastname: Kang