title: Intermetallic magnetic nanoparticle precipitation by femtosecond laser fragmentation in liquid.
abstract: Intermetallic Nd(2)Fe(14)B nanoparticles with an average diameter of 30 nm, which are smaller than a theoretical single magnetic domain size of 220 nm, were successfully prepared by the femtosecond laser fragmentation in liquid. The self-passivating amorphous carbon layer resulting from the decomposition of the surrounding solvent prevents the Nd(2)Fe(14)B nanoparticle from aggregation and oxidation. The coercivity of Nd(2)Fe(14)B nanoparticle increases with increase of the laser irradiation time, despite the reduction of crystallinity.
authors.affiliation: Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Yamamoto
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Shimotsuma
authors.forename: Masaaki
authors.initials: M
authors.lastname: Sakakura
authors.forename: Masayuki
authors.initials: M
authors.lastname: Nishi
authors.forename: Kiyotaka
authors.initials: K
authors.lastname: Miura
authors.forename: Kazuyuki
authors.initials: K
authors.lastname: Hirao