title: Synthesis and assembly of barium-doped iron oxide nanoparticles and nanomagnets.
abstract: A facile organic-phase synthesis of monodisperse barium-doped iron oxide (Ba-Fe-O) nanoparticles (NPs) is reported. The Ba-Fe-O NPs can be converted into hexagonal barium ferrite NPs at 700 °C, showing strong ferromagnetic properties with H(c) reaching 5260 Oe and M(s) at 54 emu g(-1). Moreover, the Ba-Fe-O NPs can be assembled into densely packed magnetic arrays, providing a unique model system for studying nanomagnetism and for nanomagnetic applications.
authors.affiliation: Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA. ssun@brown.edu.
authors.forename: Liheng
authors.initials: L
authors.lastname: Wu
authors.forename: Bo
authors.initials: B
authors.lastname: Shen
authors.forename: Shouheng
authors.initials: S
authors.lastname: Sun