title: Colloidal synthesis and characterization of tetrapod-shaped magnetic nanocrystals.
abstract: Tetrapod-shaped maghemite nanocrystals are synthesized by manipulating the decomposition of iron pentacarbonyl in a ternary surfactant mixture under mild thermal conditions. Adjustment of the reaction parameters allows for the systematic tuning of both the width and the length of the tetrapod arms, which grow preferentially along the 111 easy axis direction. Such degree of control leads to modulation of the magnetic behavior of the nanocrystals, which evolves systematically as their surface magnetization phase and shape anisotropy are progressively increased.
authors.affiliation: National Nanotechnology Laboratory of CNR-INFM, Unità di Ricerca IIT, Distretto Tecnologico ISUFI, via per Arnesano km 5, 73100 Lecce, Italy. davide.cozzoli@unile.it
authors.forename: P Davide
authors.initials: PD
authors.lastname: Cozzoli
authors.forename: Etienne
authors.initials: E
authors.lastname: Snoeck
authors.forename: Miguel Angel
authors.initials: MA
authors.lastname: Garcia
authors.forename: Cinzia
authors.initials: C
authors.lastname: Giannini
authors.forename: Antonietta
authors.initials: A
authors.lastname: Guagliardi
authors.forename: Antonio
authors.initials: A
authors.lastname: Cervellino
authors.forename: Fabia
authors.initials: F
authors.lastname: Gozzo
authors.forename: Antonio
authors.initials: A
authors.lastname: Hernando
authors.forename: Klaus
authors.initials: K
authors.lastname: Achterhold
authors.forename: Nelica
authors.initials: N
authors.lastname: Ciobanu
authors.forename: Fritz G
authors.initials: FG
authors.lastname: Parak
authors.forename: Roberto
authors.initials: R
authors.lastname: Cingolani
authors.forename: Liberato
authors.initials: L
authors.lastname: Manna
mesh_terms: D016880:Anisotropy; D003102:Colloids / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D005290:Ferric Compounds / Q000737:chemistry*; D054354:Iron Carbonyl Compounds; D008280:Magnetics; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D009942:Organometallic Compounds / Q000737:chemistry*; D010316:Particle Size; D013499:Surface Properties
chemical_list: D003102:Colloids; D005290:Ferric Compounds; D009942:Organometallic Compounds; D054354:Iron Carbonyl Compounds; C000499:ferric oxide