title: Spin-canting and magnetic anisotropy in ultrasmall CoFe2O4 nanoparticles.
abstract: The magnetic properties of cobalt ferrite nanoparticles dispersed in a silica matrix in samples with different concentrations (5 and 10 wt% CoFe2O 4) and same particle size (3 nm) were studied by magnetization, DC and AC susceptibility, and Mossbauer spectroscopy measurements. The results indicate that the particles are very weakly interacting. The magnetic properties (saturation magnetization, anisotropy constant, and spin-canting) are discussed in relation to the cation distribution.
authors.affiliation: Istituto di Struttura della Materia-CNR, C.P. 10, 00016 Monterotondo Stazione, Roma, Italy.
authors.forename: D
authors.initials: D
authors.lastname: Peddis
authors.forename: M V
authors.initials: MV
authors.lastname: Mansilla
authors.forename: S
authors.initials: S
authors.lastname: Mørup
authors.forename: C
authors.initials: C
authors.lastname: Cannas
authors.forename: A
authors.initials: A
authors.lastname: Musinu
authors.forename: G
authors.initials: G
authors.lastname: Piccaluga
authors.forename: F
authors.initials: F
authors.lastname: D'Orazio
authors.forename: F
authors.initials: F
authors.lastname: Lucari
authors.forename: D
authors.initials: D
authors.lastname: Fiorani