title: Magnetic characterization of microscopic particles by MO-SNOM.
abstract: This paper reports on the development of a magneto-optical scanning near-field optical microscope and the experimental near-field study of the domain structure for a model magnetic particle of 16 x 16 micro m(2) of a Co(70.4)Fe(4.6)Si(15)B(10) amorphous thin film, deposited on a silicon substrate. We present the topographic, optical and magneto-optical differential susceptibility (MODS) images of the particle. Imaging by using the local MODS reveals the domain structure. These images are also used for positioning the tip in order to acquire local hysteresis loops, with submicrometre spatial resolution.
authors.affiliation: Instituto de Física da Universidade de São Paulo, CP 66318, ZIP 05315-970, São Paulo, Brazil. jeroen@macbeth.if.usp.br
authors.forename: J
authors.initials: J
authors.lastname: Schoenmaker
authors.forename: M S
authors.initials: MS
authors.lastname: Lancarotte
authors.forename: A C
authors.initials: AC
authors.lastname: Seabra
authors.forename: Y
authors.initials: Y
authors.lastname: Souche
authors.forename: A D
authors.initials: AD
authors.lastname: Santos
mesh_terms: D001895:Boron / Q000737:chemistry; D003035:Cobalt / Q000737:chemistry; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D007501:Iron / Q000737:chemistry; D008280:Magnetics; D008855:Microscopy, Electron, Scanning / Q000295:instrumentation* / Q000379:methods*; D055095:Optics and Photonics / Q000295:instrumentation; D012825:Silicon / Q000737:chemistry
chemical_list: D003035:Cobalt; D007501:Iron; D001895:Boron; D012825:Silicon