title: Preparation of a vast CoFe2O4 magnetic monolayer by Langmuir-Blodgett technique.
abstract: The preparation of ultrathin films of CoFe2O4 nanocrystallites is reported. TEM images of them showed 2-dimensional assembly of particles, demonstrating the uniformity of these nanocrystallites. The formation of a Langmuir monolayer of the surface coated CoFe2O4 nanocrystallites with oleate at the air/water interface and its stability were studied with pressure-area isotherm curves and Brewster Angle Microscope (BAM) images. Surface pressure vs surface area isotherms and TEM studies demonstrated that the increasing surface pressure resulted in a transition from a complex with well-separated domains of nanocrystallites to well-compressed, monoparticulate layers, and, ultimately, to multiparticulate layers.
authors.affiliation: Department of Chemistry, Pukyong National University, 599-1 Daeyeon-3-dong, Nam-gu, Pusan 608-737, South Korea.
authors.forename: Don Keun
authors.initials: DK
authors.lastname: Lee
authors.forename: Young Hwan
authors.initials: YH
authors.lastname: Kim
authors.forename: Young Soo
authors.initials: YS
authors.lastname: Kang
authors.forename: Pieter
authors.initials: P
authors.lastname: Stroeve