title: Preparation of magnetic nano-composite: barium hexaferrite loaded in the ordered meso-porous silica matrix (MCM-41).
abstract: In this work a magnetic nano-composite was synthesized by modified incorporation of iron-barium complex into ordered meso-porous silica (MCM-41) as a matrix. The MCM-41 was synthesized by silylation treatment which was accompanied by pH adjusting. Low angle XRD patterns of both annealed MCM-41 and resulted composite exhibited the characteristic reflection of high quality hexagonal meso-structures. TEM image of the composite material revealed that the hexagonal ordered meso-structure host material was not affected by wet impregnation and subsequent calcination in order to incorporate with barium hexaferrite. Also, TEM images accompanied by EDS analysis confirmed the formation of second phase consists of barium and iron ions inside the MCM-41 channels. The resulted composite material showed a super-paramagnetic nature at room temperature.
authors.affiliation: Department of Materials, Faculty of Engineering, University of Semnan, Semnan 3513119111, Iran.
authors.forename: H R
authors.initials: HR
authors.lastname: Emamian
authors.forename: A
authors.initials: A
authors.lastname: Honarbakhsh-Raouf
authors.forename: A
authors.initials: A
authors.lastname: Ataie