Applied Physics and Mathematics Annotation << Back PREPARATION OF NEW MATERIALS WITH CONTROLLABLE MAGNETIC AND ELECTRICAL PROPERTIES AS 3D-NANOCLUSTER ARRAYS OF MULTIFERROIC (TITANATE AND MANGANITE TRANSITION ELEMENTS) BASED OPAL MATRICES А.F. BELYANIN, M.I. SAMOYLOVICH, A.S. BAGDASARIAN, S.A. BAGDASARIAN Formation of nanocomposites based on the lattice packing of SiO2 nanospheres (opal matrices) with clusters of multiferroic (titanate and manganite transition elements) embedded into nanopores between spheres. For the formation of nanocomposites used samples opal matrices with dimensions of single-domain regions >0,1 mm3, diameter SiO2 nanospheres was ~260 nm. Obtained nanocomposites volume >1 cm3 in fi lling 10…40 % of interspherical nanospacing crystalline compounds of multiferroic. The composition and structure of the nanocomposites was studied by electron microscopy, X-ray diffraction and Raman spectroscopy. The dependence of the composition of synthesized materials on the conditions of their preparation are submitted. Results of measurements of the frequency dependences of magnetic and dielectric characteristics of the obtained nanostructures are presented. Hysteresis loops were studied for the obtained samples within a temperature range from 1.8 to 400 K. Keywords: nanocomposites, opal matrix, rare-earth manganite and titanates, iron titanate, magnetic and dielectric properties. Contacts: E-mail: belyanin@cnititm.ru Pp. 22-39.