Formation of Hexagonal Ferrite Particles from the Disordered Fe2O3-BaO-B2-O3 System

Magnetic properties of the ternary oxide glasses, Li2O-B2 O3-Fe2O3 from 57Fe Mössbauer spectroscopy

2014 57Fe Mössbauer spectroscopy has been combined with bulk magnetic measurements to determine the valence state and coordination of iron as well as the magnetic properties of the ternary oxide glasses, Li2O-B2O3Fe2O3. In all investigated glasses (~ 8.4 at % Fe), the Fe3+ ions coexist in tetrahedral and octahedral coordinations ; the presence of Fe2+ ions ( 15 %), which is observed in some gla...

Subsolidus Phase Relations in the BaO-TiO2-Fe2O3 System

The subsolidus phase equilibrium relation in the Ba0-Ti0,-FezQ system at 1240°C in air has been investigated by conventional solid state reaction techniques and X-ray powder diffraction. Twelve quarternary compounds were recognized, BaTi1,FexO3., ( 0 . 1 ~ ~ 0 . 7 5 ) (N), Ba3TiFel,0m (K), BaTizFe,Oll (R). Ba2Ti,Fe20,3 (J), Ba,Ti,ge&O, (0.55<xc0.67) (H), Ba12Ti16F%%9 (1). Ba3,Ti,FezO, (O), B ~ ...

On the origin of the spontaneous formation of nanocavities in hexagonal bronzes (W,V)O3.

Hexagonal (W,V)O3-x oxides of high thermal stability have been synthesized hydrothermally through the intermediate products Nax(W,V)O3·zH2O and (NH4)0.33-x(W,V)O3-y. The obtained crystals show nanostructured surface via the formation of a dense population of polyhedral nanocavities self-distributed along particular crystallographic directions. Nanocavities present a regular size that ranges fro...

formation and evolution of regional organizations: the case study of the economic cooperation organization (eco)

abstract because of the many geopolitical, geo economical and geo strategically potentials and communicational capabilities of eco region, members can expand the convergence and the integration in base of this organization that have important impact on members development and expanding peace in international and regional level. based on quality analyzing of library findings and experts interv...

M-Type Barium Hexagonal Ferrite Films