Studies on Progressive Reactions Leading Formations of Different Types of Barium Ferrites

Abstract

Abstract: The present investigation is concerned with the reaction of barium and iron nitrates mixtures using three different molar ratios, 1:1 (I), 1:2 (II) and 2:1 (III) at different temperatures as pointed out from the DTA data. The reaction products exhibit 12 compounds namely, Ba(NO3)2, α-Fe2O3, Fe3O4, BaFeO3, BaFeO2.9, hexagonal BaFeO3-x, tetragonal BaFeO3-x’,BaFe2O4, α’-BaFe2O4, Ba2Fe6O11, Ba5Fe14O26 and BaFe12O19. The formation of these products depends on the molar ratio between the reactants and the reaction temperature. The reaction products were studied by DTA and TG techniques and characterized by X-ray diffraction patterns, magnetic susceptibility data and scanning electron microscopy, SEM.

Key words:

H.I.Saleh. Studies on Progressive Reactions Leading Formations of Different Types of Barium Ferrites[J]. J Mater Sci Technol, 1999, 15(02): 159-163.

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Studies on Progressive Reactions Leading Formations of Different Types of Barium Ferrites

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