Crystal Research and Technology
Cryst. Res. Technol. 34 (1999) 829 - Abstract -

N. Rezlescu, L. Rezlescu, M. L. Craus, E. Rezlescu

Institute of Technical Physics, Iasi, Romania

LiFe5O8 and BaFe12O19 Fine Particles Crystallised in a Glassy Matrix

We investigated the magnetic and microstructure properties of the Fe2O3 - Li2O - B2O3 and Fe2O3 - BaO - B2O3 - Sb2O3 glass strips (with dimensions 50 mm long, 6 mm wide and about 30-100 mikrometer thick) subjected to various heat treatments. The irreversible structure changes produced by heat treatments, were investigated by X-ray diffraction and magnetic measurements. The magnetic behaviour is discussed in terms of the evolution of the size of LiFe5O8 and BaFe12O19 crystals dispersed in the glassy matrix, with thermal annealing.

Keywords: glass-ceramic, crystallization, magnetization, coercivity


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