Synthesis and magnetic properties of zinc-tellurite glasses activated by magnetite nanoparticles

An effect of activation with nanosized particles Fe 3 O 4 on structural and magnetic properties zinc-tellurite glasses 20·ZnO-(80-x)·TeO 2 -x·Fe (x=0, 1, 3, 7), prepared melt-quenching method, have been investigated. Some functional the were experimentally investigated X-ray diffraction, Energy dispersive Raman spectroscopies, SQUID magnetometry. The values average crystallite sizes calculated Scherer Williamson-Hall methods comparable magnetically active clusters reconstructed from results processing field dependences specific magnetizations, indicating their change in activated glasses. A partial phase transformation, caused by oxidation 2+ into 3+ ions, ferrimagnetic magnetite paramagnetic maghemite γ-Fe has revealed. Keywords: glass, glass-ceramics, nanoparticle, magnetite, magnetism.