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Reducing the crystallite and particle size of SrFe12O19 with PVA by high energy ball milling

作者： F.N. Tenorio Gonzalez^a, I.R. Barajas Rosales^a, P. Vera Serna^a, F. Sánchez de Jesus^b, A.M. Bolarin Miró^b, A. Garrido Hernández^c, Martin Kusý^d

^aDivisión de ingenierías Universidad Politécnica de Tecamac, Prolongación 5 de Mayo 10, Centro, C.P.55740, Estado de México, Mexico

^bÁrea Académica de Ciencias de la Tierra y Materiales, Universidad Autónoma del Estado de Hidalgo, 42184, Mineral de la Reforma, Hidalgo, Mexico

^cUniversidad Tecnológica de Tecámac, 55740, Tecámac, Estado de México, Mexico

^dSlovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Jána Bottu No. 2781/25, 917 24, Trnava, Slovak Republic

摘要：The effect of polyvinyl alcohol, PVA, on crystallite and particle sizes of strontium hexaferrite synthesized by high-energy ball milling followed by an annealing at 950?°C is presented. Results of X-ray diffraction of (100-x)SrFe12O19@xPVA (0?≤?x?≤?100) composites shown the presence of strontium hexaferrite in all samples, while the crystal structure of PVA is degraded due to the mechanical energy supplied from the milling process. However, the Infrared study (FTIR) indicated that the polymeric chain kept intact. Magnetic behavior, from vibrating sample magnetometry tests, shown a waist wasp type hysteresis loop, for all the composites SrFe12O19@PVA, confirming that both materials do not generate bonds, and there is only a mixture of materials. Finally, Rietveld refinement, SEM analysis, and particle size measurement allowed demonstrating that PVA reduces the crystallite and particle sizes at nanometers scale of strontium hexaferrite synthesized.