Magnetic Properties and Thermal Stability of xFe (100-x)SiO2 (x=5-95) Powder Nanocomposites

Tatiana Yu.  Kiseleva; Alla A. Novakova; Tatiana S. Gendler; Igor A. Il’inych; Vera V. Levina

doi:10.4028/www.scientific.net/SSP.190.435

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Magnetic Properties and Thermal Stability of xFe (100-x)SiO₂ (x=5-95) Powder Nanocomposites

Abstract:

The study of Fe/SiO₂ nanocomposites magnetic properties and structure relationships was performed in dependence on Fe to SiO₂ relative concentration and type of precursors preparation (mechanical mixing or ultrasonic homogenization). Thermal metallization method in hot hydrogen of initial reagents [хFeOOH and (100-x)SiO₂] was applied for nanocermets production. It was determined that formation of air-tight shell on the particles surface affects the nanocomposites magnetization values and their air temperature stability.