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  • The hydrothermal synthesis of super-paramagnetic barium hexaferrite particles : review
    Drofenik, Mihael ...
    Superparamagnetic Ba-hexaferrite nanoparticles were prepared using modified hydrothermal synthesis. The precursor and hydroxide [OH-] concentrations were optimized and the synthesis temperature and ... time were drastically reduced. The size and the morphology of synthesized nanoparticles was confirmed by transmission electron microscopy (TEM) images. The crystal structure of the nanoparticles was characterized by X-ray diffraction data. Powders synthesizedat 160 °C exhibit a bimodal particle size distribution while those synthesized at TS = 150 °C show a monomodal particle size distribution. Zero-field-cooling (ZFC) and field-cooling (FC) magnetization measurements were performed using a superconducting quantum interference device magnetometer from 2 to 300 K to investigate the magnetic properties of nanoparticles. The FC/ZFC magnetization measurements showed a typical superparamagnetic behavior. The synthesized superparamagnetic particles exhibit a disc-like shape, in average 11 nm wide and 3 nm thick with a room temperature magnetization of approximately 10 Am2/kg at 5 T.
    Vir: Materials chemistry and physics. - ISSN 0254-0584 (Vol. 127, iss. 3, 2011, str. 415-419)
    Vrsta gradiva - članek, sestavni del
    Leto - 2011
    Jezik - angleški
    COBISS.SI-ID - 14853654
    DOI

vir: Materials chemistry and physics. - ISSN 0254-0584 (Vol. 127, iss. 3, 2011, str. 415-419)

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