Počet záznamů: 1  

Mossbauer and Magnetic Studies of Co0.5Mn0.5Fe2O4 and Mn0.1Mg0.2Co0.7 Fe2O4 Nanoferrites

  1. 1.
    0386999 - ÚACH 2013 RIV US eng J - Článek v odborném periodiku
    Abdallah, H.M.I. - Msomi, J.Z. - Moyo, T. - Lančok, Adriana
    Mossbauer and Magnetic Studies of Co0.5Mn0.5Fe2O4 and Mn0.1Mg0.2Co0.7 Fe2O4 Nanoferrites.
    Journal of Superconductivity and Novel Magnetism. Roč. 25, č. 8 (2012), s. 2619-2623. ISSN 1557-1939. E-ISSN 1557-1947
    Institucionální podpora: RVO:61388980
    Klíčová slova: Ferrites * Superparamagnetism * Mossbauer spectroscopy * Magnetization
    Kód oboru RIV: CA - Anorganická chemie
    Impakt faktor: 0.702, rok: 2012

    We report the magnetic properties of Mn0.5Co0.5Fe2O4 and Mn0.1Mg0.2Co0.7Fe2O4 nanoferrites. The compounds were synthesized by a glycol-thermal method with average particle sizes of about 13 nm and 8 nm, respectively. The Mossbauer measurements were done at 300 K. The distribution of cations between tetrahedral (A) and octahedral (B) sites is investigated. The Mossbauer spectra indicate ferrimagnetic behavior of the compound. Field cooled (FC) and zero field cooled (ZFC) magnetizations were performed by a Superconducting Quantum Interference Device (SQUID) magnetometer from 4-380 K. Variation of the magnetizations with the applied fields (up to 50 kOe) were recorded at isothermal temperatures 4, 50, 100, 200 and 300 K. An increase in FC magnetization is observed with increasing applied field. This is explained based on superparamagnetic behavior of the particles.
    Trvalý link: http://hdl.handle.net/11104/0216210

     
     
Počet záznamů: 1  

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