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Magnetic properties of nanostructured MnZn ferrite |
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| Authors: | Mohammad Javad Nasr Isfahani,Maxym Myndyk,Armin Feldhoff,Vladimir &Scaron epelá k |
| Affiliation: | a Physics Department, Faculty of Sciences, The University of Isfahan, Isfahan 81746-73441, Iran b Institute of Physical and Theoretical Chemistry, Braunschweig University of Technology, Hans-Sommer-Strasse 10, D-38106 Braunschweig, Germany c Institute of Condensed Matter Physics, Braunschweig University of Technology, Mendelssohnstrasse 3, D-38106 Braunschweig, Germany d Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstrasse 3-3A, D-30167 Hannover, Germany |
| Abstract: | Mn0.5Zn0.5Fe2O4 nanoparticles (10-30 nm) have been prepared via mechanochemical processing, using a mixture of two single-phase ferrites, MnFe2O4 and ZnFe2O4. SQUID measurements (field-cooled magnetization curves and hysteresis loops) were performed to follow the mechanically induced evolution of the MnFe2O4/ZnFe2O4 mixture submitted to the high-energy milling process. The resulting single MnZn nanoferrite phase was characterized by SQUID (M-H curve), Faraday balance (M-T curve) and transmission electron microscopy. The magnetic characteristics of the mechanosynthesized material were compared with those of bulk Mn0.5Zn0.5Fe2O4. It was found that the saturation magnetization of nanostructured Mn0.5Zn0.5Fe2O4 (87.2 emu/g) is lower than that of the bulk Mn0.5Zn0.5Fe2O4, but, the Néel temperature of the sample (583 K) is higher than that of the bulk Mn0.5Zn0.5Fe2O4. |
| Keywords: | 75.50.Gg 74.25.Ha 75.50.Tt 81.20.Ev. |
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