Structure, Magnetic Properties and Defects Distribution of Mn0.5Zn0.5LaxFe2-xO4 Nanocrystals

Li Qun Wang

doi:10.4028/www.scientific.net/AMR.105-106.706

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 105-106Structure, Magnetic Properties and Defects...

Structure, Magnetic Properties and Defects Distribution of Mn_0.5Zn_0.5La_xFe_2-xO₄ Nanocrystals

Abstract:

La-substitution Mn-Zn ferrite nanocrystals, Mn0.5Zn0.5LaxFe2-xO4 (x=0.00, 0.05, 0.10, 0.15, 0.20) were prepared by sol-gel process. X-ray diffraction (XRD), vibrating sample magnetometer (VSM) and positron annihilation lifetime spectroscopy (PALS) studies were carried out. The result of XRD suggests that the mean grain size decreases from 63.8 nm to 44.6 nm with the increment of La-substitution concentration from x=0.00 to 0.20. The VSM measurement shows that the saturation magnetization (MS) increases in the range of x<0.10, then it drastically decreases in the range of 0.10

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Advanced Materials Research (Volumes 105-106)

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706-708

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https://doi.org/10.4028/www.scientific.net/AMR.105-106.706

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April 2010

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Li Qun Wang

Keywords:

Defect, MnZn Ferrite, Positron Annihilation

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