Synthesis and investigation of magnetic properties of substituted ferrite nanoparticles of spinel system Mn1-xZnx Fe2-yLy O-4

    Authors

    T. N. Brusentsova;V. D. Kuznetsov

    Comments

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    Abbreviated Journal Title

    J. Magn. Magn. Mater.

    Keywords

    superparamagnetic particle; ferrite; magnetic property; Curie; temperature; hysteresis; heating in AC field; FLUID HYPERTHERMIA; FIELD; Materials Science, Multidisciplinary; Physics, Condensed Matter

    Abstract

    Superparamagnetic nanoparticles of the spinel ferrite four-element system Mn1-xZnx[Fe2-yLy]O-4 (where L:Gd3+, La3+, Ce3+, Eu3+, Dy3+, Er3+,Yb3+) were synthesized by the co-precipitation method. The magnetic moments of the 10 run diameter nanoparticles were comparable to the ones of Fe3O4 nanoparticles. A comparatively low T-C (similar to 52-72 degrees C) was observed for some of the compositions. The heating mechanism of the superparamagnetic particles in the AC magnetic field at radiofrequency range is discussed and especially the absence of the hysteresis loop in the M-H curve at room temperature. One possible explanation-spontaneous particle agglomeration-was experimentally verified. (C) 2006 Elsevier B.V. All rights reserved.

    Journal Title

    Journal of Magnetism and Magnetic Materials

    Volume

    311

    Issue/Number

    1

    Publication Date

    1-1-2007

    Document Type

    Article; Proceedings Paper

    Language

    English

    First Page

    22

    Last Page

    25

    WOS Identifier

    WOS:000245524800006

    ISSN

    0304-8853

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