English  |  正體中文  |  简体中文  |  Items with full text/Total items : 49621/84835 (58%)
Visitors : 7689986      Online Users : 70
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27524


    Title: The Magnetic Properties of Strained and Relaxed Fe3-xMgxO4 Ferrite Films on MgO(001) and SrTiO3(001) by Molecular Beam Epitaxy
    Authors: 張經霖;Chang, C. L.;Lee, D. S.;Wang, J. S.;Modak, Dilip K.;Liu, Y. S.;Chern, G.
    Contributors: 淡江大學物理學系
    Date: 2007-05-01
    Issue Date: 2009-12-31 10:14:49 (UTC+8)
    Publisher: American Institute of Physics (AIP)
    Abstract: The present study grows a series of Fe3-xMgxO4 (0≦x≦1.5) films and systematically measure both structure and magnetization of these films. These films are grown on MgO and SrTiO3 (STO), which have small (∼-0.3%) and large (∼7.5%) lattice mismatch in order to have either strained or relaxed films, by plasma-oxygen-assisted molecular beam epitaxy, respectively. X-ray diffraction (XRD) is carried out to analyze the crystalline structure. Saturation magnetization (Ms) of pure Fe3O4 (x=0) on both substrates is ∼500 emu/cm3, which is consistent with the bulk value. However, Ms has a fast decrease with increasing x for the films grown on MgO(001), from 340 to ∼100 emu/cm3 in the region of 0.3≪x≪1.35, and stays at ∼100 emu/cm3 for x≫1.35. On the other hand, Ms remains unchanged with x increasing from 0.3 to 1 for the film grown on STO. With x≫1, Ms drops abruptly to ∼100 emu/cm3, which is comparable to Ms of the film grown on MgO. The discrepancy in Ms of Fe3-xMgxO4 film grown on MgO and STO may imply that the cation distribution of these films may be fundamentally different. Possible cation distribution and the substrate strain effect will be discussed.
    Relation: Journal of Applied Physics 101(9), pp.09M532
    DOI: 10.1063/1.2712826
    Appears in Collections:[物理學系暨研究所] 期刊論文

    Files in This Item:

    File Description SizeFormat
    0021-8979_101(9)p09M532.pdf122KbAdobe PDF561View/Open

    All items in 機構典藏 are protected by copyright, with all rights reserved.


    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - Feedback