English  |  正體中文  |  简体中文  |  Items with full text/Total items : 49350/84015 (59%)
Visitors : 7271593      Online Users : 42
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/987654321/27648


    Title: High frequency dielectric properties of Ba(Mg1/3Ta2/3)O3 complex perovskite ceramics
    Authors: 林諭男;Lin, I. N.;Chia, C. T.;Liu, H. L.;Chen, Y. C.;Cheng, H. F.;Chi, C. C.
    Contributors: 淡江大學物理學系
    Keywords: Ba(Mg,Ta,)O3 materials;FTIR spectroscopy;Microwave ceramics;Dielectric properties;Raman spectroscopy
    Date: 2003-12
    Issue Date: 2009-12-31 10:33:58 (UTC+8)
    Publisher: Elsevier
    Abstract: The dielectric properties of Ba(Mg1/3Ta2/3)O3 and Ba(Mg1/3Nb2/3)O3 ceramics were investigated using Fourier transformed infrared and Raman spectroscopies. The real part of dielectric constant of these materials decreases when the heavier Ta atoms replaced the lighter Nb atoms, which is closely related to the shift of mode-frequency. The Q-factor of the materials depends weakly on the composition. The decrease in Q-factor with the frequency is due to the presence of a resonance mode at around 3 THz. Larger width of the breathing Raman mode, A1g[O], correlates very well with the lower Q-value of the BMN materials, as compared with the BMT materials.
    Relation: Journal of the European Ceramic Society 23(14), pp.2633-2637
    DOI: 10.1016/S0955-2219(03)00160-2
    Appears in Collections:[物理學系暨研究所] 期刊論文

    Files in This Item:

    File Description SizeFormat
    0KbUnknown238View/Open
    index.html0KbHTML63View/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