English  |  正體中文  |  简体中文  |  Items with full text/Total items : 49518/84606 (59%)
Visitors : 7578217      Online Users : 61
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/987654321/108298


    Title: Thermoelectric property and x-ray absorption near edge structure studies on Si-doped CaMnO3−δ
    Authors: Liu, Chia-Jyi;Bhaskar, Ankam;Yuan, J.J.;Yang, Zong-Ren;Chen, Shih-Show;Chen, Huang-Chin;Liao, Fan-Wei;Lin, Yu Ting;Yeh, Ping Hung;Lai, Chun-Yen;Chang, Ching-Lin
    Keywords: A. Sintering;B. Electron microscopy;C. Electrical conductivity;Thermal properties;Thermal conductivity
    Date: 2015/11/22
    Issue Date: 2016-11-23 02:10:32 (UTC+8)
    Publisher: Pergamon Press
    Abstract: We report electrical resistivity, thermopower and Ca K-, Mn L2,3- and O K-edges x-ray absorption near edge structure (XANES) studies on CaMn1−xSixO3−δ with x=0, 0.02, and 0.05. The transport properties measurements indicate that the sample of x=0.02 has the lowest electrical resistivity compared to the samples of x=0 and 0.05. Meanwhile, the temperature dependence of thermopower behaves significantly different for samples of x=0.02 and 0.05. These unusual phenomena are elucidated based on the charge transfer equilibrium principle together with the XANES results, which show that the Si substitution for Mn appears to generate an electron doping effect and lattice distortion. Among the samples, CaMn0.98Si0.02O3−δ exhibits the highest figure of merit of 0.0128 at 300 K. This value represents an improvement of about 52% compared to pristine CaMnO3−δ.
    Relation: Ceramics International 42(3), pp.4048–4053
    DOI: 10.1016/j.ceramint.2015.11.076
    Appears in Collections:[物理學系暨研究所] 期刊論文

    Files in This Item:

    File Description SizeFormat
    index.html0KbHTML43View/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