English  |  正體中文  |  简体中文  |  Items with full text/Total items : 51948/87093 (60%)
Visitors : 8507587      Online Users : 322
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/987654321/110121

    Title: Magnetic ordering and dielectric relaxation in the double perovskite YBaCuFeO5
    Authors: Yen-Chung Lai;Chao-Hung Du;Chun-Hao Lai;Yu-Hui Liang;Chin-Wei Wang;Kirrily C Rule;Hung-Cheng Wu;Hung-Duen Yang;Wei-Tin Chen;G J Shu
    Keywords: multiferroics;magnetic phase transition;ferroelectric relaxation
    Date: 2017-03-01
    Issue Date: 2017-03-28 02:10:18 (UTC+8)
    Publisher: Institute of Physics Publishing Ltd.
    Abstract: Using magnetization, dielectric constant, and neutron diffraction measurements on a high quality single crystal of YBaCuFeO5 (YBCFO), we demonstrate that the crystal shows two antiferromagnetic transitions at ${{T}_{N1}}\sim 475$ K and ${{T}_{N2}}\sim 175$ K, and displays a giant dielectric constant with a characteristic of the dielectric relaxation at T N2. It does not show the evidence of the electric polarization for the crystal used for this study. The transition at T N1 corresponds with a paramagnetic to antiferromagnetic transition with a magnetic propagation vector doubling the unit cell along three crystallographic axes. Upon cooling, at T N2, the commensurate spin ordering transforms to a spiral magnetic structure with a propagation vector of ($\frac{h}{2}$ $\frac{k}{2}$ $\frac{l}{2}\pm \delta $ ), where $h$ , $k$ , and $l$ are odd, and the incommensurability δ is temperature dependent. Around the transition boundary at T N2, both commensurate and incommensurate spin ordering coexist.
    Relation: Journal of Physics: Condensed Matter 29(14), 145801(8 pages)
    DOI: 10.1088/1361-648X/aa5708
    Appears in Collections:[物理學系暨研究所] 期刊論文

    Files in This Item:

    File Description SizeFormat
    Magnetic ordering and dielectric relaxation in the double perovskite YBaCuFeO5.pdf3179KbAdobe PDF0View/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