Journal of Inorganic Materials, Volume. 36, Issue 1, 95(2021)

Electron Irradiation Induced Phase-separation Behavior in AlF3 Doped Alumina Ceramic with Superior Sensitivity

Lu SHEN1... Dewen WANG2, Rong HUANG3, Shiyu DU1 and Qing HUANG1,* |Show fewer author(s)
Author Affiliations
  • 1Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
  • 2Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
  • 3Key Laboratory of Polar Materials and Devices (MOE), Department of Electronics, East China Normal University, Shanghai 200062, China
  • show less
    Figures & Tables(4)
    TEM observations of a grain surface of 0.1wt% AlF3 doped sample (a) Original surface before high magnification observation; (b) Surface after high magnification observation, where sphere precipitates separated out; (c-d) Black arrow shows the growing of a new precipitate under irradiation; (e) Lattice fringes of a precipitated crystal
    EELS of the precipitation and its reference
    HRTEM images and selected area diffraction of AlF3 doped alumina grain (a) HRTEM images of AlF3 doped alumina grain before Al precipitation. White arrows points to the planer defects; (b) The same grain after Al precipitation; (c, d) Diffraction patterns correspond to the grain before and after Al precipitation, respectively. The zone axis is along [0001] direction; (e) Magnification of area i in (a). The dotted box traces a dislocation core and the parallel lines show the distortion contrast composed of three or four layers; (f) Inversed FFT of the area ii in (a) from (21¯1¯0)/(2¯110) diffraction spots
    (a) Schematic diagram of cation sub-lattice in α-alumina. The open and closed circles are the unoccupied and occupied octahedron sites respectively. Half-filled circles represent octahedron sites occupied by extrinsic Al3+ ions; (b) Real alumina structure in [112¯0] projection. The red box selects an Al layer between two oxygen layers; (c, d) Structures of the selected Al ions layer repainted in [0001] projection, before and after the act of a 1/3 [11¯00] partial dislocation, respectively. The open circles indicate unoccupied octahedron sites in the same layer
    Tools

    Get Citation

    Copy Citation Text

    Lu SHEN, Dewen WANG, Rong HUANG, Shiyu DU, Qing HUANG. Electron Irradiation Induced Phase-separation Behavior in AlF3 Doped Alumina Ceramic with Superior Sensitivity[J]. Journal of Inorganic Materials, 2021, 36(1): 95

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category: RESEARCH LETTERS

    Received: Nov. 4, 2020

    Accepted: --

    Published Online: Jan. 21, 2021

    The Author Email: HUANG Qing (huangqing@nimte.ac.cn)

    DOI:10.15541/jim20190564

    Topics