Interfacial defect structure at Sb2Te3 precipitates in the thermoelectric compound AgSbTe2

被引：26
作者：
Medlin, D. L. [1 ]
Sugar, J. D. [1 ]
机构：
[1] Sandia Natl Labs, Livermore, CA 94551 USA
来源：
SCRIPTA MATERIALIA | 2010年 / 62卷 / 06期
基金：
美国能源部;
关键词：
Thermoelectric materials; Phase transformations; Precipitation; Interfaces; High-resolution electron microscopy (HREM); POWER GENERATION; SYSTEM; DISCONNECTIONS; DISLOCATIONS; STEPS; PBTE; TE; SE; BI;
D O I：
10.1016/j.scriptamat.2009.11.028
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We analyze a line defect at the Interface between tetradymite-structured Sb2Te3 and rocksalt-structured AgSbTe2 using high-resolution electron microscopy By determining the step-height and Burgers vector of this defect, we show how motion of the defect, through it diffusive glide mechanism, call transform material from the rocksalt structure to the tetradymite structure We discuss the atomic flux requirements for this defect motion This analysis helps to explain the growth mechanism of tetradymite precipitates within rocksalt-structured chalcogenides (C) 2009 Acta Materialia Inc Published by Elsevier Ltd All rights reserved
引用
收藏
页码：379 / 382
页数：4
相关论文
共 25 条
  • [1] REFINEMENT OF SB2TE3 AND SB2TE2SE STRUCTURES AND THEIR RELATIONSHIP TO NONSTOICHIOMETRIC SB2TE3-YSEY COMPOUNDS
    ANDERSON, TL
    KRAUSE, HB
    [J]. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1974, 30 (MAY15): : 1307 - 1310
  • [2] Armstrong R.W., 1960, J APPL PHYS, V31, P1954
  • [3] Minerals of the system Bi-Te-Se-S related to the tetradymite archetype: Review of classification and compositional variation
    Cook, Nigel J.
    Ciobanu, Cristiana L.
    Wagner, Thomas
    Stanley, Christopher J.
    [J]. CANADIAN MINERALOGIST, 2007, 45 : 665 - 708
  • [4] New directions for low-dimensional thermoelectric materials
    Dresselhaus, Mildred S.
    Chen, Gang
    Tang, Ming Y.
    Yang, Ronggui
    Lee, Hohyun
    Wang, Dezhi
    Ren, Zhifeng
    Fleurial, Jean-Pierre
    Gogna, Pawan
    [J]. ADVANCED MATERIALS, 2007, 19 (08) : 1043 - 1053
  • [5] Lead telluride as a thermoelectric material for thermoelectric power generation
    Dughaish, ZH
    [J]. PHYSICA B-CONDENSED MATTER, 2002, 322 (1-2) : 205 - 223
  • [6] CONTINUOUS SERIES OF ONE-DIMENSIONAL STRUCTURES IN COMPOUNDS BASED ON M2X3 (M = SB, BI, X = SE, TE)
    FRANGIS, N
    KUYPERS, S
    MANOLIKAS, C
    VANTENDELOO, G
    VANLANDUYT, J
    AMELINCKX, S
    [J]. JOURNAL OF SOLID STATE CHEMISTRY, 1990, 84 (02) : 314 - 334
  • [7] TERNARY SEMICONDUCTING COMPOUNDS WITH SODIUM CHLORIDE-LIKE STRUCTURE - AGSBSE2, AGSBTE2, AGBIS2, AGBISE2
    GELLER, S
    WERNICK, JH
    [J]. ACTA CRYSTALLOGRAPHICA, 1959, 12 (01): : 46 - 54
  • [8] Steps, dislocations and disconnections as interface defects relating to structure and phase transformations
    Hirth, JP
    Pond, RC
    [J]. ACTA MATERIALIA, 1996, 44 (12) : 4749 - 4763
  • [9] DISLOCATIONS, STEPS AND DISCONNECTIONS AT INTERFACES
    HIRTH, JP
    [J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1994, 55 (10) : 985 - 989
  • [10] Cubic AgPbmSbTe2+m:: Bulk thermoelectric materials with high figure of merit
    Hsu, KF
    Loo, S
    Guo, F
    Chen, W
    Dyck, JS
    Uher, C
    Hogan, T
    Polychroniadis, EK
    Kanatzidis, MG
    [J]. SCIENCE, 2004, 303 (5659) : 818 - 821
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