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Title: Defect structure of Sb{sub 2-x}Fe{sub x}Te{sub 3} single crystals

Abstract

Single crystals of Sb{sub 2-x}Fe{sub x}Te{sub 3} (c{sub Fe}=0-9.5x10{sup 19}cm{sup -3}) were prepared by Bridgman method. The interpretation of the reflection spectra in plasma resonance region indicates that Fe increases the concentration of holes (acceptor) and each Fe atom incorporated in Sb{sub 2}Te{sub 3} structure liberates 0.4-0.5 hole. Observed effect is elucidated by means of point defect model. According to the model Fe atoms enter the structure and form uncharged substitutional defects Fe{sub Sb}{sup x}. Since this defect cannot affect the free-carrier concentration directly, we assume an interaction of the entering Fe-atoms with natives defects leading to a rise in the concentration of antisite defects Sb{sub Te}{sup '}, to a decrease of V{sub Te} concentration, and to an increase in the concentration of holes.

Authors:
 [1];  [2];  [3];  [1];  [4]
  1. Joint Laboratory of Solid State Chemistry, Institute of Macromolecular Chemistry of the Academy of Sciences of the Czech Republic, University of Pardubice, Studentska 84, 532 10 Pardubice (Czech Republic)
  2. Faculty of Chemical Technology, University of Pardubice, Cs. Legii Square 565, 532 10 Pardubice (Czech Republic)
  3. Faculty of Chemical Technology, University of Pardubice, Cs. Legii Square 565, 532 10 Pardubice (Czech Republic), E-mail: cestmir.drasar@upce.cz
  4. Department of Physics, University of Michigan, Ann Arbor, MI 48109-1120 (United States)
Publication Date:
OSTI Identifier:
21015729
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 180; Journal Issue: 3; Other Information: DOI: 10.1016/j.jssc.2006.12.016; PII: S0022-4596(06)00654-2; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ANTIMONY ALLOYS; ANTIMONY TELLURIDES; BRIDGMAN METHOD; HOLES; INTERACTIONS; IRON ALLOYS; MONOCRYSTALS; OPTICAL PROPERTIES; PLASMA; POINT DEFECTS; REFLECTION; RESONANCE; SPECTRA; TELLURIUM ALLOYS

Citation Formats

Horak, J., Lost'ak, P., Drasar, C., Navratil, J., and Uher, C.. Defect structure of Sb{sub 2-x}Fe{sub x}Te{sub 3} single crystals. United States: N. p., 2007. Web. doi:10.1016/j.jssc.2006.12.016.
Horak, J., Lost'ak, P., Drasar, C., Navratil, J., & Uher, C.. Defect structure of Sb{sub 2-x}Fe{sub x}Te{sub 3} single crystals. United States. doi:10.1016/j.jssc.2006.12.016.
Horak, J., Lost'ak, P., Drasar, C., Navratil, J., and Uher, C.. Thu . "Defect structure of Sb{sub 2-x}Fe{sub x}Te{sub 3} single crystals". United States. doi:10.1016/j.jssc.2006.12.016.
@article{osti_21015729,
title = {Defect structure of Sb{sub 2-x}Fe{sub x}Te{sub 3} single crystals},
author = {Horak, J. and Lost'ak, P. and Drasar, C. and Navratil, J. and Uher, C.},
abstractNote = {Single crystals of Sb{sub 2-x}Fe{sub x}Te{sub 3} (c{sub Fe}=0-9.5x10{sup 19}cm{sup -3}) were prepared by Bridgman method. The interpretation of the reflection spectra in plasma resonance region indicates that Fe increases the concentration of holes (acceptor) and each Fe atom incorporated in Sb{sub 2}Te{sub 3} structure liberates 0.4-0.5 hole. Observed effect is elucidated by means of point defect model. According to the model Fe atoms enter the structure and form uncharged substitutional defects Fe{sub Sb}{sup x}. Since this defect cannot affect the free-carrier concentration directly, we assume an interaction of the entering Fe-atoms with natives defects leading to a rise in the concentration of antisite defects Sb{sub Te}{sup '}, to a decrease of V{sub Te} concentration, and to an increase in the concentration of holes.},
doi = {10.1016/j.jssc.2006.12.016},
journal = {Journal of Solid State Chemistry},
number = 3,
volume = 180,
place = {United States},
year = {Thu Mar 15 00:00:00 EDT 2007},
month = {Thu Mar 15 00:00:00 EDT 2007}
}
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