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Title: Structural studies of Bi 2 O 3 -Nb 2 O 5 -TeO 2 glasses

Abstract

Bi 2O 3-Nb 2O 5-TeO 2 glasses show unusual annealing behavior with appearance of spherulites within the matrix glass structure for the Bi 0.5Nb 0.5Te 3O 8 composition. The textures resemble those found previously among polyamorphic Al 2O 3-Y 2O 3 glasses containing metastably co-existing high- and low-density phases produced during quenching. However the spherulites produced within the Bi 2O 3-Nb 2O 5-TeO 2 glass are crystalline and can be identified as an “anti-glass” phase related to β-Bi 2Te 4O 11. Here, we used high energy synchrotron X-ray diffraction data to study structures of binary and ternary glasses quenched from liquids within the Bi 2O 3-Nb 2O 5-TeO 2 system. These reveal a glassy network based on interconnected TeO 4 and TeO 3 units that is related to TeO 2 crystalline materials but with larger Te…Te separations due to the presence of TeO 3 groups and non-bridging oxygens linked to modifier (Bi 3 +, Nb 5 +) cations. Analysis of the viscosity-temperature relations indicates that the glass-forming liquids are “fragile” and there is no evidence for a LLPT occurring in the supercooled liquid. The glasses obtained by quenching likely correspond to a high-density amorphous (HDA) state. Subsequent annealing above Tmore » g shows mainly evidence for direct crystallization of the “anti-glass” tellurite phase. But, some evidence may exist for simultaneous formation of nanoscale amorphous spherulites that could correspond to the LDA polyamorph. The quenching and annealing behavior of Bi 2O 3-Nb 2O 5-TeO 2 supercooled liquids and glasses is compared with similar materials in the Al 2O 3-Y 2O 3 system.« less

Authors:
 [1];  [2];  [3];  [4];  [2];  [2];  [2];  [5];  [6]
  1. Univ. College London (United Kingdom). Dept. of Chemistry; Univ. of Bath (United Kingdom). Dept. of Physics
  2. Univ. of Limoges (France)
  3. Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Division
  4. Univ. of Rennes (France)
  5. Tohoku Univ., Sendai (Japan). Inst. of Multidisciplinary Research for Advanced Materials (IMRAM)
  6. Univ. College London (United Kingdom). Dept. of Chemistry
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1389309
Grant/Contract Number:
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Non-Crystalline Solids
Additional Journal Information:
Journal Volume: 451; Journal Issue: C; Journal ID: ISSN 0022-3093
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Tellurite glass; Polyamorphism; Fragility; High energy X-ray diffraction

Citation Formats

Wilding, Martin C., Delaizir, Gaelle, Benmore, Chris J., Gueguen, Yann, Dolhen, Morgane, Duclère, Jean-René, Chenu, Sébastien, Sukenaga, Sohei, and McMillan, Paul F.. Structural studies of Bi 2 O 3 -Nb 2 O 5 -TeO 2 glasses. United States: N. p., 2016. Web. doi:10.1016/j.jnoncrysol.2016.07.004.
Wilding, Martin C., Delaizir, Gaelle, Benmore, Chris J., Gueguen, Yann, Dolhen, Morgane, Duclère, Jean-René, Chenu, Sébastien, Sukenaga, Sohei, & McMillan, Paul F.. Structural studies of Bi 2 O 3 -Nb 2 O 5 -TeO 2 glasses. United States. doi:10.1016/j.jnoncrysol.2016.07.004.
Wilding, Martin C., Delaizir, Gaelle, Benmore, Chris J., Gueguen, Yann, Dolhen, Morgane, Duclère, Jean-René, Chenu, Sébastien, Sukenaga, Sohei, and McMillan, Paul F.. 2016. "Structural studies of Bi 2 O 3 -Nb 2 O 5 -TeO 2 glasses". United States. doi:10.1016/j.jnoncrysol.2016.07.004. https://www.osti.gov/servlets/purl/1389309.
@article{osti_1389309,
title = {Structural studies of Bi 2 O 3 -Nb 2 O 5 -TeO 2 glasses},
author = {Wilding, Martin C. and Delaizir, Gaelle and Benmore, Chris J. and Gueguen, Yann and Dolhen, Morgane and Duclère, Jean-René and Chenu, Sébastien and Sukenaga, Sohei and McMillan, Paul F.},
abstractNote = {Bi2O3-Nb2O5-TeO2 glasses show unusual annealing behavior with appearance of spherulites within the matrix glass structure for the Bi0.5Nb0.5Te3O8 composition. The textures resemble those found previously among polyamorphic Al2O3-Y2O3 glasses containing metastably co-existing high- and low-density phases produced during quenching. However the spherulites produced within the Bi2O3-Nb2O5-TeO2 glass are crystalline and can be identified as an “anti-glass” phase related to β-Bi2Te4O11. Here, we used high energy synchrotron X-ray diffraction data to study structures of binary and ternary glasses quenched from liquids within the Bi2O3-Nb2O5-TeO2 system. These reveal a glassy network based on interconnected TeO4 and TeO3 units that is related to TeO2 crystalline materials but with larger Te…Te separations due to the presence of TeO3 groups and non-bridging oxygens linked to modifier (Bi3 +, Nb5 +) cations. Analysis of the viscosity-temperature relations indicates that the glass-forming liquids are “fragile” and there is no evidence for a LLPT occurring in the supercooled liquid. The glasses obtained by quenching likely correspond to a high-density amorphous (HDA) state. Subsequent annealing above Tg shows mainly evidence for direct crystallization of the “anti-glass” tellurite phase. But, some evidence may exist for simultaneous formation of nanoscale amorphous spherulites that could correspond to the LDA polyamorph. The quenching and annealing behavior of Bi2O3-Nb2O5-TeO2 supercooled liquids and glasses is compared with similar materials in the Al2O3-Y2O3 system.},
doi = {10.1016/j.jnoncrysol.2016.07.004},
journal = {Journal of Non-Crystalline Solids},
number = C,
volume = 451,
place = {United States},
year = 2016,
month = 7
}

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