Medium range order and structural relaxation in As-Se network glasses through FSDP analysis

被引：13

作者：

Golovchak, R. ^{[1
]}

Lucas, P. ^{[2
]}

Oelgoetz, J. ^{[1
]}

Kovalskiy, A. ^{[1
]}

York-Winegar, J. ^{[1
]}

Saiyasombat, Ch ^{[3
]}

Shpotyuk, O. ^{[4
]}

Feygenson, M. ^{[5
]}

Neuefeind, J. ^{[5
]}

Jain, H. ^{[3
]}

机构：

[1] Austin Peay State Univ, Dept Phys & Astron, Clarksville, TN 37044 USA

[2] Univ Arizona, Dept Mat Sci & Engn, Tucson, AZ 85712 USA

[3] Lehigh Univ, Dept Mat Sci & Engn, Bethlehem, PA 18015 USA

[4] Jan Dlugosz Univ Czestochowa, Inst Phys, PL-42200 Czestochowa, Poland

[5] Oak Ridge Natl Lab, Chem & Engn Mat Div, Spallat Neutron Source, Oak Ridge, TN 37831 USA

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2015年 / 153卷

基金：

美国国家科学基金会;

关键词：

Glasses; Powder diffraction; Neutron scattering and diffraction; Glass transitions; SHARP DIFFRACTION PEAK; TEMPERATURE-DEPENDENCE; NEUTRON-DIFFRACTION; CRYSTAL-STRUCTURE; AS2SE3;

D O I：

10.1016/j.matchemphys.2015.01.037

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Synchrotron X-ray diffraction and neutron scattering studies are performed on As-Se glasses in two states: as-prepared (rejuvenated) and aged for similar to 27 years. The first sharp diffraction peak (FSDP) obtained from the structure factor data as a function of composition and temperature indicates that the cooperative processes that are responsible for structural relaxation do not affect FSDP. The results are correlated with the composition dependence of the complex heat capacity of the glasses and concentration of different structural fragments in the glass network. The comparison of structural information shows that density fluctuations, which were thought previously to have a significant contribution to FSDP, have much smaller effect than the cation-cation correlations, presence of ordered structural fragments or cage molecules. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：432 / 442

页数：11

共 54 条

[1]

Adam JL, 2014, WOODH PUB SER ELECT, P1

[2] THE STRUCTURE OF PHOSPHORUS-SELENIUM GLASSES .2. RESULTS FROM NEUTRON-DIFFRACTION WITH ISOTOPE SUBSTITUTION [J].

ARAI, M ;

JOHNSON, RW ;

PRICE, DL ;

SUSMAN, S ;

GAY, M ;

ENDERBY, JE .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1986, 83 (1-2) :80-90

[3] Compositional Thresholds and Anomalies in Connection with Stiffness Transitions in Network Glasses [J].

Bauchy, M. ;

Micoulaut, M. ;

Boero, M. ;

Massobrio, C. .

PHYSICAL REVIEW LETTERS, 2013, 110 (16)

[4]

BOOLCHAND P, 2009, RIGIDITY BOOLCHAND I

[5]

Borisova Z. U., 1983, Chalcogenide Semiconducting Glasses

[6] TEMPERATURE-DEPENDENCE OF THE STRUCTURE FACTOR OF AS2SE3 GLASS UP TO THE GLASS-TRANSITION [J].

BUSSE, LE ;

NAGEL, SR .

PHYSICAL REVIEW LETTERS, 1981, 47 (25) :1848-1851

[7] TEMPERATURE-DEPENDENCE OF THE STRUCTURES OF AS2SE3 AND ASXS1-X GLASSES NEAR THE GLASS-TRANSITION [J].

BUSSE, LE .

PHYSICAL REVIEW B, 1984, 29 (06) :3639-3651

[8] Compositional changes of the first sharp diffraction peak in binary selenide glasses [J].

Bychkov, E ;

Benmore, CJ ;

Price, DL .

PHYSICAL REVIEW B, 2005, 72 (17)

[9] Intermediate- and short-range order in phosphorus-selenium glasses [J].

Bytchkov, Aleksei ;

Miloshova, Mariana ;

Bychkov, Eugene ;

Kohara, Shinji ;

Hennet, Louis ;

Price, David L. .

PHYSICAL REVIEW B, 2011, 83 (14)

[10] CRYSTAL-STRUCTURE OF HT-GES2 [J].

DITTMAR, G ;

SCHAFER, H .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1975, 31 (AUG15) :2060-&

← 1 2 3 4 5 6 →