Structural organization of arsenic selenide liquids: new results from liquid state NMR

被引:26
作者
Rosenhahn, C
Hayes, SE
Rosenhahn, B
Eckert, H
机构
[1] Univ Munster, Inst Phys Chem, D-48149 Munster, Germany
[2] Univ Kiel, Inst Informat & Prakt Math, D-24105 Kiel, Germany
基金
美国国家科学基金会;
关键词
D O I
10.1016/S0022-3093(01)00371-4
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Insights into the structure and dynamics of the binary As-Se glass system have been obtained from high-temperature Se-77 nuclear magnetic resonance (NMR) studies of molten samples. In materials having As contents < 20 at.%, dynamic exchange averaging processes are detected and analysed quantitatively by detailed lineshape simulations. At high-temperatures (1.5 x glass transition temperature), only a single averaged Se-77 NMR signal is observed, whose chemical shift arises from the quantitative distribution of As-Se and Se-Se bonds. A detailed analysis of the compositional dependence reveals a tendency towards chemical ordering, based on the structurally dominant AsSe3/2 groups. Furthermore, the experimental data serve to differentiate between various intermediate range ordering scenarios and favor a structural description in terms of a network in which AsSe3/2 and Se-2/2 groups are randomly linked. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:1 / 8
页数:8
相关论文
共 15 条
[1]   ATOMIC REORIENTATION RATES IN LIQUID CHALCOGENIDE GLASSES - NMR IN SE AND AS2SE3 [J].
BISHOP, SG ;
TAYLOR, PC .
SOLID STATE COMMUNICATIONS, 1972, 11 (10) :1323-&
[2]   THE MOLECULAR-STRUCTURE OF AS2SE3 GLASS [J].
BOOLCHAND, P ;
BRESSER, WJ ;
SURANYI, P .
HYPERFINE INTERACTIONS, 1986, 27 (1-4) :385-388
[3]  
BROWN D, 1972, J NONCRYST SOLIDS, V8, P250
[4]   DIFFRACTION STUDIES OF GLASS STRUCTURE .5. STRUCTURE OF SOME ARSENIC CHALCOGENIDE GLASSES [J].
LEADBETTER, AJ ;
APLING, AJ .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1974, 15 (02) :250-268
[5]   ASXSE1-X SYSTEM (0.20 LESS-THAN-OR-EQUAL-TO X LESS-THAN-OR-EQUAL-TO 0.57) - EXAFS STUDY OF THE GLASS REGION [J].
MASTELARO, V ;
DEXPERT, H ;
BENAZETH, S ;
OLLITRAULTFICHET, R .
JOURNAL OF SOLID STATE CHEMISTRY, 1992, 96 (02) :301-310
[6]   INTERMEDIATE-RANGE ORDER IN PHOSPHORUS SELENIUM GLASSES - CONSTRAINTS FROM P-31 AND SE-77 NMR-SPECTROSCOPY [J].
MAXWELL, R ;
LATHROP, D ;
ECKERT, H .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1995, 180 (2-3) :244-250
[7]   SPECIATION EQUILIBRIA, CLUSTERING, AND CHEMICAL-EXCHANGE KINETICS IN NONOXIDE GLASSES AND MELTS - HIGH-TEMPERATURE P-31 NMR-STUDY OF THE SYSTEM PHOSPHORUS-SELENIUM [J].
MAXWELL, R ;
ECKERT, H .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1993, 115 (11) :4747-4753
[8]   CHEMICAL-EQUILIBRIA IN GLASS-FORMING MELTS - HIGH-TEMPERATURE P-31 AND SE-77 NMR OF THE PHOSPHORUS SELENIUM SYSTEM [J].
MAXWELL, R ;
ECKERT, H .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1994, 116 (02) :682-689
[9]   MOLTEN-STATE KINETICS IN GLASS-FORMING SYSTEMS - A HIGH-TEMPERATURE NMR-STUDY OF THE SYSTEM PHOSPHORUS-SELENIUM [J].
MAXWELL, R ;
ECKERT, H .
JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (13) :4768-4778
[10]   Nuclear magnetic resonance (NMR) studies of the local structure of phosphorus chalcogenide glasses: an overview [J].
Mutolo, PF ;
Witschas, M ;
Regelsky, G ;
Guenne, JSAD ;
Eckert, H .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1999, 256 :63-72