High-pressure twisting of tetrahedra and amorphization in α-quartz

被引:11
作者
Ovsyuk, NN [1 ]
Goryainov, SV [1 ]
机构
[1] Russian Acad Sci, Inst Mineral & Petrol, Novosibirsk 630090, Russia
来源
PHYSICAL REVIEW B | 1999年 / 60卷 / 21期
关键词
D O I
10.1103/PhysRevB.60.14481
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
It is discovered that the major contribution to the distortions of the tetrahedra in the alpha-quartz at high pressure is their twisting. It is shown that just these twisting vibrational,modes lead to instability resulting in amorphization of the structure. [S0163-1829(99)00745-6].
引用
收藏
页码:14481 / 14484
页数:4
相关论文
共 25 条
[1]   VARIOUS POSSIBILITIES FOR FORMATION OF INCOMMENSURATE SUPERSTRUCTURE NEAR THE ALPHA-BETA-TRANSITION IN QUARTZ [J].
ASLANYAN, TA ;
LEVANYUK, AP ;
VALLADE, M ;
LAJZEROWICZ, J .
JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1983, 16 (35) :6705-6712
[2]   Theoretical study of a five-coordinated silica polymorph [J].
Badro, J ;
Teter, DM ;
Downs, RT ;
Gillet, P ;
Hemley, RJ ;
Barrat, JL .
PHYSICAL REVIEW B, 1997, 56 (10) :5797-5806
[3]   ELASTIC INSTABILITY IN ALPHA-QUARTZ UNDER PRESSURE [J].
BINGGELI, N ;
CHELIKOWSKY, JR .
PHYSICAL REVIEW LETTERS, 1992, 69 (15) :2220-2223
[4]   PRESSURE-INDUCED AMORPHIZATION, ELASTIC INSTABILITY, AND SOFT MODES IN ALPHA-QUARTZ [J].
BINGGELI, N ;
KESKAR, NR ;
CHELIKOWSKY, JR .
PHYSICAL REVIEW B, 1994, 49 (05) :3075-3081
[5]   STRUCTURAL TRANSFORMATION OF QUARTZ AT HIGH-PRESSURES [J].
BINGGELI, N ;
CHELIKOWSKY, JR .
NATURE, 1991, 353 (6342) :344-346
[6]   PRESSURE-DEPENDENCE OF THE STRUCTURAL-PROPERTIES OF ALPHA-QUARTZ NEAR THE AMORPHOUS TRANSITION [J].
CHELIKOWSKY, JR ;
TROULLIER, N ;
MARTINS, JL ;
KING, HE .
PHYSICAL REVIEW B, 1991, 44 (02) :489-497
[7]  
Dolino G., 1982, FERROELECTRICS, V43, P77
[8]   CRYSTAL-STRUCTURES OF THE LOW-TEMPERATURE QUARTZ-TYPE PHASES OF SIO2 AND GEO2 AT ELEVATED PRESSURE [J].
GLINNEMANN, J ;
KING, HE ;
SCHULZ, H ;
HAHN, T ;
LAPLACA, SJ ;
DACOL, F .
ZEITSCHRIFT FUR KRISTALLOGRAPHIE, 1992, 198 (3-4) :177-212
[9]   MECHANISM OF ALPHA-BETA-PHASE TRANSFORMATION OF QUARTZ [J].
GRIMM, H ;
DORNER, B .
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1975, 36 (05) :407-413
[10]   HIGH-PRESSURE CRYSTAL-CHEMISTRY AND AMORPHIZATION OF ALPHA-QUARTZ [J].
HAZEN, RM ;
FINGER, LW ;
HEMLEY, RJ ;
MAO, HK .
SOLID STATE COMMUNICATIONS, 1989, 72 (05) :507-511