'Low-pressure' orthorhombic phase formed from pressure-treated C-60

被引:59
作者
Agafonov, V
Davydov, VA
Kashevarova, LS
Rakhmanina, AV
KahnHarari, A
Dubois, P
Ceolin, R
Szwarc, H
机构
[1] RUSSIAN ACAD SCI,INST HIGH PRESSURE PHYS,TROITSK 142092,MOSCOW REGION,RUSSIA
[2] ECOLE NATL SUPER CHIM,CNRS,URA 1466,LAB CHIM APPL ETAT SOLIDE,F-75231 PARIS 05,FRANCE
[3] UNIV PARIS 11,CNRS,URA D 1104,LAB CHIM PHYS MAT AMORPHES,F-91405 ORSAY,FRANCE
关键词
D O I
10.1016/S0009-2614(97)00072-9
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
X-ray and electron diffraction and Raman spectroscopy have shown that the solid formed by a pressure-temperature treatment of C-60 at 1.5 GPa-723 K has an orthorhombic structure O'. It may be considered that phases O' and O, the previously known orthorhombic phase formed at 8 GPa-573 K, are the same so that our pressure-temperature treatment provides ''the optimal way of obtaining the linear-chain orthorhombic fullerene phase''. However, differences in the respective spectra of these two phases led us to re-examine the structure of the previously described phase O: it is found that a rhombohedral structure fits the experimental X-ray data at least as well as an orthorhombic one does. In any case, phase O' may be an intermediary for the formation of the tetragonal high-pressure modification.
引用
收藏
页码:193 / 198
页数:6
相关论文
共 10 条
[1]   INDEXING OF POWDER DIFFRACTION PATTERNS FOR LOW-SYMMETRY LATTICES BY THE SUCCESSIVE DICHOTOMY METHOD [J].
BOULTIF, A ;
LOUER, D .
JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1991, 24 (pt 6) :987-993
[2]  
Davydov VA, 1996, MOL CRYST LIQ CRYS C, V7, P285
[3]   NEW PHASES OF C-60 SYNTHESIZED AT HIGH-PRESSURE [J].
IWASA, Y ;
ARIMA, T ;
FLEMING, RM ;
SIEGRIST, T ;
ZHOU, O ;
HADDON, RC ;
ROTHBERG, LJ ;
LYONS, KB ;
CARTER, HL ;
HEBARD, AF ;
TYCKO, R ;
DABBAGH, G ;
KRAJEWSKI, JJ ;
THOMAS, GA ;
YAGI, T .
SCIENCE, 1994, 264 (5165) :1570-1572
[4]  
Khvostancev L. G., 1977, High Temp.-High Pressures, V9, P637
[5]   TRANSFORMATION OF C-60 FULLERENES INTO A SUPERHARD FORM OF CARBON AT MODERATE PRESSURE [J].
KOZLOV, ME ;
HIRABAYASHI, M ;
NOZAKI, K ;
TOKUMOTO, M ;
IHARA, H .
APPLIED PHYSICS LETTERS, 1995, 66 (10) :1199-1201
[6]   POLYMERIZED FULLERITE STRUCTURES [J].
NUNEZREGUEIRO, M ;
MARQUES, L ;
HODEAU, JL ;
BETHOUX, O ;
PERROUX, M .
PHYSICAL REVIEW LETTERS, 1995, 74 (02) :278-281
[7]   PHOTOINDUCED POLYMERIZATION OF SOLID C-60 FILMS [J].
RAO, AM ;
ZHOU, P ;
WANG, KA ;
HAGER, GT ;
HOLDEN, JM ;
WANG, Y ;
LEE, WT ;
BI, XX ;
EKLUND, PC ;
CORNETT, DS ;
DUNCAN, MA ;
AMSTER, IJ .
SCIENCE, 1993, 259 (5097) :955-957
[8]   POLYMERIC FULLERENE CHAINS IN RBC60 AND KC60 [J].
STEPHENS, PW ;
BORTEL, G ;
FAIGEL, G ;
TEGZE, M ;
JANOSSY, A ;
PEKKER, S ;
OSZLANYI, G ;
FORRO, L .
NATURE, 1994, 370 (6491) :636-639
[9]   Pressure-induced polymerization of fullerenes: A comparative study of C-60 and C-70 [J].
Sundar, CS ;
Sahu, PC ;
Sastry, VS ;
Rao, GVN ;
Sridharan, V ;
Premila, M ;
Bharathi, A ;
Hariharan, Y ;
Radhakrishnan, TS ;
Muthu, DVS ;
Sood, AK .
PHYSICAL REVIEW B, 1996, 53 (13) :8180-8183
[10]   Chemical modifications of C-60 under the influence of pressure and temperature: From cubic C-60 to diamond [J].
Szwarc, H ;
Davydov, VA ;
Plotianskaya, SA ;
Kashevarova, LS ;
Agafonov, V ;
Ceolin, R .
SYNTHETIC METALS, 1996, 77 (1-3) :265-272