INVESTIGATION OF THE ELECTRONIC DISTRIBUTION IN THE OCTAHEDRAL SITES OF SOLID C-60 THROUGH THE 260-K ORIENTATIONAL PHASE-TRANSITION

被引:4
作者
DYKES, JW
MOSLEY, WD
STERNE, PA
LIU, JZ
SHELTON, RN
HOWELL, RH
机构
[1] LAWRENCE LIVERMORE NATL LAB,DEPT CHEM & MAT,LIVERMORE,CA 94551
[2] LAWRENCE LIVERMORE NATL LAB,DEPT PHYS,LIVERMORE,CA 94551
基金
美国国家科学基金会;
关键词
D O I
10.1016/0009-2614(94)01315-M
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
We have investigated the electronic distribution in the octahedral sites of solid C60 through the 260 K orientational phase transition using temperature-dependent positron lifetime measurements on single crystals. In addition to a gradual temperature-dependent change in positron lifetime, we observe a sharp discontinuity at 260 K, whose size is consistent with that expected from the volume change at the transition. We also examined bulk atmospheric contamination effects on solid C60. Samples exposed only to air show no detectable positron lifetime change, but a slight change is observed in samples exposed to both air and light.
引用
收藏
页码:22 / 26
页数:5
相关论文
共 16 条
[1]   INTERCALATION OF MOLECULAR-SPECIES INTO THE INTERSTITIAL SITES OF FULLERENE [J].
ASSINK, RA ;
SCHIRBER, JE ;
LOY, DA ;
MOROSIN, B ;
CARLSON, GA .
JOURNAL OF MATERIALS RESEARCH, 1992, 7 (08) :2136-2143
[2]   NEUTRON-SCATTERING STUDIES OF C-60 AND ITS COMPOUNDS [J].
COPLEY, JRD ;
NEUMANN, DA ;
CAPPELLETTI, RL ;
KAMITAKAHARA, WA .
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1992, 53 (11) :1353-1371
[3]   CRYSTAL-STRUCTURE AND BONDING OF ORDERED C60 [J].
DAVID, WIF ;
IBBERSON, RM ;
MATTHEWMAN, JC ;
PRASSIDES, K ;
DENNIS, TJS ;
HARE, JP ;
KROTO, HW ;
TAYLOR, R ;
WALTON, DRM .
NATURE, 1991, 353 (6340) :147-149
[4]   EFFECTS OF PRESSURE AND STRESS ON C60 FULLERITE TO 20 GPA [J].
DUCLOS, SJ ;
BRISTER, K ;
HADDON, RC ;
KORTAN, AR ;
THIEL, FA .
NATURE, 1991, 351 (6325) :380-382
[5]  
DWORKIN A, 1991, CR ACAD SCI II, V312, P979
[6]  
DWORKIN A, 1991, CR ACAD SCI II, V313, P1017
[7]   AN INVESTIGATION OF PHOTOASSISTED DIFFUSION OF OXYGEN IN SOLID C-60 FILMS USING RESONANT ALPHA-SCATTERING [J].
ELOI, CC ;
ROBERTSON, JD ;
RAO, AM ;
ZHOU, P ;
WANG, KA ;
EKLUND, PC .
JOURNAL OF MATERIALS RESEARCH, 1993, 8 (12) :3085-3089
[8]   A DOUBLE-TEMPERATURE-GRADIENT TECHNIQUE FOR THE GROWTH OF SINGLE-CRYSTAL FULLERITES FROM THE VAPOR-PHASE [J].
HALUSKA, M ;
KUZMANY, H ;
VYBORNOV, M ;
ROGL, P ;
FEJDI, P .
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1993, 56 (03) :161-167
[9]   STRUCTURE, DYNAMICS AND ORDERING TRANSITION OF SOLID C-60 [J].
HEINEY, PA .
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1992, 53 (11) :1333-1352
[10]   DISCONTINUOUS VOLUME CHANGE AT THE ORIENTATIONAL-ORDERING TRANSITION IN SOLID C-60 [J].
HEINEY, PA ;
VAUGHAN, GBM ;
FISCHER, JE ;
COUSTEL, N ;
COX, DE ;
COPLEY, JRD ;
NEUMANN, DA ;
KAMITAKAHARA, WA ;
CREEGAN, KM ;
COX, DM ;
MCCAULEY, JP ;
SMITH, AB .
PHYSICAL REVIEW B, 1992, 45 (08) :4544-4547