DISCONTINUOUS VOLUME CHANGE AT THE ORIENTATIONAL-ORDERING TRANSITION IN SOLID C-60

被引：167

作者：

HEINEY, PA

VAUGHAN, GBM

FISCHER, JE

COUSTEL, N

COX, DE

COPLEY, JRD

NEUMANN, DA

KAMITAKAHARA, WA

CREEGAN, KM

COX, DM

MCCAULEY, JP

SMITH, AB

机构：

[1] UNIV PENN,RES STRUCT MATTER LAB,PHILADELPHIA,PA 19104

[2] UNIV PENN,DEPT MAT SCI & ENGN,PHILADELPHIA,PA 19104

[3] BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973

[4] NATL INST STAND & TECHNOL,GAITHERSBURG,MD 20899

[5] EXXON RES & ENGN CO,ANNANDALE,NJ 08801

[6] UNIV PENN,DEPT CHEM,PHILADELPHIA,PA 19104

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.45.4544

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

X-ray and neutron-diffraction measurements have been used to study the evolution of the lattice parameter of solid C60 through the orientational-ordering transition. The lattice parameter jumps by +0.044 +/- 0.004 angstrom on heating, indicating a strongly first-order transition. The average isobaric volume thermal-expansion coefficient both above and below the transition is 6.2 +/- 0.2 x 10(-5) K-1. We observe phase coexistence over a 5-K range, but little if any hysteresis.

引用

页码：4544 / 4547

页数：4

共 23 条

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