PHASE-TRANSITIONS IN KC60 - DIMER FORMATION VIA RAPID QUENCHING

被引：111

作者：

ZHU, Q

COX, DE

FISCHER, JE

机构：

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

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

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.51.3966

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A metastable orthorhombic form of KC60 is identified from synchrotron x-ray powder-diffraction measurements. Structure analysis reveals C60 dimers with a 9.34 center-to-center separation. This structure competes with equilibrium phase separation (α-C60 plus K3C60) and with polymer formation; it is obtained by quenching from above 420 K to 298 K and immediately cooling below 270 K. If the polymer is indeed a one-dimensional metal, the dimer structure should be a Peierls insulator. © 1995 The American Physical Society.

引用

页码：3966 / 3969

页数：4

共 20 条

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