PRESSURE-INDUCED POLYMERIZATION OF TERNARY FULLERIDE SUPERCONDUCTORS

被引：31

作者：

ZHU, Q

机构：

[1] Physics Department, Brookhaven National Laboratory, Upton

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.52.R723

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A reversible conversion of the cubic trianionic fulleride superconductors Na2RbC60 and Na2CsC60 to orthorhombic structures is observed at modest pressures (less than or equal to 3 kbar) and ambient temperature. Structure refinement based on synchrotron powder x-ray profiles reveals polymer chains with 9.35 Angstrom intermolecular separation, comparable to that in the metastable monoanionic dimer and polymer phases of KC60 and RbC60. In contrast, K3C60, Rb3C60, etc. are stable to much higher pressures due to their larger lattice constants at ambient pressure.

引用

页码：R723 / R726

页数：4

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