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ID 34145
フルテキストURL
著者
Kubozono, Y. Department of Chemistry, Okayama University
Takabayashi, Y. Department of Chemistry, Okayama University
Kambe, T. Department of Physics, Okayama University
Fujiki, S. Department of Chemistry, Okayama University
Kashino, S. Department of Chemistry, Okayama University
Emura, S. ISIR, Osaka University
抄録

The structure and physical properties of two-dimensional polymeric Na4C60 (body-centered monoclinic, space group I2/m) are studied in a wide temperature region from 12 to 300 K at 1 bar, and in a pressure region up to 53 kbar at 300 K. The temperature dependence of lattice constants suggests a structural anomaly below 100 K where the variation of spin susceptibility is observed from electron spin resonance. The thermal expansion of the unit-cell volume V is smaller than that of monomeric Rb3C60 and K3C60. The compressibility of c is larger than that of a and b, which can be well explained by the repulsion between Na ions. The compressibility of the center-to-center distance in the (10(1) over bar) plane is similar to1/3 times smaller that that in the (101) plane, which can be well explained by the formation of the polymer chains. Further, a possibility of a three-dimensional polymerization is discussed on the basis of the pressure dependence of C-60. . .C-60 distances.

備考
Published with permission from the copyright holder.
This is the institute's copy, as published in Physical Review B, January 2001, Volume 63, Issue 4, Pages 9.
Publisher URL: http://dx.doi.org/10.1103/PhysRevB.63.045418
Direct access to Thomson Web of Science record
Copyright © 2001 The American Physical Society. All rights reserved.
発行日
2001-1
出版物タイトル
Physical Review B
63巻
4号
資料タイプ
学術雑誌論文
言語
English
査読
有り
DOI
Web of Sience KeyUT
Submission Path
physics_general/37