AN EXAFS STUDY ON THE LOCAL-STRUCTURE IN THE NA2CSC60 SUPERCONDUCTOR

被引：4

作者：

FUJIMOTO, T

KUBOZONO, Y

MAEDA, H

ISHIDA, H

FURUKAWA, Y

KASHINO, S

YAMAZAKI, H

机构：

[1] OKAYAMA UNIV,FAC SCI,DEPT CHEM,OKAYAMA 700,JAPAN

[2] HIROSHIMA UNIV,FAC SCH EDUC,HIROSHIMA 734,JAPAN

来源：

PHYSICA C | 1995年 / 249卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(95)00274-X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Cs K-edge extended X-ray absorption fine structure (EXAFS) spectra of Na2CsC60 are measured in order to determine the local structure around the Cs+ ion. The structural change accompanied by the order-disorder phase transition at 299 K is investigated in detail on the basis of the EXAFS spectra at 20, 295 and 317 K. It has been confirmed that Na2CsC60 takes a face-centered-cubic structure at 317 K, while it takes a simple-cubic structure at 20 and 295 K. It has also been found that the Cs+ ion at the octahedral site is not located out-of-center of the octahedral site but is located on the center.

引用

页码：5 / 11

页数：7

共 18 条

[1]

FUJIMOTO T, 1995, SULLERENE SCI TECHN, V3, P69

[2]

FUJIMOTO T, IN PRESS FULLERENE S

[3] LOCATIONS OF RB IONS IN A(2)RBC(60) (A=NA,K) SUPERCONDUCTORS [J].

HIROSAWA, I ;

KIMURA, H ;

MIZUKI, J ;

TANIGAKI, K .

PHYSICAL REVIEW B, 1995, 51 (05) :3038-3041

[4] NOTE ON THE K EXTENDED X-RAY ABSORPTION FINE-STRUCTURE DEBYE-WALLER FACTOR [J].

ISHII, T .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1992, 4 (40) :8029-8034

[5] C-60 ORIENTATIONAL ORDERING IN SUPERCONDUCTING NA2RBC60 [J].

KNIAZ, K ;

FISCHER, JE ;

ZHU, Q ;

ROSSEINSKY, MJ ;

ZHOU, O ;

MURPHY, DW .

SOLID STATE COMMUNICATIONS, 1993, 88 (01) :47-50

[6] SOLID C-60 - A NEW FORM OF CARBON [J].

KRATSCHMER, W ;

LAMB, LD ;

FOSTIROPOULOS, K ;

HUFFMAN, DR .

NATURE, 1990, 347 (6291) :354-358

[7] C-60 - BUCKMINSTERFULLERENE [J].

KROTO, HW ;

HEATH, JR ;

OBRIEN, SC ;

CURL, RF ;

SMALLEY, RE .

NATURE, 1985, 318 (6042) :162-163

[8] XAFS STUDIES OF THE OXIDATION PROCESS IN RBXCSYC60 (X=3, Y=0 AND X=2, Y=1) [J].

KUBOZONO, Y ;

FUJIMOTO, T ;

MAEDA, H ;

HIRANO, A ;

KASHINO, S ;

OSHIMA, K ;

YAMAZAKI, H ;

ISHIDA, H ;

ISHII, T ;

EMURA, S ;

KATO, K .

PHYSICA C, 1993, 217 (1-2) :21-26

[9] TEMPERATURE-DEPENDENCE OF LOCAL-STRUCTURE OF RB2CSC60 SUPERCONDUCTOR [J].

MAEDA, H ;

KUBOZONO, Y ;

ISHII, T ;

FUJIMOTO, T ;

ISHIDA, H ;

EMURA, S ;

KASHINO, S ;

OSHIMA, K ;

YAMAZAKI, H .

PHYSICA C, 1994, 234 (3-4) :385-391

[10] ACCURATE BOND LENGTH DETERMINATION BY EXAFS METHOD [J].

MAEDA, H .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1987, 56 (08) :2777-2787

← 1 2 →