PHONON CHARACTERIZATION OF BI2(SR1-XCAX)2CUO6+DELTA BY INFRARED AND RAMAN-SPECTROSCOPY

被引:75
作者
POPOVIC, ZV [1 ]
THOMSEN, C [1 ]
CARDONA, M [1 ]
LIU, R [1 ]
STANISIC, G [1 ]
KREMER, R [1 ]
KONIG, W [1 ]
机构
[1] INST PHYS,YU-11000 BELGRADE,YUGOSLAVIA
关键词
BISMUTH COMPOUNDS - OXIDES - PHONONS - SPECTROSCOPY; INFRARED; -; SPECTROSCOPY; RAMAN;
D O I
10.1016/0038-1098(88)90547-9
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We report the preparation, X-Ray diffraction, electrical, and magnetic measurements as well as infrared and Raman spectra of nearly single phase Bi-Ca-Sr-Cu-O (BCSCO-1) samples. The phase has an orthorhombic crystal structure with unit cell parameters a equals 5. 388 A, b equals 5. 381 A, c equals 24. 408 A, and T//c larger than 50 K. Eight ir- and five Raman modes were observed. The temperature dependence of phonon features exhibits an anomalous behavior for the ir-active phonon at approx. 490 cm** minus **1. The mode assignment is given on the basis of the vibrational properties of the initial oxides and of CuO//5 pyramides in YBa//2Cu//3O//6.
引用
收藏
页码:965 / 969
页数:5
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