PHYSICAL CHARACTERIZATION AND VIBRATIONAL SPECTROSCOPY OF BI(PB) CUPRATE 2212 CERAMICS PREPARED BY SOL-GEL

被引：15

作者：

BENDOR, L

SZERER, MY

BLUMBERG, G

GIVAN, A

BORJESSON, L

HONG, LV

机构：

[1] CHEM PHYS & BIOPHYS INST,TALLINN EE0001,ESTONIA,USSR

[2] CHALMERS UNIV TECHNOL,S-41296 GOTHENBURG,SWEDEN

来源：

PHYSICA C | 1992年 / 200卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(92)90396-T

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Samples of bismuth cuprate with and without lead substitution were prepared by the sol-gel method. The general formula was Bi2-xPbxSr2CaCu2O8+delta, where 0 less-than-or-equal-to x less-than-or-equal-to 0.6. The samples were characterized by X-ray diffraction (XRD), electron probe microanalysis (EPMA), magnetic susceptibility, Raman spectroscopy and IR reflectance. Regarding homogeneity, density, purity and superconductivity, optimal behavior was found x = 0.2-0.4. An increase of hole concentration in the CUO2-planes with Pb2+/Bi3+ ratio was observed from the optical data. The Raman spectra modifications with lead substitution are discussed. Evidence of the interaction between CuO2-Plane hole continuum and 150 cm-1 IR active modes was found.

引用

页码：418 / 424

页数：7

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