Effect of Eu(Pr) substitution at Ba sites on microstructure and superconductivity in EuBa2Cu3O7-δ ceramics

被引：0

作者：

Peng, ZS ^{[1
]}

Wang, ZH

机构：

[1] Suzhou Normal Coll, Dept Phys, Suzhou 234000, Peoples R China

[2] Nanjing Univ, Dept Phys, Nanjing 214100, Peoples R China

[3] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 214100, Peoples R China

来源：

SPECTROSCOPY AND SPECTRAL ANALYSIS | 2004年 / 24卷 / 04期

关键词：

high-temperature superconduction; structure transition; method of element substitution;

D O I：

暂无

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Ceramics of Eu1+xBa2-xCu3O7-delta with x = 0.0, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5 and EuBa2-xPrxCu3O7-delta with x = 0.0, 0.05, 0.1, 0.2, 0.3, 0.4 have been synthesized and investigated by X-ray diffraction, resistivity, and Raman spectroscopy. The results show that the transition of crystal structure from orthorhombic to tetragonal occurs and the critical temperature decreases with the increase in doping concentration x. The Raman spectra show that the frequency of the Cu(1)-O(4) stretching mode and the Cu(2)-O(2, 3) out-of-phase mode shifts to higher wave number with increasing doping concentration x.

引用

页码：451 / 454

页数：4