Copper defects and conductivity in Bi-Pb-Sr-Ca-Cu-O glasses

被引：0

作者：

Guskos, N

Gazda, M

Typek, J

Likodimos, V

Wabia, M

Fuks, H

Sadowski, W

机构：

[1] Tech Univ Szczecin, Inst Phys, PL-70310 Szczecin, Poland

[2] Univ Athens, Dept Phys, Solid State Sect, Athens 74784, Greece

[3] Gdansk Univ Technol, Fac Appl Phys & Math, PL-80952 Gdansk, Poland

[4] Natl Tech Univ Athens, Dept Phys, Athens 15780, Greece

来源：

RADIATION EFFECTS AND DEFECTS IN SOLIDS | 2003年 / 158卷 / 1-6期

关键词：

EPR; glasses; copper defects;

D O I：

10.1080/20031042015021000052386

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Glass ceramics of the composition (Bi0.8Pb0.2)(4)Sr3Ca3Cu4O8 prepared by the melt quenching technique and the crystalline phases produced by the rapid thermal annealing have been studied by electrical resistivity and electron paramagnetic resonance (EPR) measurements in the temperature range from liquid helium up to room temperature. The concentration of the EPR active Cu2+ paramagnetic centers decreases as conductivity increases for the glass ceramics and disappears after crystallization and the growth of superconducting phases, similar to bulk high-T-c superconductors. The EPR spectra of both glass and crystallized ceramics after short-time annealing indicate the coexistence of Cu2+ paramagnetic ions and the exchange coupled clusters.

引用

页码：375 / 381

页数：7

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