SYNTHESIS OF BULK SUPERCONDUCTING LA2CUO4 IN AN ELECTROCHEMICAL-CELL

被引：12

作者：

BENNETT, JC

OLFERT, M

SCHOLZ, GA

BOSWELL, FW

机构：

[1] Guelph-Waterloo Program for Graduate Work in Physics, Waterloo Campus, University of Waterloo, Waterloo

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.44.2727

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Superconductivity has been observed in originally semiconducting ceramic samples of La2CuO4 following oxidation in an electrochemical cell at room temperature. After processing, the room-temperature resistivity is lowered by over an order of magnitude and, on cooling below 150 K, acquires a metallic temperature dependence. The superconducting transition occurs near 45 K. Magnetic-susceptibility measurements confirm the bulk nature of the superconductivity. Furthermore, by reversing the polarization of the cell, semiconducting La2CuO4 can again be produced. The homogeneity of the processed samples was verified by x-ray powder diffraction and energy-dispersive x-ray elemental analysis.

引用

页码：2727 / 2731

页数：5

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