OXYGEN NONSTOICHIOMETRY OF THE (ND, CE)2CUO4-DELTA SYSTEM

被引：50

作者：

SUZUKI, K

KISHIO, K

HASEGAWA, T

KITAZAWA, K

机构：

[1] Department of Industrial Chemistry, University of Tokyo, Hongo, Bunkyo-ku, Tokyo

来源：

PHYSICA C | 1990年 / 166卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(90)90416-C

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Oxygen nonstoichiometry of the electron-doped superconductor Nd1.85Ce0.15CuO4-δ and nondoped Nd2CuO4-δ was determined using thermogravimetry and chemical titration analysis. The oxygen deficiency of Nd2CuO4-δ at 900°C and PO2=10-3 atm was approximately 0.04, while that of Nd1.85Ce0.15CuO4-δ was about 0.008, both being substantially smaller than that of Ba2YCu3O7-δ. In this system, however, a small amount of oxygen defect seems to play an essential role in the manifestations of superconductivity. © 1990.

引用

页码：357 / 360

页数：4

共 8 条

[1]

DEZOUBOV N, 1963, ATLAS EQUILIBRES ELE, P194

[2] STUDY ON CHEMICAL DIFFUSION OF OXYGEN IN BA2YCU3O7-DELTA [J].