Oxygen desorption activation energy of YBa2Cu3O7-x obtained by thermogravimetry with different heating rates

被引：9

作者：

Zhu, ZL

Yang, DL

Guo, YQ

Liu, QQ

Gao, ZS

Hu, X ^{[1
]}

机构：

[1] Zhengzhou Univ, Dept Phys, Zhengzhou 450052, Peoples R China

[2] Zhengzhou Univ, Phys Mat Lab, Zhengzhou 450052, Peoples R China

[3] Zhengzhou Univ, Dept Chem, Zhengzhou 450052, Peoples R China

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2002年 / 383卷 / 1-2期

关键词：

YBa2Cu3O7-x; thermal analysis; activation energy;

D O I：

10.1016/S0921-4534(02)01318-7

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The oxygen desorption activation energy of a YBa2Cu3O7-x specimen was determined by thermogravimetry (TG) and differential thermogravimetry (DTG) curves with different heating rates. It shows that there are clear evidences that the behavior of TG, DTG, and desorption activation energy have some relations with the oxygen stoichiometry of the specimen when its temperature changes from 500 to 800 degreesC. In the orthorhombic phase, the desorption activation energy has an obvious increase with the increase of temperature, while it varies smoothly in the tetragonal phase as the temperature increases. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：169 / 174

页数：6

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