The kinetics of YBa2Cu3O7-y formation

被引：2
|
作者：
Kofanova, N [1 ]
Kogan, V [1 ]
Kupriyanov, M [1 ]
机构：
[1] Rostov State Univ, Dept Phys, Rostov On Don 344090, Russia
来源：
SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2001年 / 14卷 / 07期
关键词：
D O I：
10.1088/0953-2048/14/7/305
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The kinetics of synthesis was studied in situ on an x-ray diffractometer by the time and temperature dependences of concentration of the formed YBa2Cu3O7-y (YBCO) phase. The largest synthesis rate is achieved at 750-780 degreesC. The effective activation energy is minimum at 700 degreesC: E-a = 20-30 kJ mol(-1). In the synthesized YBCO, the parameters of structure inhomogeneity and the sizes of coherent scattering regions were determined.
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页码：448 / 451
页数：4
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