Preparation of c-axis oriented YBa2Cu3O7 polycrystalline ceramics by sol-gel method

被引：3

作者：

Wang, Wenzhang ^{[1
]}

Chen, Qingming ^{[1
]}

Cui, Qi ^{[1
]}

Ma, Ji ^{[1
]}

Zhang, Hui ^{[1
]}

机构：

[1] Kunming Univ Sci & Technol, Fac Mat Sci & Engn, Kunming 650093, Peoples R China

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2015年 / 511卷

基金：

美国国家科学基金会;

关键词：

YBa2Cu3O7; Sol-gel; c-axis preferred orientation; SUPERCONDUCTORS;

D O I：

10.1016/j.physc.2015.02.003

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

YBa2Cu3O7 powders and ceramics with c-axis preferred orientation were synthesized by sol-gel method. The pure phase powders were obtained when calcined between 800 and 930 degrees C, and the ceramics were sintered at 950 degrees C. It was found that c-axis orientated ceramics were obtained only when the powders were calcined at 930 degrees C. The X-ray diffraction patterns show that the relative intensities of c-axis (00l) peaks are much stronger than that of the standard pattern. The surface morphology own an obvious layered structure and the grains are platelike grown. The transition temperature T-C(onset) is 93.67 K with a transition width Delta T-c of 2.1 K. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：1 / 3

页数：3

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