学术
用聚合物-金属复合物法合成BiSrCaCuO超导体的研究
梁茹[1] 陈学信[2] 林尚安[2]
[1]广东省生产力促进中心,广东广州510070 [2]中山大学化学化工学院,广东广州510275
摘 要:
通过使用聚合物-金属复合物的新型合成工艺,制备出性能优良的BiSrCaCuO超导体,超导体内高Tc和低Tc相并存,其T∞为114.7K,T∞为84.0K.探索了各金属离子的配比、聚合物与无机离子的质量比,以及各种不同的热处理条件对超导体中高Tc相和低Tc相的比例的影响.对聚合物-金属混合物的前体液进行了结构分析.实验结果表明,聚合物与金属离子形成了复合结构,聚合物-复合物合成工艺具有微观均匀性的特点.[著者文摘]
文章出处:
《广州化学》-2005年30卷3期,11 -1-5,11页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1009-220X（2005）03-0001-05
Synthsis of Bisrcacuo Superconducting Compounds by Polymer-Metal Complex
LIANG Ru, CHEN Xue-xin, LIN Shang-an( 1. Guangdong Productivity Center, Guangzhou 51007, China; 2. School of Chemistry
Abstract:
The superconducting compounds of BiSrCaCuO system have been produced by polymer-metal complex （PMC）. The product exhibits T∞ 114.7K and T∞ 84.0K. X-Ray diffraction shows that high-Te and Iow-Te phases exist together. The variation of high-Te phase fraction depends on the metal-ion composition, calcinations temperature and time of the pellet. Effects of preparation condition and microstructure on the superconducting properties have been investigated. Based on the experimental results a conclusion can be drawn that the polymer in PMC approach plays a paramount role in fabrication with Bi, Sr, Ca and Cu, and preparation of the highly homogeneous samples.
Key words:
superconducting compounds, BiSrCaCuO, polymer-metal complex
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