Tautkus S, Kazlauskas R, Kareiva A
Department of Analytical Chemistry, Department of General and Inorganic Chemistry, Vilnius University, Naugarduko 24, LT-2006 Vilnius, Lithuania.
Talanta. 2000 Jun 21;52(2):189-99. doi: 10.1016/s0039-9140(00)00317-9.
The paper presents the results of studies on thermogravimetric (TG) characterization of precursors and Hg-based superconductors synthesized by the sol-gel method. TG experiments were performed in an oxygen flow in order to understand the decomposition mechanisms of the fabricated gels and to determine the synthesis temperature of the intermediate precursors for the HgBa(2)CaCu(2)O(6+delta), HgBa(2)Ca(2)Cu(3)O(8+delta), and Hg(1-x)Tl(x)Ba(2)Ca(2)Cu(3)O(8+delta) superconductors. The optimum annealing temperature for a desired oxygen content in the superconducting compounds has been established by thermogravimetric measurements. To assist the interpretation of the obtained results the elemental analyses of the synthesized products were performed by AAS and EDS (SEM) methods.
本文介绍了通过溶胶-凝胶法合成的前驱体和汞基超导体的热重（TG）表征研究结果。为了了解所制备凝胶的分解机理并确定HgBa(2)CaCu(2)O(6+δ)、HgBa(2)Ca(2)Cu(3)O(8+δ)和Hg(1-x)Tl(x)Ba(2)Ca(2)Cu(3)O(8+δ)超导体中间前驱体的合成温度，在氧气流中进行了TG实验。通过热重测量确定了超导化合物中所需氧含量的最佳退火温度。为了辅助对所得结果的解释，采用原子吸收光谱法（AAS）和能谱分析法（EDS，扫描电子显微镜）对合成产物进行了元素分析。
