Synthesis of Ba<sub>2</sub>YCu<sub>3</sub>O<sub>7–δ</sub>Superconductor through Organometallic Route
作者:Shin-ichi Hirano、Takashi Hayashi、Masashi Miura、Hiroyuki Tomonaga
DOI:10.1246/bcsj.62.888
日期:1989.3
The chemical synthesis of a high-Tc Ba2YCu3O7–δ superconductor was investigated through the organometallic route, using Ba metal, Y(OPri)3, and Cu–alkoxides or Cu–acetylacetonate as starting materials. Chemically homogeneous submicron powders of single phase Ba2YCu3O7–δ were successfully prepared at 750 °C by controlled partial hydrolysis of metal alkoxides. The utilization of ozone for favorable decomposition
使用金属钡、Y(OPri)3 和铜醇盐或铜乙酰丙酮化物作为起始材料,通过有机金属途径研究了高 Tc Ba2YCu3O7-δ 超导体的化学合成。通过控制金属醇盐的部分水解,在 750 °C 下成功制备了化学均匀的单相 Ba2YCu3O7-δ 亚微米粉末。发现利用臭氧促进 Ba2YCu3O7-δ 前驱体的有利分解对抑制 BaCO3 的形成和将 Ba2YCu3O7-δ 的形成温度降低至约 650 °C 具有显着效果。单相 Ba2YCu3O7-δ 陶瓷在大约 83 K(Tc 端)时表现出超导性。