Development ofa synthesis technique and characterization of Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+/spl delta// whiskers
Development ofa synthesis technique and characterization of Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+/spl delta// whiskers
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Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8 /spl delta//晶须的合成技术和表征的开发
DOI：
10.1109/77.919655
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
K. Togano
中科院分区：
文献类型：
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作者：
T. Hatano;Y. Takano;Akihiro Fukuyo;S. Arisawa;A. Ishii;K. Togano
研究了Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+/spl δ//单晶晶须的合成工艺。用熔融急冷法制备了Bi-Sr-Ca-Cu-O（阳离子比3：2：2：4）玻璃化片，并在1100-1200/spl ℃快速急冷。通过原位高温X射线衍射分析和原位高温显微镜观察，研究了Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+/spl delta//晶须的生长条件和生长机理。发现晶须在低于熔点10-40度的温度下以部分熔融状态生长。结果表明，Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+/spl δ//晶须在其底部以传统的液相生长机制生长。
A synthesis technique of Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+/spl delta// single-crystal whiskers has been studied. The whiskers were synthesized by annealing melt-quenched glassy Bi-Sr-Ca-Cu-O (3:2:2:4 in cationic ratio) plates, which were rapidly quenched from 1100-1200/spl deg/C. The growth condition and mechanism of the Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+/spl delta// whiskers were investigated by an in-situ high-temperature x-ray diffraction analysis and an in-situ high-temperature microscope observation. It was found that the whiskers grow in a partially melted state at a temperature of 10-40 degrees below the melting point. The result obtained demonstrates that Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+/spl delta// whiskers grow at their bottom by the conventional liquid-phase growth mechanism, as was proposed by Matsubara et al.