@article{oai:air.repo.nii.ac.jp:00000710,
 author = {Lu, X. Y. and Nagata, A. and Sugawara, K. and Kamada, S. and Lu, Xiaoye},
 issue = {1-4},
 journal = {Physica C},
 month = {May},
 note = {The melting and solidification processes of the Bi1.8Pb0.4Sr1.9Ca2.1Cu3.5Ox in various oxygen atmospheres have been observed in situ using a high temperature optical microscopy. In the melting process, the samples began to melt at 788℃ in N2, 862℃ in 8％O2+N2, 880℃ in air, 895℃ in O2. Many dark needle-like crystals (Sr,Ca)2CuO3 and the white bar-like crystals (Sr,Ca)CuO2 appeared in the liquid phase. When the temperature was raised, (Sr,Ca)CuO2 first melted and then (Sr,Ca)2CuO3 melted peritectically ((Sr,Ca)2CuO3 →CaO+L). In the solidification process, two peritectic reactions CaO+L→(Sr,Ca)2CuO3 and (Sr,Ca)2CuO3 + L→Bi-2212 were observed in the atmospheres of air, 8％O2+N2, and O2, whereas in N2, only a reaction of  L→ Bi-2201 was observed.},
 pages = {313--320},
 title = {Direct observation of melting and solidification of Bi1.8Pb0.4Sr1.9Ca2.1Cu3.5Ox in various oxygen atmospheresby high temperature optical microscopy},
 volume = {354},
 year = {2001}
}