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Study on the oxide superconductors and related materials using mineralogical and crystallographical techniques

利用矿物学和晶体学技术研究氧化物超导体及相关材料

基本信息

批准号：
01302020
负责人：
SUENO Shigeho
金额：
$ 1.73万
依托单位：
University of Tsukuba
依托单位国家：
日本
项目类别：
Grant-in-Aid for Co-operative Research (A)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1991
项目状态：
已结题

项目摘要

Researchers in the mineralogical fields have specific knowledge and unique experimental techniques on the structure analysis and chemical composition analysis for the study of the multi-components^*multi -phase materials which involves complicated behaviors, such as phase transition, twinning, non-stoichiometry, modulated structure, etc. Ibis cooperative research project is to apply their specific techniques and knowledge on the study of the oxide super-cqnduttors. Total of 21 researchers from different Institutes becomes the member of this project, and they cooperatively studied the Y-series and Bi series superconductors. Last three years, they had two-days scheduled scientific meeting once a year at Tsukuba area, central Japan, and invited several superconductor researchers from different scientific fields during this meeting. This meeting was quite useful for collecting the latest informations on the research of superconductors, and discussing about the future cooperative researches among the members. The project was quite successful for encouraging bashful mineralogist and crystallographer for participating in the superconductor study. Cooperative studies also went nicely. As example, Komatsu has synthesized Bi-series crystals under a high-temperature microscope and recorded their growth process using VTR. Then, he asked Horiuchi to identify the species of his crystals using a micro-beam X-ray diffractometer developed by Horiuchi, and he also asked Sueno to carry out the quantitative analysis including oxygen about his crystals. Putting the results of these experiments together, Komatsu has reported a reliable, phase diagram of Bi-series. The other interesting cooperative study were carried out in this project and obtained several important results, such as, synthesis under high-pressure conditions, and development, of a new ion-gun for SIMS for studying the diffusion rate of oxygen in superconductors.

矿物学领域的研究人员在结构分析和化学成分分析方面具有独特的知识和实验技术，可以研究涉及相变、孪晶、非化学计量、调制结构等复杂行为的多组分多相材料，Ibis的合作研究项目是将他们的特殊技术和知识应用于氧化物超导体的研究。来自不同研究所的21名研究人员成为该项目的成员，他们合作研究了Y系列和Bi系列超导体。最近三年，他们每年在日本中部的筑波地区举行一次为期两天的科学会议，并邀请了来自不同科学领域的多位超导研究人员参加会议。这次会议对于收集超导体研究的最新信息，以及讨论成员之间未来的合作研究非常有用。该项目非常成功，鼓励了有兴趣的矿物学家和晶体学家参与超导体研究。合作研究也进展顺利。例如，小松在高温显微镜下合成了Bi系列晶体，并使用VTR记录了它们的生长过程。然后，他要求堀内使用堀内开发的微束X射线衍射仪识别他的晶体的种类，他还要求末野对他的晶体进行包括氧在内的定量分析。将这些实验的结果放在一起，Komatsu报告了一个可靠的Bi系相图。在该项目中进行了其他有趣的合作研究，并取得了几项重要成果，例如在高压条件下合成和开发用于西姆斯的新离子枪，用于研究超导体中氧的扩散速率。