U.S.-Germany Cooperative Research to Increase Flux Pinning in Bismuth-Based High Temperature Superconductors

该奖项支持Eric Hellstrom教授和威斯康星大学的初级同事兼研究生与斯图加特大学非金属无机材料研究所的P Majewski博士及其团队在材料研究方面进行合作。他们的研究目标是增加铋系高温超导体中的磁通钉扎。他们的方法将是通过操纵铋系超导体的化学成分和改变热处理工艺，在银套铋基带上创建磁通钉扎中心。这项合作将该美国集团在制造、加工和表征长长银套高温超导体所涉及的科学问题上的专业知识与斯图加特大学产生的铋系中相关系的详细知识结合在一起。增加磁通钉扎将提高这些超导体在开尔文30度时的电流密度，达到极大地扩展它们的应用范围的水平。美国和德国集团的互补专业知识创造了一种独特的合格合作，以实现这一宝贵目标。

This award supports Professor Eric Hellstrom and a junior colleague and graduate student of the University of Wisconsin to collaborate in materials research with Dr. P Majewski and his group at the Institute for Non-Metallic Inorganic Materials of the University of Stuttgart. The objective of their research is to increase the flux pinning in bismuth-based high temperature superconductors. Their approach will be to create flux pinning centers in silver sheathed bismuth-based tape by manipulating the chemistry of the bismuth-based superconductor and varying the thermal processing. The collaboration brings together the expertise of the U.S. group in the scientific issues involved in fabricating, processing and characterizing long lengths of silver-sheathed high temperature superconductors, with the detailed knowledge of phase relations in the bismuth-based system generated at the University of Stuttgart. Increased flux pinning will raise the current density that these superconductors can carry at thirty degrees Kelvin to a level that will greatly expand the applications in which they can be used. The complementary expertise of the U.S. and German groups creates a uniquely qualified collaboration to pursue this valuable objective.