Investigation into Feasibility of Measuring Specific Heat from 50K to 700K of Thin Films of Magnetic and Superconducting Materials

测量磁性和超导材料薄膜50K至700K比热的可行性研究

• 批准号: 8810374
• 负责人: Frances Hellman
• 金额: $ 2.1万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-07-15 至 1990-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8810374&HistoricalAwards=false
• 关键词: Investigation; into; Feasibility; Measuring; Specific

The PI wishes to study the specific heat of thin films of superconducting and magnetic materials between 50 and 700K. In particular, he wishes to examine the new oxide superconductor, YBa2 Cu30x and its related compounds, in this temperature range for the purpose of studying both the superconducting transition near 95K and the resistive anomalies frequently observed at higher temperatures. He wishes to study the amorphous rare earth-transition metal alloys at temperatures between room temperature and 700K to look for signs of polymorphism in the amorphous phase as potentially manifested by different paths to crystallinity as well as to examine their specific heat through the Curie point. Finally, he wishes to study the formation of the amorphous phase at the interface between certain crystalline materials.

PI希望研究超导和磁性材料薄膜在50-700K之间的比热。特别是，他希望在这个温度范围内研究新的氧化物超导体YBa2Cu30x及其相关化合物，以便研究95K附近的超导转变和在更高温度下经常观察到的电阻异常。他希望在室温和700K之间的温度下研究非晶态稀土过渡金属合金，以寻找非晶相中潜在的多晶性迹象，这可能表现为不同的结晶度途径，以及通过居里点检查它们的比热。最后，他希望研究在某些晶体材料之间的界面处非晶相的形成。