Acquisition of a SQUID Magnetometer for the Characterization of Nanostructured Magnetic and Superconducting Materials

购买 SQUID 磁力计用于表征纳米结构磁性和超导材料

• 批准号: 9422192
• 负责人: Jeffrey Childress
• 金额: --
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-05-01 至 1996-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9422192&HistoricalAwards=false
• 关键词: Acquisition; SQUID; Magnetometer; Characterization; Nanostructured

Abstract 9422192 Childress Partial support is provided to the University of Florida to acquire a SQUID magnetometer for the characterization of thin-film and nanostructured magnetic and superconducting materials. The equipment will have the sensitivity required to detect magnetic signal from ultra-small magnetic structure in an applied magnetic field range of + 5 Tesla. In addition, it will be equipped with the ability to perform AC susceptibility measurements, which are critical to the accurate non-contact characterization of superconducting phases, and useful for the study of relaxation phenomena in nanostructured magnetic materials. Finally, it will be able to perform accurately at very low fields, so that magnetically soft thin layers (useful for magneto-resistive sensor applications) may be accurately characterized. An instrument of this kind is not currently available at the University. An older instrument in the Physics Department is being used continuously and does not include AC measurement or ultra-low fields capabilities. The proposed instrument will be used by a total of six faculty members and 20 graduate/undergraduate students.

摘要 9422192 奇尔德里斯 向佛罗里达大学提供了部分支助，以购置SQUID磁强计，用于表征薄膜和纳米结构磁性和超导材料。该设备将具有在+5特斯拉的外加磁场范围内检测来自超小磁性结构的磁信号所需的灵敏度。此外，它还将具备进行交流磁化率测量的能力，这对超导相的准确非接触表征至关重要，并有助于研究纳米结构磁性材料中的弛豫现象。最后，它将能够在非常低的磁场下精确地执行，从而可以精确地表征磁性软薄层（用于磁阻传感器应用）。大学目前没有这种仪器。物理系的一台较旧的仪器正在继续使用，不包括交流测量或超低场能力。拟议的仪器将被使用的6名教师和20名研究生/本科生。