使用脉冲磁场的微观法拉第旋转测量系统。

Microscopic Faraday rotation measurement system using pulsed magnetic fields.

作者信息

Egami Shigeki, Watarai Hitoshi

机构信息

Department of Chemistry, Graduate School of Science, Osaka University, Machikaneyama-machi, Toyonaka, Osaka 560-0043, Japan.

出版信息

Rev Sci Instrum. 2009 Sep;80(9):093705. doi: 10.1063/1.3229820.

DOI:10.1063/1.3229820

PMID:19791942

Abstract

Microscopic Faraday rotation measurement system using a pulsed magnetic field has been constructed, which can be applied to micron sized diamagnetic and paramagnetic materials. A pulsed magnetic coil could generate a maximum magnetic flux density of about 12 T. The performance of the microscopic Faraday rotation apparatus was demonstrated by the measurement of the Verdet constant V of a polystyrene particle, after the calibration of the pulsed magnetic flux density using a glass plate as a standard material. Also, the magneto-optical rotation dispersion of some diamagnetic substances have been measured and analyzed with V=alambda(-2)+b. The values of a and b were compared to their magnetic susceptibilities.

摘要

已构建了使用脉冲磁场的微观法拉第旋转测量系统，该系统可应用于微米级的抗磁性和顺磁性材料。一个脉冲磁线圈能够产生约12 T的最大磁通密度。在用玻璃板作为标准材料对脉冲磁通密度进行校准之后，通过测量聚苯乙烯颗粒的费尔德常数V，证明了微观法拉第旋转装置的性能。此外，还使用V = aλ(-2)+b对一些抗磁性物质的磁光旋转色散进行了测量和分析。将a和b的值与其磁化率进行了比较。