| Budget Amount *help |
¥14,170,000 (Direct Cost: ¥10,900,000、Indirect Cost: ¥3,270,000)
Fiscal Year 2020: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2019: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2018: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
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| Outline of Final Research Achievements |
A novel spectroscopic method and instrumentation of ESR have been developed focusing on chiral magnetic systems. The measurement system is based on the static longitudinal magnetization detected on a conventional SQUID magnetometer, to which a circularly polarized microwave is introduced with a cylindrical waveguide. The waveguide suitable for the circularly polarized microwave in the V- or Q/Ka-band was designed on the basis of electromagnetic field simulations. With these system, ESR signals from an achiral organic radical were observed at cryogenic temperatures. It has been found from the analysis of the ESR signals that the irradiated microwave was contaminated with linearly polarized wave; the amplitude ratio of left- and right-handed polarized waves were 0.3/0.7 (V-band) and 0.4/0.6 (Q/Ka-band). Possible causes of the elliptic contamination are ascribed to the reflection or the higher-order modes of the polarized microwave and a volume effect inherent in the sample.
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