Development of Very-Low-Temperature Millimeter-Wave Electron-Spin-Resonance Measurement System
| Autor: | S. Miura, Takao Mizusaki, Yutaka Fujii, K. Ohya, H. Yamamori, K. Morimoto, Akira Fukuda, Akira Matsubara, Y. Ishikawa, T. Komori, Seitaro Mitsudo, Yoshikazu Koizumi, T. Omija, H. Kikuchi |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
business.industry System of measurement 01 natural sciences Signal Atomic and Molecular Physics and Optics 010305 fluids & plasmas Crystal Resonator Homodyne detection 0103 physical sciences Extremely high frequency Optoelectronics Dilution refrigerator Thin film 010306 general physics business |
| Zdroj: | Applied Magnetic Resonance. 49:783-801 |
| ISSN: | 1613-7507 0937-9347 |
| Popis: | We report the development of a millimeter-wave electron-spin-resonance (ESR) measurement system at the University of Fukui using a 3He/4He dilution refrigerator to reach temperatures below 1 K. The system operates in the frequency range of 125–130 GHz, with a homodyne detection. A nuclear-magnetic-resonance (NMR) measurement system was also developed in this system as the extension for millimeter-wave ESR/NMR double magnetic-resonance (DoMR) experiments. Several types of Fabry–Perot-type resonators (FPR) have been developed: A piezo actuator attached to an FPR enables an electric tuning of cavity frequency. A flat mirror of an FPR has been fabricated using a gold thin film aiming for DoMR. ESR signal was measured down to 0.09 K. Results of ESR measurements of an organic radical crystal and phosphorous-doped silicon are presented. The NMR signal from 1H contained in the resonator is also detected successfully as a test for DoMR. |
| Databáze: | OpenAIRE |
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