Multi-frequency electron spin resonance apparatus using a high-power light source compact gyrotron

Authors

  • Yuya Ishikawa Research Center for Development of Far-Infrared Region, University of Fukui

Abstract

We constructed a new multifrequency electron spin resonance (ESR) system by combining a compact-type gyrotron named FU CW CIA and a force-detection ESR measurement system with a variable temperature cryostat which can be used in the temperature range 5−300 K. Multi-frequency ESR signals of 1,1-diphenyl-2-picrylhydrazyl (DPPH) were successfully detected at 300 K. The sensitivity was obtained to be in the order of 1012 spins/G from the ESR measurement of Cu(C4H4N2)(NO3)2. These results indicate that the combination of a high-power wave-source gyrotron with multi-frequency oscillation and a force-detection system is well-matched to enable multi-frequency ESR measurements.

Author Biography

  • Yuya Ishikawa, Research Center for Development of Far-Infrared Region, University of Fukui

    Yuya Ishikawa is an Associate Professor at the Research Center for Development of Far-Infrared Region in the University of Fukui. He graduated from the Department of Applied Physics, Faculty of Engineering, University of Fukui in 2010 with a bachelor's degree and received a master's degree from the Graduate School in 2012. From 2012 to 2015, he worked for Daikin Industries, Ltd., an air conditioner manufacturer, designing room air conditioners. After resigning for personal reasons, he entered the doctoral program of the Graduate School of Engineering at the University of Fukui in 2015 and received his Ph.D. (Engineering) degree in 2018. He specializes in ultra-low temperature properties and low-dimensional magnetism, and received the Young Scientist Incentive Award from the Japan Society of Infrared Science and Technology in 2019 and the Society of Electron Spin Science and Technology (SEST) of Japan in 2022.

SPP2023 Proceedings Cover

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Published

2023-07-01

Issue

2023: Proceedings of the 41st Samahang Pisika ng Pilipinas Physics Conference

Section

Invited Presentations

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How to Cite

[1]
“Multi-frequency electron spin resonance apparatus using a high-power light source compact gyrotron”, Proc. SPP, vol. 41, no. 1, p. SPP-2023-INV-3B-02, Jul. 2023, Accessed: Mar. 25, 2026. [Online]. Available: https://proceedings.spp-online.org/article/view/SPP-2023-INV-3B-02