Self-resonant Coil for Contactless Electrical Conductivity Measurement under Pulsed Ultra-high Magnetic Fields

2014/08/18 by Daisuke Nakamura, Nakamura, Daisuke, M. M. Altarawneh +3
Engineering · #Electrical Contact Performance and Analysis #Electromagnetic Effects on Materials #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Pulsed Power Technology Applications

paper · pdf · doi:10.48550/arxiv.1408.3905

openalex publication_date 2014/08/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In this study, we develop experimental apparatus for contactless electrical conductivity measurements under pulsed high magnetic fields over 100 T using a self-resonant-type high-frequency circuit. The resonant power spectra were numerically analyzed, and the conducted simulations showed that the apparatus is optimal for electrical conductivity measurements of materials with high electrical conductivity. The newly developed instruments were applied to a high-temperature cuprate superconductor La_2-xSr_xCuO₄ to show conductivity changes in magnetic fields up to 102 T with a good signal-to-noise ratio. The upper critical field was determined with high accuracy.

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