Development of magnetic flux - voltage transformer for magnetic studies on room-temperature superconductors

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K18606
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 13:Condensed matter physics and related fields
• Research Institution: Kyushu Institute of Technology
• Principal Investigator: Mito Masaki 九州工業大学, 大学院工学研究院, 教授 (60315108)
• Project Period (FY): 2021-07-09 – 2024-03-31
• Keywords: 高圧実験 / 磁気測定 / 超伝導干渉素子 / 磁束電圧変換

Outline of Final Research Achievements

The final goal of our research is to develop the magnetometer system using transformation system from magnetic flux to voltage, based on high-temperature superconducting quantum interference device (SQUID). Thus, first, we have developed the magnetometer using superconducting transformation system from magnetic flux to voltage, based on low-temperature SQUID, and afterward have developed that using normal-conducting transformation system based on low-temperature SQUID. Consequently we have proposed the prototype of a high-temperature SQUID magnetometer. There we have designed the detection coil system made of metallic Cu wire that will be coupled with high-temperature SQUID.

Free Research Field

高圧物性

Academic Significance and Societal Importance of the Research Achievements

液体ヘリウムの供給不足の中、液体窒素を用いた磁気測定システムの構築は、地方大学の物性研究者の多くが待ち望む技術課題である。しかし、そこでは、いかに効率よく磁束を電圧に変換できるかがポイントになる。SQUIDを用いた技術開発はハードルが高い分野であり、誰かが試行錯誤の情況を公にし、次なるステップアップにつなげるための題材を提供することは学術的・社会的に意義がある。