Creation of nanowhisker growth technology for improvement of energy material performance by quantum effect

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K22154
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 31:Nuclear engineering, earth resources engineering, energy engineering, and related fields
• Research Institution: Aichi Institute of Technology (2020-2021); Nagoya University (2019)
• Principal Investigator: Ichino Yusuke 愛知工業大学, 工学部, 教授 (90377812)
• Project Period (FY): 2019-06-28 – 2022-03-31
• Keywords: 超伝導 / ナノウィスカー / 液相成長 / VLS成長 / 高品質薄膜

Outline of Final Research Achievements

Energy materials such as superconductors and thermoelectric materials contribute greatly to highly efficient transport, storage and generation of energy in a sustainable society. In this project, we aim to dramatically improve the performance of energy materials by quantum effects, and to create a technology to grow nano-whisker crystals of energy materials by using the vapor phase thin film crystal growth technology we have developed. Nano-whiskers made of YBa2Cu3Oy (YBCO) superconductor could not be obtained by using liquid phase materials such as Au and Ba-Cu-O-Ag. However, high quality YBCO films could be obtained due to the effect of growth through the liquid phase.

Free Research Field

機能性酸化物工学

Academic Significance and Societal Importance of the Research Achievements

本課題の当初の目的であったエネルギー材料のナノウィスカーを作製することはできなかった。しかしながら、YBCO超伝導体の高品質な単結晶薄膜を得ることはできた。なおかつ、液相組成の最適化によって従来の気相法よりも高品質に、かつ高速にYBCO膜を得ることができた。これによって、YBCO超伝導線材を高性能かつ高速に量産できる技術の礎となる。