High magnetic response of carbon nanotube composite with magnetic ionic liquid

2015 Fiscal Year Final Research Report

• Project/Area Number: 26870240
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Composite materials/Surface and interface engineering; Physical chemistry
• Research Institution: Shinshu University
• Principal Investigator: FUTAMURA Ryusuke 信州大学, 先鋭領域融合研究群環境・エネルギー材料科学研究所, 研究員 (90647223)
• Research Collaborator: IIYAMA Taku 信州大学, 学術研究院理学系, 准教授 (30313828)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 磁性イオン液体 / 磁化率測定 / 常磁性‐反強磁性転位 / X線散乱測定 / リバースモンテカルロシミュレーション / カーボンナノチューブ / ナノカーボンマテリアル / イオン液体

Outline of Final Research Achievements

We produced nanocarbon (i.e. carbon nanotube and activated carbon fibers) composites with magnetic ionic liquid of 1-ethyl-3-methylimidazolium tetrachloroferrate. The composites show magnetic response even for magnetic fields of a neodymium magnet. The temperature dependence of magnetic susceptibility of the composites are different from that of the bulk ionic liquid: magnetic phase transition from paramagnetism to antiferromagnetism does not observed at 3.8 K. We applied hybrid reverse Monte Carlo (HRMC) simulation to confined magnetic ionic liquid system for the detailed structural analysis.　Anomalous accumulation of tetrachloroferrate anion into the nearest coordination shell surrounding anion in carbon nanopore was observed, implying the unique magnetic behaviors.

Free Research Field

コロイド科学