Verification for boosting performance of electro-magnetostrictive multiferroic device to practical stage

2016 Fiscal Year Final Research Report

• Project/Area Number: 26870030
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Composite materials/Surface and interface engineering; Physical properties of metals/Metal-base materials
• Research Institution: Hirosaki University
• Principal Investigator: Kubota Takeshi 弘前大学, 北日本新エネルギー研究所, 准教授 (70400405)
• Research Collaborator: FURUYA Yasubumi ; YUBUTA Kunio ; KIMURA Natsuko ; FUKUOKA Shuta ; IJLAL Hasif
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: マルチフェロイック素子 / 磁歪 / アモルファス合金 / 発電

Outline of Final Research Achievements

Enhancement of the magnetostriction and thickening for the magnetostrictive layer and structural optimization as a stacked device have been investigated with a purpose of the boosting generation output of the electro-magnetostrictive multferrioc device as passive-typed electromagnetic field sensor / magnetic field energy-harvester operating.
An Fe-Si-B-P amorphous alloy with a combination of good permeability, relatively high magnetostriction and high grass-forming ability was adopted for magnetostrictive layer. As the results, the critical thickness of the long melt-spun ribbon with single amorphous phase was reached 170 um, and generation output of the device improved with increase the thickness of the ribbon i.e. magnetostrictive layer was confirmed. Additionally leveraging in-plane magnetostriction increase of the annealed ribbon in consequence of partially crystallization only near the surface of the ribbon, enhancement of the output generation of the device has been confirmed.

Free Research Field

非平衡相軟磁性材料の創製とそれを用いた電磁デバイスの開発