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Development of a novel magnetostractive material using the exchange softening effect by magnetostriction

Research Project

Project/Area Number 23760287
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Electronic materials/Electric materials
Research InstitutionNagasaki University

Principal Investigator

YANAI Takeshi  長崎大学, 大学院・工学研究科, 助教 (30404239)

Project Period (FY) 2011 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords磁歪 / 電析 / ナノ結晶 / 軟磁性 / 急冷薄帯 / めっき
Research Abstract

Although Fe-Ga ribbons with some additives were investigated for refining the grain size, the research target was shifted from the ribbons to the Fe-Ga films since some unrequired crystalline phases were observed in the annealed ribbons. Electrodeposited Fe-Ga films are rarely reported since gallium is very difficult to electrodeposit from aqueous solutions. In this study, we investigated magnetic and structural properties of the Fe-Ga film prepared from a new plating bath without toxic substances specified by an Ordinance of the Ministry of the Environment in Japan. Consequently, thick Fe-Ga films with the suitable Ga content range from 10 to 35 at.% were obtained. Refinement of grain size in the electrodeposited films by additives is one of our future works. In order to clarify the relationship between microstructure and magnetic property in an Fe-Ga alloy, grain size dependence of coercivity was simulated. Consequently, it is found that the coercivity of the Fe-Ga alloy decreases slightly with decreasing the grain size whereas the coercivity of Terfenol-D decreases drastically.

Report

(3 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Research-status Report
  • Research Products

    (5 results)

All 2013 2012 2011

All Presentation (5 results)

  • [Presentation] Electrodeposited Fe-Ga films2013

    • Author(s)
      T. Yanai, T. Kawaguchi, T. Shimokawa, Y. Watanabe, M. Nakano, K. Suzuki, H. Fukunaga
    • Organizer
      ISAMMA 2013(The 3rd International Symposium on Advanced Magnetic Materials and Applications)
    • Year and Date
      2013-07-22
    • Related Report
      2012 Final Research Report
  • [Presentation] Electrodeposited Fe-Ga films2013

    • Author(s)
      Tekeshi Yanai
    • Organizer
      ISAMMA 2013(The 3rd International Symposium on Advanced Magnetic Materials and Applications)
    • Place of Presentation
      Taichung, Taiwan
    • Related Report
      2012 Annual Research Report
  • [Presentation] Electrodeposited Fe-Ga films prepared from citric acid based bath2012

    • Author(s)
      T. Yanai, T. Kawaguchi, M. Nakano, K. Suzuki, H. Fukunaga
    • Organizer
      ICAUMS2012(International Conference of the Asian Union of Magnetics Societies)
    • Year and Date
      2012-10-04
    • Related Report
      2012 Final Research Report
  • [Presentation] Electrodeposited Fe-Ga films prepared from citric acid based bath2012

    • Author(s)
      Tekeshi Yanai
    • Organizer
      ICAUMS2012(International Conference of the Asian Union of Magnetics Societies)
    • Place of Presentation
      Nara, Japan
    • Related Report
      2012 Annual Research Report
  • [Presentation] 電析法により作製した磁歪膜に関する検討2011

    • Author(s)
      川口泰平
    • Organizer
      平成23年度(第64回) 電気関係学会九州支部連合大会
    • Place of Presentation
      佐賀大学
    • Related Report
      2011 Research-status Report

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Published: 2011-08-05   Modified: 2019-07-29  

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