Study for room-temperature centimeter-sized ballistic transport alloys

• Project/Area Number: 23651101
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nanomaterials/Nanobioscience
• Research Institution: 公益財団法人電磁材料研究所 (2012); Tohoku University (2011)
• Principal Investigator: FUKUHARA Mikio 公益財団法人電磁材料研究所, その他部局等, 研究員 (30400401)
• Project Period (FY): 2011 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: バリステック伝導 / アモルファス合金 / 金属クラスター / トンネリング / センチメートルサイズ / センチメートル / アモルファス合金、スペイン / 弾道伝道 / 金属クラスタ、アメリカ

Research Abstract

Ni-Nb-Zr-H glassy alloys with Ni-centered icosahedral Ni_5Zr_5Nb_3 clusters showed centimeter-sized ballistic transport behaviors of 4-fold larger than that of Ag, in low temperature regions up to 223 K, according to increase in degree of amorphousness. Although application of pressure of -8 GPa did not enhance conductivity of the glassy alloys, but changed its sign from negative to positive at 22-25 K. The transport mechanism could be excluded by tunneling of one electron among clusters.

Research Products

• [Journal Article] (2012)
  • Author(s): M. Fukuhara and H. Yoshida
  • Journal Title: J. Non-Cryst Volume: 358 Pages: 959-959
• [Journal Article] (2012)
  • Author(s): M. Fukuhara and Y. Umemori
  • Journal Title: Inst. J. Mol. Sci. Volume: 13 Pages: 180-180
• [Journal Article] (2012)
  • Author(s): M. Fukuhara et al.
  • Journal Title: Appl. Phys. Lett. Volume: 100 Pages: 253114-253114
• [Journal Article] (2012)
  • Author(s): M. Fukuhara
  • Journal Title: J. Alloy Comp. Volume: 536S
• [Journal Article] The Effect of Hydrogen Content on Ballistic Transport Behaviors in the Ni-Nb-Zr-H Glassy Alloys (2012)
  • Author(s): Mikio Fukuhara
  • Journal Title: Int. J. Mol. Sci. Volume: 13 Issue: 1 Pages: 180-186
  • DOI: 10.3390/ijms13010180
  • NAID: 120005458754
  • Peer Reviewed
• [Journal Article] Rotating speed effect on electronic transport behaviors of Ni-Nb-Zr-H glassy alloys (2012)
  • Author(s): Mikio Fukuhara
  • Journal Title: J. Alloy. Comp. Volume: 536S Pages: S83-S85
  • DOI: 10.1016/j.jallcom.2011.11.014
  • Peer Reviewed
• [Journal Article] Presure-induced positive electrical resistivity coefficient in Ni-Nb-Zr-H glassy alloy (2012)
  • Author(s): Mikio Fukuhara
  • Journal Title: Appl. Phys. Lett. Volume: 100 Issue: 25
  • DOI: 10.1063/1.4729574
  • Peer Reviewed
• [Journal Article] The effect of degree of amorpohousness on electronic transport behavior in the Ni-Nb-Zr-H glassy alloys with subnanometre-sized clusters (2012)
  • Author(s): M. Fukuhara and H. Yoshida
  • Journal Title: J. Non-Crystal. Solid. Volume: 358 Issue: 5 Pages: 959-963
  • DOI: 10.1016/j.jnoncrysol.2012.01.028
  • Peer Reviewed
• [Presentation] (2011)
  • Author(s): M. Fukuhara and A. Inoue
  • Organizer: 18^<th> Int. Symp. On Metastable, amorphous and Nanostructured Mater.
  • Place of Presentation: Gihon, Spain
  • Year and Date: 2011-06-28
• [Presentation] Centimetre-Size Ballistic Transport Behaviour of Ni-Nb-Zr-H Glassy alloys (2011)
  • Author(s): M.Fukuhara and A.Inoue
  • Organizer: 18th Int.Symp. on Metastable, Amorphous and Nanostructured Materials(招待講演)
  • Place of Presentation: Gijon, Spain
• [Book] 特異構造金属・無機融合高機能材料開発共同プロジェクト研究成果報告書 (2012)
  • Author(s): 福原幹夫
  • Total Pages: 2
  • Publisher: Ni-Nb-Zr-H系アモルファス合金の電子特性に及ぼすアモルファス度