Iron nitride with the rock-salt structure produced by pulsed laser deposition

• Project/Area Number: 25410075
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Inorganic chemistry
• Research Institution: Tokyo University of Science
• Principal Investigator: Yamada Yasuhiro 東京理科大学, 理学部, 教授 (20251407)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2013: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
• Keywords: 窒化鉄 / 薄膜 / レーザー蒸着 / メスバウアー分光法 / 磁性 / ネール点 / 格子欠陥 / 岩塩型窒化鉄

Outline of Final Research Achievements

A single-phase γ’’’-FeN film with the rock-salt structure was produced by pulsed laser deposition of Fe onto an Al substrate in a nitrogen atmosphere. Its Mössbauer spectra and powder X-ray diffraction patterns were measured.γ’’’-FeN was found to be antiferromagnetic exhibiting a hyperfine magnetic field of 30 T at a temperature of 5 K. It was found to have a Néel temperature of 220 K. A minor component with a higher hyperfine magnetic field of 49 T at 5 K was also observed. It is thought to originate from defects in γ’’’-FeN.
We modified the instruments and the production was performed at 773 K. We have successively produced γ’’’-FeN without defects. The Mössbauer spectra of the sample were measured varying the temperatures, and the Neel point was found to be 230 K.
This is the first study which produced neat γ’’’-FeN without inclusion of γ’’-FeN.

Research Products

• [Journal Article] Mossbauer study of iron fluoride films produced by pulsed laser deposition (2015)
  • Author(s): K. Shiga, Y. Yamada, Y. Kobayash
  • Journal Title: J. Radioanal. Nucl. Chem. Volume: 303 Issue: 2 Pages: 1477-1480
  • DOI: 10.1007/s10967-014-3523-1
  • Peer Reviewed
• [Journal Article] Mossbauer study of gamma'''-iron nitride film (2013)
  • Author(s): Y. Yamada, R. Usui, Y. Kobayashi
  • Journal Title: Hyperfine Interactions Volume: 219 Issue: 1-3 Pages: 13-17
  • DOI: 10.1007/s10751-012-0664-x
  • Peer Reviewed
• [Presentation] Formation of rock-salt structured iron nitride thin films using pulsed laser deposition (2015)
  • Author(s): M. Sato, Y. Yamada, and Y. Kobayashi
  • Organizer: THE INTERNATIONAL CHEMICAL CONGRESS OF PACIFIC BASIN SOCIETIES 2015
  • Place of Presentation: Honolulu, Hawaii, USA
  • Year and Date: 2015-12-16
  • Int'l Joint Research
• [Presentation] レーザー蒸発による岩塩型窒化鉄薄膜の生成 (2015)
  • Author(s): 佐藤美穂・山田康洋・小林義男
  • Organizer: 日本化学会第９５春季年会
  • Place of Presentation: 日本大学船橋キャンパス
  • Year and Date: 2015-03-26
• [Presentation] 窒素雰囲気下の鉄レーザー蒸着で生成する岩塩型窒化鉄薄膜 (2014)
  • Author(s): 佐藤美穂・山田康洋・小林義男
  • Organizer: 第５１回アイソトープ・放射線研究発表会
  • Place of Presentation: 東京大学農学部
  • Year and Date: 2014-07-09
• [Presentation] 窒素雰囲気下の鉄レーザー蒸着で生成する岩塩型窒化鉄薄膜 (2014)
  • Author(s): 佐藤美穂、山田康洋、小林義男
  • Organizer: 第51回アイソトープ放射線研究発表会
  • Place of Presentation: 東京大学農学部