Magnéli Ti4O7 thin film produced by stepwise oxidation of titanium metal foil

Mitsuhiro Matsuda, Yuta Yamada, Yuta Himeno, Kenji Shida, Masatoshi Mitsuhara, Motohide Matsuda

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


A 3-μm-thick film of Magnéli Ti4O7 was successfully fabricated on the surface of Ti metal foil by a stepwise oxidation process involving annealing at 973 K in air followed by heating to 1173 K under a low oxygen partial pressure. Transmission electron microscopy and high-angle annular dark-field scanning transmission electron microscopy showed that the Magnéli Ti4O7 phase consisted of a period of four layers of equiaxial grains several hundreds of nanometers in size. The black Magnéli Ti4O7 thin film formed by our process absorbed light in the visible and near-infrared regions.

Original languageEnglish
Article number113829
JournalScripta Materialia
Publication statusPublished - Jun 2021

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys


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