Nanoporous L10-FePt with high coercivity

Wei Zhang, Dianguo Ma, Yingmin Wang, Kunio Yubuta, Yanhui Li, Parmanand Sharma

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate the synthesis of a novel nanoporous ordered face-centered tetragonal FePt (L10-FePt) compound by selective dissolution of an Fe60Pt10B30 nanocomposite alloy, which consists of nanoscale L10-FePt and Fe2B phases. The Fe2B phase is selectively removed from the alloy by electrochemical etching in H2SO4 aqueous solution, while the preserved L10-FePt phase forms a uniform open bicontinuous interpenetrating ligament–channel structure with a ligament size of ∼15 nm. The nanoporous L10-FePt alloy possesses a high coercivity of 18.5 kOe.

Original languageEnglish
Pages (from-to)5-8
Number of pages4
JournalScripta Materialia
Volume162
DOIs
Publication statusPublished - 2019 Mar 15

Keywords

  • Coercivity
  • Electrochemical etching
  • L1-FePt
  • Nanocomposite magnets
  • Nanoporous metals

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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