Fabrication of L 10-type FeCo ordered structure using a periodic Ni buffer layer

Hisaaki Ito, Masahiro Saito, Toshio Miyamachi, Fumio Komori, Tomoyuki Koganezawa, Masaki Mizuguchi, Masato Kotsugi

Research output: Contribution to journalArticlepeer-review

Abstract

We experimentally prepared a ferromagnet with an L10-FeCo ordered structure by inserting a periodic buffer layer to suppress the B2 structural transition and to maintain the L10 structure. The sample was fabricated by utilizing a technique involving the deposition of alternating monoatomic layers using pulsed laser deposition (PLD). This technique was used to deposit a thin film of (7 ML-FeCo/3 ML-buffer)3, in which either Cu or Ni was utilized as buffer layer. We characterized the surface roughness, surface morphology, lattice structure, and magnetic properties of the specimens by RHEED, AFM, SR-XRD, and SQUID, respectively. As a result, we successfully confirmed the construction of the L10-FeCo superstructure with a periodic Ni buffer layer for the first time. Both the magnetic moment and magnetic anisotropy were also increased by replacing Cu with Ni.

Original languageEnglish
Article number045307
JournalAIP Advances
Volume9
Issue number4
DOIs
Publication statusPublished - 2019 Apr 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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