Direct synthesis of isolated l10-FePtCu nanoparticles by RF-magnetron sputtering

Han Wool Ryu, Kazuhisa Sato, Yoshihiko Hirotsu

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Isolated and oriented hard magnetic FePtCu ternary alloy nanoparticles with the L10-type ordered structure have been directly fabricated by rf-magnetron sputtering onto NaCl substrate kept at 613K without any post-deposition annealing. Structure and morphology of those particles were studied by TEM. When the sputtering duration decreases, the particle size decreases and the particle areal number density increases. These nanoparticles have <100> orientation on the NaCl substrate. Alloy composition distribution from particle to particle examined by nano-beam elemental x-ray analysis was found to be quite small, which can be attributed to the homogeneous structure formed by co-deposition of Fe, Pt and Cu by sputtering. Thermal fluctuation of the magnetization becomes prominent in the specimen with the particle size smaller than about 10nm in diameter.

Original languageEnglish
Title of host publicationDesigning of Interfacial Structures in Advanced Materials and their Joints
EditorsMasaaki Naka
PublisherTrans Tech Publications Ltd
Number of pages5
ISBN (Print)9783908451334
Publication statusPublished - 2007
Externally publishedYes
EventInternational Workshop on Designing of Interfacial Structures in Advanced Materials and their Joints, DIS 2006 - Osaka, Japan
Duration: 2006 May 182006 May 20

Publication series

NameSolid State Phenomena
ISSN (Print)1012-0394
ISSN (Electronic)1662-9779


OtherInternational Workshop on Designing of Interfacial Structures in Advanced Materials and their Joints, DIS 2006


  • FePtCu
  • L1 structure
  • Low temperature ordering
  • Sputtering
  • TEM

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics


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