Plasma ion heating produces L10 FePt nanoclusters

Marlann Marinho Patterson, Xiangxin Rui, Xingzhong Li, Jeff E. Shield, David Sellmyer

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

1 Scopus citations

Abstract

In this study, cubic and spherical FePt clusters were created by inert gas condensation in an argon-helium dc sputter discharge under different flow and target power conditions. The plasma recipes for spherical and cubic clusters called for high He:Ar ratio, low target power and low He:Ar ratio, high target power, respectively. As expected, Langmuir probe measurements show the recipes led to larger ion density for the cubic case (2 × 108 cm" versus 6 × 106 cm-3 for spherical). We conclude that the larger density of argon ions increased the cluster-ion collision probability, heating the clusters in situ to promote atomic rearrangements and the formation of the ordered L10 crystal structure rather than the disordered fcc structure.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium Proceedings - Crystal-Shape Control and Shape-Dependent Properties-Methods, Mechanism, Theory and Simulation
Pages66-71
Number of pages6
Publication statusPublished - Dec 1 2008
EventCrystal-Shape Control and Shape-Dependent Properties-Methods, Mechanism, Theory and Simulation - San Francisco, CA, United States
Duration: Mar 24 2008Mar 28 2008

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1087
ISSN (Print)0272-9172

Conference

ConferenceCrystal-Shape Control and Shape-Dependent Properties-Methods, Mechanism, Theory and Simulation
CountryUnited States
CitySan Francisco, CA
Period3/24/083/28/08

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ASJC Scopus subject areas

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

Cite this

Patterson, M. M., Rui, X., Li, X., Shield, J. E., & Sellmyer, D. (2008). Plasma ion heating produces L10 FePt nanoclusters. In Materials Research Society Symposium Proceedings - Crystal-Shape Control and Shape-Dependent Properties-Methods, Mechanism, Theory and Simulation (pp. 66-71). (Materials Research Society Symposium Proceedings; Vol. 1087).