Papers

Apr, 2006

Structure and random anisotropy in single-phase Ni nanocrystals

APPLIED PHYSICS LETTERS
  • E Kita
  • ,
  • N Tsukuhara
  • ,
  • H Sato
  • ,
  • K Ota
  • ,
  • H Yangaihara
  • ,
  • H Tanimoto
  • ,
  • N Ikeda

Volume
88
Number
15
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.1063/1.2188597
Publisher
AMER INST PHYSICS

We prepared high-purity oxygen-free and single-phase Ni nanocrystals using the gas condensation and deposition method in order to examine the random anisotropy model (RAM). The grain size of an as-prepared sample was estimated to be 8-10 nm. Thermal annealing increased grain sizes (D) up to 22 nm. Clear D-6 dependence of the coercive force on a grain size smaller than 13 nm was obtained for samples prepared on both plastic and KBr single-crystal substrates. For larger grain sizes, H-c decreased with D-1 and these results clearly conform to the RAM in single-element nanocrystal systems. A local anisotropy constant was estimated from the slope of the D-6 relation and the peak of H-c at D=13 nm. (c) 2006 American Institute of Physics.

Link information
DOI
https://doi.org/10.1063/1.2188597
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000236796400048&DestApp=WOS_CPL
ID information
  • DOI : 10.1063/1.2188597
  • ISSN : 0003-6951
  • Web of Science ID : WOS:000236796400048

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