Magnetic properties of various thick Co-Fe circular dot arrays

Yasushi Endo, Yusuke Niimi, Ryoichi Nakatani, Yoshio Kawamura, Masahiko Yamamoto

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

Abstract

We have studied the magnetic properties of Co-Fe circular dot arrays with various thicknesses and diameters in order to determine the optimum thickness and diameter of these dot arrays with a single-domain state for the transmission of spin information. For the thickness of 10 nm, the magnetic state changes from a multi-domain state to a closure-domain state and further to a single-domain state with decreasing diameter. On the other hand, for the thickness of 30 nm and 50 nm, all magnetic states are in a vortex state, regardless of the diameter. From these results, it is found that the optimum thickness and diameter of Co-Fe circular dots with a single-domain state are, respectively, 10 nm and less than 100 nm.

Original languageEnglish
Title of host publicationAdvances in Nanomaterials and Processing - IUMRS - ICA - 2006 International Conference in Asia
PublisherTrans Tech Publications Ltd
Pages879-882
Number of pages4
EditionPART 1
ISBN (Print)3908451310, 9783908451310
Publication statusPublished - 2007 Jan 1
Externally publishedYes
EventIUMRS International Conference in Asia 2006, IUMRS-ICA 2006 - Jeju, Korea, Republic of
Duration: 2006 Sep 102006 Sep 14

Publication series

NameSolid State Phenomena
NumberPART 1
Volume124-126
ISSN (Print)1012-0394

Other

OtherIUMRS International Conference in Asia 2006, IUMRS-ICA 2006
CountryKorea, Republic of
CityJeju
Period06/9/1006/9/14

Keywords

  • Co-Fe
  • Magnetic domain
  • Magnetism
  • Spin information

ASJC Scopus subject areas

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

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