Magnetization switching dynamics in single nanodot of epitaxial Co/Pt multilayer

B. Lao, Satoshi Okamoto, Nobuaki Kikuchi, Osamu Kitakami

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

Abstract

Nanostructured magnetic dots have been of great interest because of their technological importance in future high-density data storage devices. Deep understanding on the magnetization reversal process of nanoscale magnet is essentially important for such device operation, thus numerous studies have been reported so far for various materials with perpendicular magnetic anisotropy, such as Co/ (Pt and Pd) multilayers and CoPt alloys [1-3]. Through a large number of these efforts, it has been widely accepted that a nucleation of a reversed domain with a dimension of domain wall width initiates the magnetization reversal of the dot. However there are still many issues remained unclear. For example, where the nucleation site is, how the physical mechanism of nucleation is, and so on. Since the previously used polycrystalline dot array samples always contain structural and magnetic non-uniformity due to grain boundary and their distributions among the dots, a study using a single dot with epitaxial structure is essential to clarify these questions. In this study, we investigate the magnetization switching behavior by using single nanodots of epitaxially grown Co/Pt multilayer.

Original languageEnglish
Title of host publication2015 IEEE International Magnetics Conference, INTERMAG 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479973224
DOIs
Publication statusPublished - 2015 Jul 14
Event2015 IEEE International Magnetics Conference, INTERMAG 2015 - Beijing, China
Duration: 2015 May 112015 May 15

Other

Other2015 IEEE International Magnetics Conference, INTERMAG 2015
CountryChina
CityBeijing
Period15/5/1115/5/15

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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