Structure, composition and enhanced magnetic properties of novel ternary multicore-shell Ni–Co–Cr nanoclusters prepared by one-step inert gas condensation method

Saja Al Khabouri, Salim Al Harthi*, Toru Maekawa, Mohamed E. Elzain, Htet Htet Kyaw, Myo Tay Zar Myint, Karthik Laxman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We have synthesized ternary Ni–Co–Cr nanoclusters using one step method by simultaneous sputtering of metallic targets through inert gas condensation (IGC) deposition process. The difference in surface energy between the component atoms creates a preferential surface phase leading to the formation of multi core/shell structures. Surface structure and composition analysis reveal metallic and oxide phases characterized by extraordinary 1.43 μm periodicity strong magnetic stripe domains with weak magnetic force microscopy signal attenuation up to a lift height value of 2.5 μm. In addition, the ternary nanoclusters exhibit strong ferromagnetic behavior below the blocking temperature of 139 K with coercivity of 700 Oe at 4 K. The enhanced magnetic properties are attributed to Volmer-Weber growth mechanism and pave a facile way for preparing ternary core/shell magnetic structures needed for applications which require strong magnetic anisotropy along their growth direction.

Original languageEnglish
Article number124858
JournalMaterials Chemistry and Physics
Volume271
DOIs
Publication statusPublished - Oct 1 2021
Externally publishedYes

Keywords

  • Core/shell
  • Ferromagnetic
  • Inert gas condensation
  • Magnetic
  • Nanoclusters

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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