Enhanced Curie temperatures in Fe and Co magnetic nanoparticle assembly on single-crystalline Al2O3/NiAl (100) with normal metal capping layer

Wen Chin Lin, Po Chun Huang, Ker Jar Song, Minn Tsong Lin

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The ferromagnetism of Fe nanoparticle assembly on Al2 O3 NiAl (100) is observed above 150 K with the coverage larger than 5 ML (monolayer). Cu capping layer induces an enhancement of the Curie temperature (TC) in both Fe and Co magnetic nanoparticle assembly. The TC of Fe nanoparticle assembly with 2 and 6 ML Cu capping layer is enhanced by ∼20 K and even higher, indicating the critical effects of metallic capping layer in such magnetic nanostructures as nanoparticle assembly. The capping layer effect would be crucial for the ex situ measurements and the nanostorage-related applications.

Original languageEnglish
Article number153117
JournalApplied Physics Letters
Volume88
Issue number15
DOIs
Publication statusPublished - 2006 Apr 10

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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