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

doi:10.1063/1.2195111

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

29 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 language	English
Article number	153117
Journal	Applied Physics Letters
Volume	88
Issue number	15
DOIs	https://doi.org/10.1063/1.2195111
Publication status	Published - 2006 Apr 10
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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

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.",

author = "Lin, {Wen Chin} and Huang, {Po Chun} and Song, {Ker Jar} and Lin, {Minn Tsong}",

note = "Funding Information: This work was supported by the National Science Council of Taiwan under Grant Nos. NSC 94-2112-M-002-005 and NSC 94-2112-M-001-045.",

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AU - Lin, Wen Chin

AU - Huang, Po Chun

AU - Song, Ker Jar

AU - Lin, Minn Tsong

N1 - Funding Information: This work was supported by the National Science Council of Taiwan under Grant Nos. NSC 94-2112-M-002-005 and NSC 94-2112-M-001-045.

PY - 2006/4/10

Y1 - 2006/4/10

N2 - 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.

AB - 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.

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

Abstract

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