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Type: Artigo de periódico
Title: Observation of ferromagnetism in PdCo alloy nanoparticles encapsulated in carbon nanotubes
Author: Roa, DB
Barcelos, ID
de Siervo, A
Pirota, KR
Lacerda, RG
Magalhaes-Paniago, R
Abstract: Carbon nanotubes terminated by PdCo catalyst nanoparticles were grown by plasma-enhanced chemical vapor deposition. Transmission electron microscopy reveals that these nanoparticles have a droplike shape and are completely encapsulated inside multiwalled nanotubes. Magnetization measurements showed the existence of a permanent magnetization with a small shape anisotropy effect. The magnetization of both cobalt and palladium was confirmed by x-ray magnetic circular dichroism. These results show that nanotubes ended by magnetic PdCo nanoparticles can be grown and could be used in magnetic storage media and electrical spin injection. (C) 2010 American Institute of Physics. [doi:10.1063/1.3454781]
Subject: carbon nanotubes
cobalt alloys
ferromagnetic materials
magnetic anisotropy
magnetic circular dichroism
magnetic particles
palladium alloys
plasma CVD
Country: EUA
Editor: Amer Inst Physics
Rights: aberto
Identifier DOI: 10.1063/1.3454781
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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