Fabrication of core-shell type FeCo-Au (Ag) high moment magnetic nanoparticles

Jianmin Bai, Yunhao Xu, Jian Ping Wang

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


We developed a physical vacuum deposition technique combining an on-line sputtering/evaporation process with an integrated nanocluster deposition process to prepare core-shell type nanoparticles, High magnetic moment (Fe 60Co40)CoreAuShell and (Fe 60Co40)CoreAgShell superparamagnetic nanoparticles with controllable particle size of 10 - 20 nm and Au/Ag shell thickness of 1 - 3 nm were prepared successfully by using this method. Au shell is not only functional for the potential biocompatibility but also the key to prevent the oxidation of FeCo nanoparticles. Saturation magnetization of (Fe60Co40)CoreAuShell nanoparticles was found three times higher than that of iron oxide nanoparticles. This novel technique enables us to control independently the dimensions of core and shell and select individually materials for core and shell for any other core-shell type nanoparticles.

Original languageEnglish (US)
Title of host publicationMagnetic Nanoparticles and Nanowires
PublisherMaterials Research Society
Number of pages6
ISBN (Print)1558998314, 9781558998315
StatePublished - 2005
Event2005 MRS Spring Meeting - San Franciso, CA, United States
Duration: Mar 28 2005Apr 1 2005

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Other2005 MRS Spring Meeting
Country/TerritoryUnited States
CitySan Franciso, CA


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