Size dependent enhancement of spin and orbital magnetism in CoRh nanoparticles

M. Muñoz-Navia, J. Dorantes-Dávila, C. Amiens, B. Chaudret, D. Zitoun, M. J. Casanove, P. Lecante, N. Jaouen, A. Rogalev, M. Respaud, G. M. Pastor

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The magnetism of CoRh nanoparticles (NPs) is investigated experimentally and theoretically. NPs of about 2 nm diameter have been synthesized by decomposition of organometallic precursors in mild conditions of pressure and temperature, under hydrogen atmosphere and in the presence of a polymer matrix. The magnetic properties are determined by SQUID and X-ray magnetic circular dichroism. All the studied CoRh clusters are magnetic with an average spin moment per atom that is significantly larger than the one of macroscopic crystals or alloys with similar concentrations. The experimental results and the comparison with theory suggest that the most likely chemical arrangement is a Rh core with a Co-rich outer shell and some degree of intermixing at the CoRh interface. A detailed analysis of the theoretical results from a local perspective shows that the spin and orbital moments of the Co and Rh atoms at the interface are largely responsible for the enhancement of the magnetization.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium Proceedings - Nanoscale Magnetics and Device Applications
PublisherMaterials Research Society
Number of pages6
ISBN (Print)9781605604312
StatePublished - 2007
Externally publishedYes
EventNanoscale Magnetics and Device Applications - 2007 MRS Spring Meeting - San Francisco, CA, United States
Duration: 9 Apr 200713 Apr 2007

Publication series

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


ConferenceNanoscale Magnetics and Device Applications - 2007 MRS Spring Meeting
Country/TerritoryUnited States
CitySan Francisco, CA


Dive into the research topics of 'Size dependent enhancement of spin and orbital magnetism in CoRh nanoparticles'. Together they form a unique fingerprint.

Cite this