Susceptibility of Fe atoms in Cu clusters

Rui Zhang, Tom A. George, Parashu Kharel, Ralph Skomski, D. J. Sellmyer

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

By putting a Kondo system of limited dimension inside an insulating matrix, the Kondo screening cloud is confined by the size of the system. This allows us to distinguish the bulk and nano-particle behaviors of such system. We have investigated the magnetic properties of 0.3 at. Fe-doped Cu clusters with dimensions less than 20 nm embedded in a SiO2 matrix. The magnetic measurements are consistent with the Kondo interaction, and net antiferromagnetic Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions between several Fe atoms in one cluster are estimated to have a very small effect. To understand the low-temperature susceptibility reduction, we compare Brillouin functions with exact quantum-mechanical solutions for interacting spin-1 particles and with the Kondo predictions for confined nanoparticles.

Original languageEnglish (US)
Article number17E148
JournalJournal of Applied Physics
Volume113
Issue number17
DOIs
StatePublished - May 7 2013

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magnetic permeability
matrices
magnetic measurement
atoms
screening
interactions
magnetic properties
nanoparticles
predictions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Zhang, R., George, T. A., Kharel, P., Skomski, R., & Sellmyer, D. J. (2013). Susceptibility of Fe atoms in Cu clusters. Journal of Applied Physics, 113(17), [17E148]. https://doi.org/10.1063/1.4799617

Susceptibility of Fe atoms in Cu clusters. / Zhang, Rui; George, Tom A.; Kharel, Parashu; Skomski, Ralph; Sellmyer, D. J.

In: Journal of Applied Physics, Vol. 113, No. 17, 17E148, 07.05.2013.

Research output: Contribution to journalArticle

Zhang, R, George, TA, Kharel, P, Skomski, R & Sellmyer, DJ 2013, 'Susceptibility of Fe atoms in Cu clusters', Journal of Applied Physics, vol. 113, no. 17, 17E148. https://doi.org/10.1063/1.4799617
Zhang, Rui ; George, Tom A. ; Kharel, Parashu ; Skomski, Ralph ; Sellmyer, D. J. / Susceptibility of Fe atoms in Cu clusters. In: Journal of Applied Physics. 2013 ; Vol. 113, No. 17.
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