Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Co dimers observed by extended x-ray absorption fine structure spectroscopy.

G Faraci1, A R Pennisi, A Balerna

  • 1Dipartimento di Fisica--Universitá di Catania, Istituto Nazionale di Fisica della Materia, Corso Italia 57, 95129 Catania, Italy.

Physical Review Letters
|May 1, 2001
PubMed
Summary

Cobalt dimers were dispersed in a silver matrix using ion implantation. Extended X-ray Absorption Fine Structure (EXAFS) revealed contracted dimers in a chainlike configuration within the silver lattice.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Raman amplification for trapped radiation in crystalline single Si nanoparticle.

Scientific reports·2023
Same author

Strong infrared photoluminescence in highly porous layers of large faceted Si crystalline nanoparticles.

Scientific reports·2016
Same author

Thermal dependent anharmonicity effects on gold bulk studied by extended x-ray-absorption fine structure.

Journal of physics. Condensed matter : an Institute of Physics journal·2011
Same author

X-ray absorption spectroscopy studies of the adducts formed between cytotoxic gold compounds and two major serum proteins.

Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry·2010
Same author

Mapping the intake of different elements in vegetal tissues by dual-energy X-ray imaging at DaPhine synchrotron light source.

Microscopy research and technique·2007
Same author

Pinning of size-selected Pd nanoclusters on graphite.

The Journal of chemical physics·2006

Area of Science:

  • Materials Science
  • Solid-State Physics
  • Nanotechnology

Background:

  • Understanding the behavior of dilute magnetic alloys is crucial for developing advanced electronic and magnetic materials.
  • Ion implantation offers a precise method for introducing dopant atoms into host matrices.
  • Extended X-ray Absorption Fine Structure (EXAFS) spectroscopy is a powerful tool for probing local atomic environments.

Purpose of the Study:

  • To investigate the structural characteristics of cobalt (Co) atoms dispersed in a silver (Ag) matrix.
  • To determine the aggregation state and local configuration of cobalt at low concentrations.
  • To utilize EXAFS spectroscopy for atomic-level characterization.

Main Methods:

  • Ion implantation of cobalt into a silver substrate.

Related Experiment Videos

  • Extended X-ray Absorption Fine Structure (EXAFS) spectroscopy analysis of the cobalt-silver system.
  • Analysis of EXAFS data to determine interatomic distances and coordination numbers.

    • Main Results:

    • Evidence of cobalt dimers (pairs of Co atoms) was observed at concentrations ranging from 0.10 to 0.70 atomic percent.
    • These cobalt dimers exhibited a contracted nearest-neighbor distance compared to bulk cobalt.
    • The dimers were found to be arranged in a chainlike configuration, with each dimer oriented at 90 degrees relative to others along the [100] and [010] directions of the silver face-centered cubic (fcc) lattice.

    Conclusions:

    • Dilute cobalt in silver forms distinct dimer structures rather than isolated atoms or larger clusters at low concentrations.
    • The observed contraction and specific chainlike arrangement of dimers provide insights into Co-Co and Co-Ag interactions.
    • This study demonstrates the capability of EXAFS to resolve nanoscale structural ordering in dilute alloys.