skip to main content
US FlagAn official website of the United States government
dot gov icon
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
https lock icon
Secure .gov websites use HTTPS
A lock ( lock ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Explore Research Products in the PAR
It may take a few hours for recently added research products to appear in PAR search results.


  • Home
  • Search Results
  • Page 1 of 1

Search for: All records

Creators/Authors contains: "Asuigui, Dane Romar"

Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher. Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?

Some links on this page may take you to non-federal websites. Their policies may differ from this site.

  1. ; ; ; ; ; (, Chemical Communications)
    Using magnetic circular dichroism (MCD) spectroscopy, we demonstrate giant temperature- and field-dependent conduction-band splittings in colloidal EuS and EuSe nanocrystals. 
    more » « less
    Full Text Available 
  2. ; ; ; ; ; (, Chemistry of Materials)
    null (Ed.)
    Full Text Available 
  3. ; ; ; ; ; ; ; ; ; (, Chemistry – A European Journal)
    Full Text Available 
  4. ; ; ; ; ; ; ; ; ; (, Angewandte Chemie International Edition)
    Abstract In targeting reduced valent lanthanide chalcogenides, we report the first nanoparticle synthesis of the mixed‐valent ferromagnets Eu3S4and EuSm2S4. Using divalent lanthanide halides with bis(trimethylsilyl)sulfide and oleylamine, we prepared nanoparticles of EuS, Eu3S4, EuSm2S4, SmS1.9, and Sm3S4. All nanoparticle phases were identified using powder X‐ray diffraction, transmission electron microscopy was used to confirm morphology and nanoparticle size, and magnetic susceptibility measurements for determining the ordering temperatures and valence. The UV/Vis, Raman and X‐ray photoelectron spectroscopies for each phase were compared. Surprisingly, the phase is influenced by the halide and the reaction temperature, where EuCl2formed EuS while EuI2formed Eu3S4, highlighting the role of kinetics in phase stabilization. Interestingly, at lower temperatures EuI2initially forms EuS, and converts over time to Eu3S4. 
    more » « less