X-RAY RUNS: Apply for Beamtime
2017 Nov 1 - Dec 21
2018 Feb 7 - Apr 3
2018 Proposal/BTR deadline: 12/1/17
2018 Apr 11 - Jun 4
2018 Proposal/BTR deadline: 2/1/18
Araceli Gutiérrez-Llorente, a visiting scientist from
Universidad Rey Juan Carlos in Madrid, Spain, and a team of researchers
from the energy materials center at Cornell (emc2) and CHESS, have produced
the first-ever epitaxial Bi2Pt2O7
thin-films. These bismuth platinum pyrochlore films have potential
for use in fuel cells, where they could act as more effective cathode
materials. Using pulsed laser deposition (PLD) at the G3 beamline of
CHESS to co-deposit epitaxial δ-Bi2O3
and disordered platinum, the team was able to produce epitaxial Bi2Pt2O7
crystals approximately 100 nanometers in length by annealing the PLD
deposited films in air. The pyrochlore thin-films were studied using
a combination of synchrotron based x-ray diffraction, x-ray absorption,
and x-ray fluorescence. The structure and morphology of the films was
visualized with scanning transmission electron microscopy. This work
was recently published in APL Materials
(http://dx.doi.org/10.1063/1.4908103),
and highlighted by the American Institute of Physics:
http://www.aip.org/publishing/journal-highlights/researchers-synthesize-new-thin-film-material-use-fuel-cells.
Submitted by: Matthew Ward, CHESS, Cornell University
03/11/2015