Title of article
Powder neutron diffraction of La-apatite under low temperature
Author/Authors
Matsushita، نويسنده , , Yoshitaka and Izumi، نويسنده , , Fujio and Kobayashi، نويسنده , , Kiyoshi and Igawa، نويسنده , , Naoki and Kitazawa، نويسنده , , Hideaki and Oyama، نويسنده , , Yukiko and Miyoshi، نويسنده , , Shogo and Yamaguchi، نويسنده , , Shu، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2009
Pages
3
From page
319
To page
321
Abstract
The neutron powder-diffraction data of the apatite-type La-silicate La9.50Si6O26.25, was measured using JAEA-HRPD diffractometer at 10 K. The Rietveld refinement on the basis of hexagonal P63/m was successfully carried out with anisotropic thermal displacement parameters for all sites. The obtained cell parameters were a=0.971297(7) nm, and c=0.717950(6) nm. On the Rietveld refinement supported by maximum entropy method, the interstitial oxygen positions show randomly distribution around La2 site, and they may give the driving-force of high ionic conductivity to the main ionic conduction site O4.
Keywords
Oxygen-ionic conductor , neutron powder diffraction , Rietveld method , low temperature , Oxyapatite
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Serial Year
2009
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Record number
2210793
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