Insights into the local structure of Tb-doped KY3F10 nanoparticles from Synchrotron X‑ray Diffraction
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2017
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Pure and Tb-doped nanocrystalline KY3F10
specimens were synthesized by coprecipitation, and portions
of the samples underwent further heat treatment at 600 °C in a
fluorinated atmosphere. Synchrotron X-ray diffraction patterns
acquired at 30 keV allowed to determine both long- and shortrange
ordered structures by Rietveld and pair distribution
function (PDF) analyses, respectively. PDF examination of the
as-synthesized sample allowed to discern a slight deviation
from the basic cubic building unit because the Y−F bond lengths could be explained in S.G. I4/mmm with cell parameters a =
8.1520(9) Å and c = 11.5876(29) Å, whereas Rietveld analysis could equally well fit both the cubic and tetragonal descriptions for
the heat-treated specimens. Also, PDF revealed that the as-synthesized sample exhibited less structural coherence than the heattreated
one.
Como referenciar
ICHIKAWA, RODRIGO U.; LINHARES, HORACIO M.S.M.D.; PERAL, INMA; BALDOCHI, SONIA L.; RANIERI, IZILDA M.; TURRILLAS, XAVIER; MARTINEZ, LUIS G. Insights into the local structure of Tb-doped KY3F10 nanoparticles from Synchrotron X‑ray Diffraction. ACS Omega, v. 02, n. 08, p. 5128-5136, 2017. DOI: 10.1021/acsomega.7b00668. Disponível em: http://repositorio.ipen.br/handle/123456789/28515. Acesso em: 19 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.