A comparison between neodymium doped alumina samples obtained by Pechini and sol-gel methods using thermo-stimulated luminescence and SEM
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
18/10/2012
18/10/2012
2010
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Resumo |
Neodymium doped and undoped aluminum oxide samples were obtained using two different techniques: Pechini and sol-gel. Fine grained powders were produced using both procedures, which were analyzed using Scanning Electron Microscopy (SEM) and Thermo-Stimulated Luminescence (TSL). Results showed that neodymium ions incorporation is responsible for the creation of two new TSL peaks (125 and 265 degrees C) and, also, for the enhancement of the intrinsic TSL peak at 190 degrees C. An explanation was proposed for these observations. SEM gave the dimensions of the clusters produced by each method, showing that those obtained by Pechini are smaller than the ones produced by sol-gel; it can also explain the higher emission supplied by the first one. (C) 2010 Elsevier B.V. All rights reserved. |
Identificador |
JOURNAL OF NON-CRYSTALLINE SOLIDS, v.356, n.52-54, Special Issue, p.2956-2959, 2010 0022-3093 http://producao.usp.br/handle/BDPI/17932 10.1016/j.jnoncrysol.2010.03.047 |
Idioma(s) |
eng |
Publicador |
ELSEVIER SCIENCE BV |
Relação |
Journal of Non-crystalline Solids |
Direitos |
restrictedAccess Copyright ELSEVIER SCIENCE BV |
Palavras-Chave | #Thermo-stimulated luminescence #Ionizing radiation #Pechini #Sol-gel #OPTICALLY STIMULATED LUMINESCENCE #ALPHA-AL2O3-C #CRYSTALS #Materials Science, Ceramics #Materials Science, Multidisciplinary |
Tipo |
article proceedings paper publishedVersion |