Effect of sol-gel modifications on formation and morphology of nanocrystalline lanthanum aluminate
Yükleniyor...
Tarih
2006
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Pergamon-Elsevier Science Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
LaAlO3 powders are prepared by sol-gel method. The effect of preparation conditions on morphological properties and crystal formations are investigated. iso-Propanol/tert-butanol and ethyl acetoacetate/ethylene glycol monomethylether are used solvents and complexing agents, respectively. Samples are dried with conventional and freeze-drying methods and calcined between 600 and 1000 degrees C. TGA, DTA, XRD, SEM and TEM methods are used for characterization. It is observed that freeze-dried sample prepared with tert-butanol has the lowest LaAlO3 formation temperature and uniform rhombohedral crystals. But conventionally dried sample, prepared with iso-propanol has smallest agglomerates at 1000 degrees C and does not show clear crystallization temperature in DTA analysis. The XRD peaks of LaAlO3 crystal are observed at 600 degrees C for all samples prepared by various sol-gel conditions. (C) 2006 Elsevier Ltd. All rights reserved.
Açıklama
Oksuzomer, Faruk/0000-0003-0827-8667; Koc, Serkan Naci/0000-0003-4472-4337
Anahtar Kelimeler
nanostructures, sol-gel chemistry, X-ray diffraction, microstructure
Kaynak
Materials Research Bulletin
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
41
Sayı
12
Künye
closedAccess
