Preparation of ferroelectric CaBi(4)Ti(4)O(15) powders from novel hydroxide precursors

TitlePreparation of ferroelectric CaBi(4)Ti(4)O(15) powders from novel hydroxide precursors
Publication TypeJournal Article
Year of Publication2008
AuthorsDeshmukh, RG, Vaishampayan, MV, Darshane, SL, Mulla, IS, Gaikwad, AB, N. Rao, K, Ravi, V
JournalMaterials Letters
Volume62
Issue12-13
Pagination1751-1753
Date PublishedAPR
ISSN0167-577X
KeywordsCaBi(4)Ti(4)O(15), Ceramics, Chemical synthesis, Electron microscopy, Oxides, X-ray methods
Abstract

Ferroelectric CaBi(4)Ti(4)O(15) (CBT) powders were prepared for the first time from their respective hydroxides. Commercially purchased Ca(OH)(2) is mixed thoroughly with freshly prepared Bi(OH)(3) and Ti(OH)(4) in stoichiometrie ratio and heated at different temperatures ranging from 100 to 600 degrees C. The CBT phase found to be formed at 500 degrees C by the X-ray diffraction studies. This is the lowest temperature so far reported in the literature for the formation of CBT phase. The advantage of this method is that it also avoids the formation of calcium carbonate phase during synthesis. The phase contents and lattice parameters were studied by the powder X-ray diffraction (XRD) method. The average particle size and morphology were studied by scanning electron microscopy (SEM) technique. (c) 2007 Elsevier B.V All rights reserved.

DOI10.1016/j.matlet.2007.09.080
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)2.117
Divison category: 
Catalysis and Inorganic Chemistry
Center for Material Characterization (CMC)
Physical and Materials Chemistry