Effect of magnesium on structure and properties of LiNbO3 prepared from polymeric precursors
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
01/01/2002
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Resumo |
The effect of magnesium addition on the phase formation and electric properties of LiNbO3 powder prepared from polymeric precursor was analyzed. It was shown that the unit-cell volume of the rhombohedral phase decreased with increasing magnesium concentration. Small amounts of secondary phases were observed in LiNbO3 powder doped with 5 and 10 mol% Mg+2. These results indicated that the Mg+2 ion was substituted for niobium ion in the rhombohedral phase. The addition of Mg+2 promotes densification of LiNbO3 ceramics. It was noticed that the increase in additive concentration leads to a decrease of electric properties, K-p and d(33). This is due to formation of LiNb3O8 and MgNb2O6 phases at the grain boundaries. (C) 2002 Elsevier B.V. Ltd and Techna S.r.l. All rights reserved. |
Formato |
265-270 |
Identificador |
http://dx.doi.org/10.1016/S0272-8842(01)00089-X Ceramics International. Oxford: Elsevier B.V., v. 28, n. 3, p. 265-270, 2002. 0272-8842 http://hdl.handle.net/11449/25394 10.1016/S0272-8842(01)00089-X WOS:000175311600006 |
Idioma(s) |
eng |
Publicador |
Elsevier B.V. |
Relação |
Ceramics International |
Direitos |
closedAccess |
Palavras-Chave | #calcination #organic precursors #X-ray methods #electrical properties #niobates |
Tipo |
info:eu-repo/semantics/article |